山西省太原师范学院附属中学2019-2020学年高一下学期第一次(线上4月)月考数学试题含解析
山西省太原市师范学院附属中学2019-2020学年高一生物月考试题含解析
山西省太原市师范学院附属中学2019-2020学年高一生物月考试题含解析一、选择题(本题共40小题,每小题1.5分。
在每小题给出的四个选项中,只有一项是符合题目要求的。
)1. 下图A、B、C、D分别表示某哺乳动物细胞(2n)进行减数分裂的不同时期,其中a表示细胞数目。
请判断b、c、d依次代表( )A. DNA分子数、染色体数、染色单体数B. 染色体数、DNA分子数、染色单体数C. DNA分子数、染色单体数、染色体数D. 染色单体数、染色体数、DNA分子数参考答案:A染色体没有复制,染色体与DNA之比为1:1,无染色单体A,染色体复制后,染色体:染色单体:DNA=1:2:2B,C表示减数第二次分裂,D为生殖细胞中染色体:DNA=1:1,无染色单体。
由此得出b为DNA分子,c为染色体数,d为染色单体数。
所以A选项正确。
2. 脂质能够优先通过细胞膜进入细胞的原因是A.细胞膜以磷脂分子为基本支架B.细胞膜上有搬运脂质的载体蛋白质C.细胞膜外表面有糖蛋白D.磷脂分子和蛋白质分子大都可以运动 ""参考答案:A略3. 洋葱根尖细胞的遗传物质存在于()A.细胞核、线粒体、核糖体B.细胞核、线粒体C.细胞核、线粒体、叶绿体D.细胞核、叶绿体参考答案:B4. 在黑色鼠中曾发现一种黄色突变型(常染色体遗传),但从未获得黄色鼠的纯合子,因为基因型为AA的纯合子在母体内胚胎期就死亡。
现用黄色的雌雄鼠交配,后代黑色鼠∶黄色鼠的比例为()A.3∶1B.2∶1C.1∶1D.1∶2参考答案:D5. 下列试管中,能产生大量气泡的是A. B. C. D.参考答案:B酶具有专一性、高效性和需要适应的条件等特点。
【考点定位】酶6. 减数第二次分裂的主要特点是A.同源染色体联会B.染色体复制C.同源染色体分离D.着丝点分裂参考答案:D7. 某细菌能产生一种“毒性肽”,其分子式是C55H70O19N10,将它彻底水解后只能得到下列四种氨基酸:甘氨酸(C2H5NO2)、丙氨酸(C3H7NO2)、苯丙氨酸(C9H11NO2)、谷氨酸(C5H9NO4).则此“毒性肽”中含肽键和谷氨酸的个数分别为()A.19和5 B.10和4 C.9和3 D.9和4参考答案:D【考点】16:蛋白质的合成——氨基酸脱水缩合.【分析】1、构成蛋白质的基本单位是氨基酸,其结构通式是,即每种氨基酸分子至少都含有一个氨基和一个羧基,且都有一个氨基和一个羧基连接在同一个碳原子上,这个碳原子还连接一个氢和一个R基,氨基酸的不同在于R基的不同.2、氨基酸在核糖体中通过脱水缩合形成多肽链,而脱水缩合是指一个氨基酸分子的羧基(﹣COOH )和另一个氨基酸分子的氨基(﹣NH2)相连接,同时脱出一分子水的过程;连接两个氨基酸的化学键是肽键,其结构式是﹣CO﹣NH﹣;氨基酸形成多肽过程中的相关计算:肽键数=脱去水分子数=氨基酸数一肽链数,游离氨基或羧基数=肽链数+R基中含有的氨基或羧基数,至少含有的游离氨基或羧基数=肽链数,氮原子数=肽键数+肽链数+R基上的氮原子数=各氨基酸中氮原子总数,氧原子数=肽键数+2×肽链数+R基上的氧原子数=各氨基酸中氧原子总数一脱去水分子数,蛋白质的相对分子质量=氨基酸数目×氨基酸平均相对分子质量一脱去水分子数×18.3、分析分子式是C55H70O19N10的“毒性肽”彻底水解后得到的四种氨基酸:在甘氨酸(C2H5NO2)、丙氨酸(C3H7NO2)、苯丙氨酸(C9H11NO2)、谷氨酸(C5H9NO4)中,每种氨基酸都只含有1个N原子,只有谷氨酸分子中含有4个氧原子(其它3种氨基酸分子均含2个氧原子).【解答】解:①构成分子式是C55H70O19N10的该“毒性肽”的四种氨基酸都只含有1个N原子,根据N原子的数量可知该化合物是由10个氨基酸形成的十肽化合物,因此含有的肽键数=氨基酸数﹣肽链数=10﹣1=9个;②在甘氨酸(C2H5NO2)丙氨酸(C3H7NO2)、苯丙氨酸(C9H11NO2)、谷氨酸(C5H9NO4)中,只有谷氨酸含有4个氧原子(其它3种氨基酸分子均含2个氧原子),设该化合物中的谷氨酸数是X个,由“氧原子数=各氨基酸中氧原子总数一脱去水分子数”得4X+(10﹣X)×2﹣(10﹣1)=19,解得X=4个.故选:D.8. 某蛋白质分子由l00个氨基酸组成,含2条肽链,则在氨基酸脱水缩合形成该蛋白质的过程中产生的水分子个数为A.1 B.2 C.99D.98参考答案:D9. 将人类的红血球置于不同浓度蔗糖液中,浸泡半小时之后的结果如图4-3。
山西省2019-2020年高一下学期阶段性测试(4月)语文试卷
第二学期阶段性检测高一语文一、现代文阅读(18分)(一)论述类文本阅读(本题共3小题,6分)阅读下面文字,完成1~3题。
①中西方在饮食、服饰与住房等方面的消费习惯存在着很大的冲突,但从现实来看,每一种消费习惯都是一个民族历史文化的沉淀与积累,因而不存在着“孰优孰劣”的问题。
②具体来说,在服饰消费习惯方面,中国侧重于外在的气质,西方则侧重于内在的舒适;在饮食环境方面,中国侧重于热闹的气氛,西方则侧重于宁静与优雅;在住房方面,中国侧重于稳定,西方则侧重于自由。
因此,每一种消费习惯都在现实生活中存在各自的合理性,随着全球化的发展,中西方也通过改变消费习惯的方式,来体验彼此的历史文化,甚至在某些场合,一种消费习惯也会成为全球化背景下的一种商业服务。
③与消费习惯不同的是,中西方消费观念的融合并不是表现在相互对等地位的借鉴上,而是表现为西方精神消费与享乐主义的消费理念以强大的渗透力影响中国消费者,这也是我们在全球化进程中不可否认的事实。
一方面,当前以信息技术为代表的现代文化传播媒体,从根本上变革了国家贸易信息传播模式,并产生了诸如世界经贸信息咨询平台、经贸期刊、网络互动平台等新型媒介,进而使得世界各国的消费者在满足消费需求的同时,也在精神层面获取了丰富的消费文化。
另一方面,西方社会通过目不暇接的信息化文化传媒方式,把享乐主义为核心的西方消费观念迅速渗入各个国家,甚至在一定程度上成为人们物质与精神消费的“普世价值”。
从现实来看,这种享乐主义消费理念对我国产生巨大的影响,甚至使意识形态领域的价值观念产生动摇。
④中西方消费方式的融合首先表现在消费方式趋同化的趋势。
伴随着当今社会经济全球化进程发展的持续深入,国际贸易市场也在很大程度上由各固定地区的闭塞模式发展为开放性的全球化市场。
在这种形势下,区域性的商品消费需求也随之发展为开放性的全球化需求。
例如说,在当今社会,我们已经完全不能通过一个人是否身穿李宁的运动装,是否吃麦当劳快餐来判断这个人的国籍。
山西省太原市师范学院附属中学2020年高一数学理月考试题含解析
山西省太原市师范学院附属中学2020年高一数学理月考试题含解析一、选择题:本大题共10小题,每小题5分,共50分。
在每小题给出的四个选项中,只有是一个符合题目要求的1. 设公差为-2的等差数列{a n},如果,那么等于()A. -182B. -78C. -148D. -82参考答案:D【分析】根据利用等差数列通项公式及性质求得答案.【详解】∵{a n}是公差为﹣2的等差数列,∴a3+a6+a9+…+a99=(a1+2d)+(a4+2d)+(a7+2d)+…+(a97+2d)=a1+a4+a7++a97+33×2d=50﹣132=﹣82.故选:D.【点睛】本题主要考查了等差数列的通项公式及性质的应用,考查了运算能力,属基础题.2. 从参加环保知识竞赛的学生中抽出60名,将其成绩(均为整数)整理后画出的频率分布直方图如图所示,则成绩在79.5~89.5这一组的频数、频率分别是()A.0.25;15 B.15;0.25 C.18;0.3 D.0.4;18参考答案:B【考点】B8:频率分布直方图.【分析】根据频率分布直方图,求出成绩在79.5~89.5内的频率和频数.【解答】解:根据频率分布直方图知,成绩在79.5~89.5内的频率为0.025×10=0.25,频数为60×0.25=15.故选:B.3. 已知,且,则()A、相等B、方向相同C、方向相反D、方向相同或相反参考答案:D4. 若f(x)是R上的奇函数,且f(x)在[0,+∞)上单调递增,则下列结论:①y=|f(x)|是偶函数;②对任意的x∈R都有f(﹣x)+|f(x)|=0;③y=f(﹣x)在(﹣∞,0]上单调递增;④y=f(x)f(﹣x)在(﹣∞,0]上单调递增.其中正确结论的个数为()A.1 B.2 C.3 D.4参考答案:【考点】命题的真假判断与应用.【分析】由f(x)是R上的奇函数,且f(x)在[0,+∞)上单调递增,知:y=|f(x)|是偶函数;对任意的x∈R,不一定有f(﹣x)+|f(x)|=0;y=f(﹣x)在(﹣∞,0]上单调递减;y=f(x)f (﹣x)=﹣[f(x)]2在(﹣∞,0]上单调递减.【解答】解:∵f(x)是R上的奇函数,且f(x)在[0,+∞)上单调递增,∴y=|f(x)|是偶函数,故①正确;对任意的x∈R,不一定有f(﹣x)+|f(x)|=0,故②不正确;y=f(﹣x)在(﹣∞,0]上单调递减,故③不正确;y=f(x)f(﹣x)=﹣[f(x)]2在(﹣∞,0]上单调递增,故④正确.故选B.5. 不等式的解集为()A. B.C. D.参考答案:B【分析】先将分式去分母,左右两边同乘分母的平方(注意分母不为零),然后求解一元二次不等式的解集即可.【详解】由题意知解得,故不等式的解集为.故选B.【点睛】求解分式不等式时,在去分母的同时一定要注意对分母不为零的限定.6. 已知全集U=R,集合M={x|x2<1},N={x|x2-x<0},则集合M,N的关系用韦恩(Venn)图可以表示为( )参考答案:B略7. 如图所示的茎叶图记录了某产品10天内的销售量,则该组数据的众数为()A.23 B.25 C.26 D.35参考答案:A由茎叶图可得该组数据中23出现次数最多,所以该组数据的众数是23.8. 在△ABC中,,,,则sin B为()A. B. C. D.参考答案:D【分析】利用正弦定理得到答案.【详解】根据正弦定理:即:答案选D【点睛】本题考查了正弦定理,意在考查学生的计算能力.9. 已知x1、x2是函数f(x)=|lnx|﹣e﹣x的两个零点,则x1x2所在区间是( )A.(0,)B.(,1)C.(1,2)D.(2,e)参考答案:B【考点】函数的零点.【专题】函数的性质及应用.【分析】能够分析出f(x)的零点便是函数|lnx|和函数e﹣x交点的横坐标,从而可画出这两个函数图象,由图象可看出,这样即可得出﹣1<lnx1x2<0,根据对数函数的单调性即可求出.【解答】解:令f(x)=0,∴|lnx|=e﹣x;∴函数f(x)的零点便是上面方程的解,即是函数|lnx|和函数e﹣x的交点,画出这两个函数图象如下:由图看出0<﹣lnx1<1,﹣1<lnx1<0,0<lnx2<1;∴﹣1<lnx1+lnx2<1;∴﹣1<lnx1x2<1;∴;由图还可看出,﹣lnx1>lnx2;∴lnx1x2<0,x1x2<1;∴x1x2的范围是().故选B.【点评】考查函数零点的概念,函数零点和方程解的关系,方程f(x)=g(x)的解和函数f(x)与g(x)交点的关系,对数的运算,以及对数函数的单调性.10. 已知奇函数f(x)在[-1,0]上为单调减函数,又α,β为锐角三角形内角,则()A. f(cosα)>f(cosβ)B. f(sinα)>f(sinβ)C. f(sinα)<f(cosβ)D. f(sinα)>f(cosβ)参考答案:C∵奇函数y=f(x)在[?1,0]上为单调递减函数,∴f(x)在[0,1]上为单调递减函数,∴f(x)在[?1,1]上为单调递减函数,又α、β为锐角三角形的两内角,∴,∴,∴,∴.故选C.点睛:(1)在锐角三角形中,,,同理可得:,即锐角三角形中的任意一个角的正弦值大于其它角的余弦值;(2)奇函数图象关于原点对称,单调性在y轴左右两侧相同.二、填空题:本大题共7小题,每小题4分,共28分11. 方程在区间内的所有实根之和为 .(符号表示不超过的最大整数)。
首师附中2019-2020学年第二学期高一数学4月月考试题及答案
首师附中2019-2020学年度第二学期高一数学第二次月考考试试卷一、单选题(共40分,每小题4分,共10小题)1.函数()1log 1a x f x x x +=+(01a <<)的图象的大致形状是( ) A . B .C .D .2.用二分法求函数()2log 2f x x a x =+-零点的近似值时,如果确定零点所处的初始区间为11(,)42,那么a 的取值范围为( )A .(),2-∞B .5(,)2+∞ C .52,2⎛⎫ ⎪⎝⎭D .5(,2)(,)2-∞+∞ 3.已知二次函数f (x )=x 2+bx +c ,若对任意的x 1,x 2∈[-1,1],有|f (x 1)-f (x 2)|≤6,则b 的取值范围是( ) A .[]5,5- B .[]4,4- C .[]3,3- D .[]22-,4.若集合{1,2,3,4,5}A =,{|3}B x x =<,则()R AC B =( ) A .{4,5} B .{}3,4,5 C .{1,2,3}D .{1,2}5.函数y = )A .11{|}22x x x ≥≤-或B .11,22⎧⎫-⎨⎬⎩⎭C .11(,)22- D .1{}2 6.设集合P ={m |-1<m ≤0},Q ={m ∈R|mx 2+4mx -4<0对任意实数x 恒成立},则下列说法正确的是 A .P 是Q 的真子集B .Q 是P 的真子集C .P =QD .P ∩Q =∅7.已知α是第二象限的角,角β终边经过点(sin ,cos )P αα,则β为第几象限的角:A .第一象限B .第二象限C .第三象限D .第四象限8.已知131log 4a =,154b =,136c =,则( ) A .a b c >>B .a c b >>C .c a b >>D .b c a >> 9.已知正实数a ,b 满足2a b +=,则12a b+的最小值( ) A .32 B .3 CD.3+10.如图,A 、B 两点在双曲线4y x=上,分别经过A 、B 两点向坐标轴作垂线段,已知S 阴影=1,则S 1+S 2等于( )A .6B .5C .4D .3二、填空题(共25分,每小题5分,共5小题)11.已知向量(2,1),(,1)a b x ==-,且a b -与b 共线,则x 的值为12.若a 10=12,a m =2,则m =______. 13.如图①是反映某条公交线路收支差额(即营运所得票价收入与付出成本的差)y 与乘客量x 之间关系的图像.由于目前该条公交线路亏损,公司有关人员提出了两种调整的建议,如图②③所示:给出下列说法:(1)图②的建议:提高成本,并提高票价;(2)图②的建议:降低成本,并保持票价不变;(3)图③的建议:提高票价,并保持成本不变;(4)图③的建议:提高票价,并降低成本.其中所有说法正确的序号是______.14.复数2(1+2i)34i-的值是____________. 15.已知函数y =a x−2+2(a >0且a ≠1)恒过定点(m,n ),则m +n =________________.三、解答题(共6小题,共85分)16.设()2,,21x f x m x R m =+∈+为常数. (14分) (1)若()f x 为奇函数,求实数m 的值;(2)判断()f x 在R 上的单调性,并用单调性的定义予以证明;(3)求()f x 在(],1-∞上的最小值.17.有一块铁皮零件,其形状是由边长为30cm 的正方形截去一个三角形ABF 所得的五边形ABCDE ,其中8,AF cm =6BF cm =,如图所示.现在需要用这块材料截取矩形铁皮DMPN ,使得矩形相邻两边分别落在,CD DE 上,另一顶点P 落在边CB 或BA 边上.设DM xcm =,矩形DMPN 的面积为2ycm .(14分)(1)试求出矩形铁皮DMPN 的面积y 关于x 的函数解析式,并写出定义域;(2)试问如何截取(即x 取何值时),可使得到的矩形DMPN 的面积最大?18.已知函数.(14分)(Ⅰ)求的值和函数的最小正周期;(Ⅱ)求的单调递减区间及最大值,并指出相应的的取值集合.19.解关于x 的不等式()222ax x ax a R -≥-∈.(15分)20.已知()42log ,[116]f x x x =+∈,,函数()()()22[]g x f x f x =+.(14分) (1)求函数()g x 的定义域;(2)求函数()g x 的最大值及此时x 的值.21.设:p “关于x 的不等式2504x ax a -++>的解析为R ”,:q “函数()12xf x x a ⎛⎫=-+ ⎪⎝⎭在区间()1,2-上有零点”.(14分)(1)若q 为真,求a 的取值范围;(2)若p q ∧为假,p q ∨为真,求a 的取值范围参考答案1.C【解析】【分析】对x 分类讨论,去掉绝对值,即可作出图象.【详解】()()()log 11log log 101log 0.a a a ax x x f x x x x x x x ⎧--<-+⎪==--<<⎨+⎪>⎩,,,,, 故选C .【点睛】识图常用的方法(1)定性分析法:通过对问题进行定性的分析,从而得出图象的上升(或下降)的趋势,利用这一特征分析解决问题;(2)定量计算法:通过定量的计算来分析解决问题;(3)函数模型法:由所提供的图象特征,联想相关函数模型,利用这一函数模型来分析解决问题.2.C【解析】试题分析:由零点存在性定理,可知02141<⎪⎭⎫ ⎝⎛⋅⎪⎭⎫ ⎝⎛f f ,即()022521221log 41241log 22<-⎪⎭⎫ ⎝⎛-=⎪⎭⎫ ⎝⎛⨯-+⎪⎭⎫ ⎝⎛⨯-+a a a a ,解得252<<a . 考点:函数零点存在性定理的应用.3.C【解析】【分析】由题意得,当x 1,x 2∈[﹣1,1],函数值的极差不大于6,进而可得答案.【详解】∵二次函数f (x )=x 2+bx +c =22b x ⎛⎫+ ⎪⎝⎭+c ﹣24b ,对称轴x =﹣2b , ①﹣2b <﹣1即b >2时,函数f (x )在[﹣1,1]递增, f (x )min =f (﹣1)=1﹣b +c ,f (x )max =f (1)=1+b +c ,故f (﹣1)﹣f (1)=﹣2b ,|f (1)﹣f (﹣1)|=|2b |≤6得23b <≤ ,②﹣2b >1时,即b <﹣2时,|f (1)﹣f (﹣1)|=|2b |≤6得32b -≤<-, ③当﹣1≤﹣2b ≤1,即﹣2≤b ≤2时,函数f (x )在[﹣1,-2b ]递减,函数f (x )在[﹣2b ,1]递增,∴|f (1)﹣f (﹣2b )|≤6,且|f (﹣1)﹣f (﹣2b )|≤6, 即|24b +b +1|≤6,且|24b ﹣b +1|≤6,解得:﹣3≤b ≤3,又﹣2≤b ≤2, 故b 的取值范围是[]3,3-故选C .【点睛】本题考查的知识点是二次函数的图象和性质,熟练掌握二次函数的图象和性质,是解答的关键,属于中档题.4.B【解析】【分析】先求得R C B ,然后求两个集合的交集.依题意{}|3R C B x x =≥,故(){}3,4,5R A C B ⋂=,故选B. 【点睛】本小题主要考查补集、交集的概念和运算,属于基础题. 5.B 【解析】函数有意义,则:22410140x x ⎧-≥⎨-≥⎩,求解不等式组可得:2141,2x x =∴=±, 据此可得函数的定义域为11,22⎧⎫-⎨⎬⎩⎭.本题选择B 选项.6.C 【解析】 【分析】根据不等式的恒成立,分类讨论,确定集合Q ,在根据集合之间的关系,即可求解. 【详解】当m =0时,-4<0对任意实数x 恒成立;当m≠0时,由mx 2+4mx -4<0对任意实数x 恒成立可得216160m m m <⎧⎨∆=+<⎩, 解得-1<m <0.综上所述,Q ={m|-1<m≤0},所以P =Q ,故选C . 【点睛】本题主要考查了一元二次不等式的恒成立问题的求解及集合关系的判定,其中分类讨论求解一元二次不等式的恒成立问题,得到集合Q 是解答的关键,着重考查了分类讨论思想和推理、运算能力,属于中档试题. 7.D【分析】先根据α所在的象限,判断出sin ,cos αα的取值范围,由此判断出P 点坐在象限,进而求得β所在象限. 【详解】由于α是第二象限角,所以sin 0,cos 0αα><,所以P 在第四象限,故β为第四象限角. 【点睛】本小题主要考查三角函数在各个象限的符号,属于基础题. 8.C 【解析】 【分析】首先将b 表示为对数的形式,判断出0b <,然后利用中间值以及对数、指数函数的单调性比较32与,a c 的大小,即可得到,,a b c 的大小关系. 【详解】因为154b=,所以551log log 104b =<=,又因为(133331log log 4log 3,log 4a ==∈,所以31,2a ⎛⎫∈ ⎪⎝⎭, 又因为131133336,82c ⎛⎫⎛⎫⎛⎫ ⎪=∈ ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭ ⎪⎝⎭,所以3,22c ⎛⎫∈ ⎪⎝⎭,所以c a b >>. 故选:C. 【点睛】本题考查利用指、对数函数的单调性比较大小,难度一般.利用指、对数函数的单调性比较大小时,注意数值的正负,对于同为正或者负的情况可利用中间值进行比较. 9.C 【解析】 【分析】 化简1212112112()2()()(3)222b aa b a b a b a b a b+=+⨯⨯=+⨯+⨯=++,再利用基本不等式求解. 【详解】121211211211()2()()(3)(3(322222b a a b a b a b a b a b +=+⨯⨯=+⨯+⨯=++≥+=+当且仅当1),2(2a b ==时取等. 故选:C 【点睛】本题主要考查利用基本不等式求最值,意在考查学生对这些知识的理解掌握水平. 10.A 【解析】 【分析】根据反比例函数的解析式可得4xy =,由此求得两个矩形的面积,用总面积减去叠加起来的两个阴影部分的面积,求得12S S +的值. 【详解】∵点A 、B 是双曲线4y x=上的点,分别经过A 、B 两点向x 轴、y 轴作垂线段,则根据反比例函数的图像的性质得两个矩形的面积都等于4k =,所以1244126S S +=+-⨯=,故选A. 【点睛】本小题主要考查反比例函数的图像与性质,考查矩形面积的计算,属于基础题. 11.2-【解析】试题分析:a b -(2,2)x =-,由a b -与b 共线得2(2)x x =--,解得2x =-. 考点:向量的共线. 12.5 【解析】5,5a m ==== 13.(2)(3) 【解析】 【分析】根据题意知图像反应了收支差额y 与乘客量x 的变化情况,即直线的斜率说明票价问题;当0x =的点说明公司的成本情况,再结合图像进行说明。
2019-2020学年太原师范学校附属中学高三英语第一次联考试卷及答案
2019-2020学年太原师范学校附属中学高三英语第一次联考试卷及答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AVienna Concerts 2021Every day, one to three dozen Vienna concerts are staged. You can use this checklist to find a fantastic Vienna concert that is worth its money.Vienna Chamber OrchestraThe Vienna Chamber Orchestra has existed for more than 70 years. The international reputation of the Vienna Chamber Orchestra is documented by worldwide tours. The length is 65 minutes.Date: 20th JuneLocation: Minoritenkirehe, Minoritenplatz 1, 1010 ViennaTickets: 30 Euros per adult and free admission for childrenVienna Philharmonic OrchestraIn 2021, famous conductor Gustavo Dudamel will lead the Vienna Philharmonic Orchestra. Expect an amazing show with top quality classical music and fireworks. The concert lasts one and a half hours. You have to arrive at least 20 minutes early to find a place to sit.Date: 4th and 5th OctoberLocation: Schonbrunn Palace, palace gardens, in front of Naptune fountain, Schonbrunner Schlossstrasse 47, 1130 Vienna.Tickets: 30 Euros(students, children and senior citizens will receive a 10% discount per ticket)Mozart Piano Sonatas(奏鸣曲)On Saturdays and Sundays, the St. Peter’s church opens its basement to a small group of Mozart fans. In simple but elegant surroundings, international pianists perform Mozart piano sonatas on a Steinway piano. The concerts start in the early evening and last 90 minutes.Date: throughout the yearLocation: St. Peter’s basement, Petersplatz 1, 1010 ViennaTickets: 29 Euros for adults and 16 Euros for children between 8 and 14(children below 8 can enterfor free.)Vivaldi: The Four SeasonsTo point out Vivaldi’s connection to Vienna, the Italian violinist lived in the city for some time, and eventually died there. Closer to where he was buried, the church St. Charles Borromeo regularly stages The Four Seasons, Vivaldi’s main work. The concerts start at 8:15 pm on weekends and last 60 minutes. People can arrive and enter anytime during the performance.Date: throughout the yearLocation: Church St. Charles Borromeo(Karlskirche), Kreuzherrengase 1, 1040 ViennaTickets: 25 Euros for all ages(free cancellation 24 hours before the event)1.For a couple with their 10-year-old child, which is the cheapest?A.Mozart Piano Sonatas.B.Vienna Chamber Orchestra.C.Vivaldi: The Four Seasons.D.Vienna PhilharmonicOrchestra.2.What do the Vienna Philharmonic Orchestra and Mozart Piano Sonatas have in common?A.They last one and a half hours.B.They are held in closed surroundings.C.They offer a discount for students and the aged.D.They are suitable for people who prefer pop music.3.What can we know about the concert—The Four Seasons?A.It forbids people to enter after 8:15 pm.B.It describes Vivaldi’s stories related to Vienna.C.It allows you to return your ticket for free a day in advance.D.It was created by the Church St. Charles Borromeo to memorize Vivaldi.BMore than 10,000 people were made homeless in Ternang when the Sungai Mas overflowed its banks yesterday after six days of continuous heavy rain.The wooden bridge across the river has been washed away. The town is cut off by flood waters. At the fifth mile, Jalan Tengkn, the water is two meters deep. It is closed to all traffic. Flooding first happened at mid-afternoon yesterday along the river banks. People trying to get to higher ground were just in time to escape the destroying of the flood. Most of the flood victims(受害者) had to leave all their things behind.The National Flood Relief(救济) Center was reported to give its help and by early evening the whole town was moved out, helped by the army, police, Red Cross Society and volunteers(志愿者).The flood victims are now housed in different simple relief centers in the nearby town of Ternang. “Everything possible is being done to help the unlucky people,” a government spokesman said, “In fact, money, food and clothing have begun to come in from public organizations and helpful people. A Disaster Relief Fund(救灾基金会) will be started as soon as possible.”According to the latest reports it is still raining heavily at Ternang. The whole town is expected to be wholly covered by the water. So far no deaths have been reported.4. This passage is probably taken from______.A. a storybookB. a textbookC. a magazineD. a newspaper5. It seems that the flood happened just because ______.A. the banks were too lowB. the wooden bridge is solid (坚固)C. the river was too narrowD. they had had wet days for some time6.From the passage we know that ______.A. though the town was flooded, you could still go there by busB. as soon as the water flowed over the banks, people began to go to higher landsC. the government and the whole society are taking great care of the flood victimsD. the flood hasn't brought a large loss to the town as nobody died in the flood7. What is the best title for this passage?A. A Big FloodB. Ternang Is destroyedC. Over 10,000 People Are HomelessD. Rescue Team ArrivedCIn Copenhagen, an 8-year dream was realized when the first paid skiers took their runs down a one-third-mile course (路线).They skied on what is possibly the greenestpower factory in the world.The factory is so clean and safe that designers were able to turn its buildings into a new center for social life.The waste-to-power factory itself opened in 2017 under the name Amager Bakke.Bjarke Ingels is the architect whosecompany came up with the idea eight years ago of designing a power plant building that would join mountain sports into its very nature.“It is the cleanest waste-to-energy power plant in the world.It is not only better for the environment, it is also moreenjoyable for the lives of its citizens.” Ingels says 97% of city people get their heating as a by-product of energy production.It comes from a system where the electricity, heating, and waste disposal (处理) are mixedinto a single process.He dreams that it is also becoming an example that others can look to and say, “IfCopenhagencan do it why can' t we?"There are no hills in this island city, but now people can ski locally, while enjoying the best views ever seen of the harbor.Another thing missing hereis snow cover throughout the winter, so designers set up a kind of special "plastic grass" that provides the perfect friction (摩擦力) for downhill winter sports.In a country where 600, 000 skiers always had to travel to practice sking, to be able to finally ski in their backyard-and, all year round - is, as one skier said, “AMAZING.”The company hopes to see 300, 000 visitors enjoying the experience of Copen hill each year, with the ski slope costing $ 22 an hour or just $ 366 for a full season pass.Meanwhile, the city is one step closer to its final goal of becoming the world's first carbon-neutral city by 2025.We thinkit might be all “down hill” from here.8. How does the power factory produce electricity?A. By using oil.B. By using coal.C. By usingwind.D. By using waste.9. What' s Ingels' dream according to the passage?A. To make more tall buildings in different big cities.B. To help more skiers to ski in high mountains.C. There will be more green power factories in the world.D. More and more people will ski in the power factory.10. Where do the skiers ski in the power factory?A. On man-made snow.B. On man-made ice.C. On plastic grass.D. On real sand.11. The underlined part “it might be all 'downhill' from here" means that________.A. they will soon reach their final goalB. they will soon draw many visitorsC. they will produce more electricityD. they have difficulties reaching the goalDA company called Neuralink has shared a video where a monkey is playing a video game. That' s fairly unusual, but what makes the video even stranger is that the monkey is playing the video game with just his mind.The monkey in the video is called Pager who has two of Neuralink's special "Link" devices(装置)inside his brain. The devices planted in Pager's brain are connected to 2,048 wires which lead to the parts of Pager's brainthat control movements of the arms and hands.Scientists taught Pager to play a video game. At first, Pager controlled the video game using a joystick it, which is a normal gaming controller. But as Pager played, his Link devices wirelessly sent out information about the signals his brain was using to control his arms and hands. Neuralink's scientists recorded all of these signals.Then they used computers to match the signals from Pager's brain to the movements that his hands were actually doing. This was the most difficult work and the scientists counted on artificial intelligence ( AI) to help them decode(解码)Pager's brain signals.The final step was to have a computer make moves inthe video game as if Pager had actually moved the joystick. If Pager thought about moving the joystick up, the computer would send an “up” signal to the video game.At first, the researchers let Pager keep moving the joystick with his hand, even though it was no longer connected to the computer. But soon Pager was able to play the video game using just his brain.Even though Neuralink's work right now focuses on animals and video games, there's a very serious purpose behind it. Neuralink wants to make it possible for humans who have lost the ability to make physical movements to interact with the world around them.12. What are “Link” devices used to do?A. To pick up the arms' and hands' signals.B. To link the computer to the monkey's brain.C. To send out information about the brain's signals.D. To control movements of the arms and hands.13. What challenged scientists most in the study?A. Recording and sending out body signals.B. Training Pager to use the joystick correctly.C. Planting "Link" devices into Pager's brain.D. Matching brain signals to body movements.14. What is Neuralink's real purpose of the study?A. To test artificial intelligence.B. To help those without arms or legs.C. To study how animals play video games.D. To develop more complex video games.15. What can be the best title for the text?A. Video Games for Animals Are Developed.B. Science Proves the Intelligence of Monkeys.C. Monkey Plays Video Games Using His Mind.D. Neuralink Is Leading the World in Technology.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
2019-2020学年太原师范学校附属中学高三英语月考试题及答案解析
2019-2020学年太原师范学校附属中学高三英语月考试题及答案解析第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AFilms to watch in MarchGretaA lonely young waitress finds a handbag on aNew Yorksubway train. Luckily, the address is inside, so she returns it to the piano teacher who left it there. She then discovers that the piano teacher makes a habit of dropping bags around the city on purpose to make new friends. Directed by Neil Jordan, the actors are attractive. Grace Moretz is the waitress and Isabelle Huppert is the one who admires her. Thanks to them, Greta winds up being far more enjoyable than it has any right to be.The AftermathThe Aftermath is one of the few World WarⅡ-related films. Based on Rhidian Brook’s novel,this touching romantic movie is starred by Keira Knightley, who is the wife of a British officer. She hates the Germans because her son was killed in an air raid. But is there a chance that a tall, dark andhandsome man might persuade her to overcome her hate?Captain MarvelIt took Marvel Studios a decade to finally make a female superhero. It’s also the first Marvel film to be directed by a woman, who has directed Half Nelson and Missisippi Grind. Captain Marvel is set in the 1990s. The Oscar-winning Brie Larson stars as Carol Danvers, a US Air Force fighter pilot, while Samuel L Jackson, as usual, plays Nick Fury.DumboDumbo is a classic Disney cartoon, who has big ears and there have been plenty of those kind of movies in recent years.Burtonalways has inspirations to direct such kind of movies from Edward Scissorhands to Miss Peregrine’s Home for Peculiar Children. Magical figures have always been his favorite characters.1. What makes Captain Marvel special?A. Winning Oscar.B. Its female director.C. Time setting.D. A woman pilot.2. Which film is better for a 7-year-old kid to watch?A. The AftermathB. Captain MarvelC. GreteD. Dumbo3. Where can you most probably read the text?A. Reader’s DigestB. NatureC. Scientific AmericanD. National GeographicBNot long after the first fitness magazine was published, a list probably followed soon after, ranking the best fitness equipment. This tradition has continued, with the implied message: usethisand exercise willbe yours.And that's part of the problem, says Dr. Lieberman, a professor of Harvard University. There isn't one “best” anything to achieve fitness. Besides, people understand exercise is good for them. Knowledge about exercise still doesn't motivate.Before you can answer why, it helps to look at history. Before the Industrial Revolution, people fetched water and walked up stairs because they had to. But then technology made life and work easier. Exercise has become something that people have to carve out time for. “It's a fundamental instinct to avoid physical activity when it's neither necessary nor rewarding,” he says.It would seem like being healthy would qualify as necessary, but a doctor's prescription to exercise “can make it like taking cod liver oil,” Lieberman says. “Sometimes it works, but more often than not, it doesn't. And it's still coming across as an order, and “not having a heart attack in five years is not an immediate reward,” says Dr. Beth Frates, assistant professor at Harvard Medical School.People might not want to exercise because it's never been enjoyable. Most of us probably have memories of gym class, not being picked for a team, or being in a fitness center that's filled with in-shape people. The majority don't feel excited. They feel that exercise isn't for them, but it can be. Coaching people in an empowering and motivating way can work much better than ordering someone to exercise. It starts with an expanded definition of what counts as exercise, and an injection of what's rarely used to describe exercise, but is certainly allowed: namely, fun.4. What does the underlined “this” in paragraph 1 refer to?A. The magazine.B. The tradition.C. The equipment.D. The message.5. What can we infer about technology?A. It improves life quality.B. It saves people's time.C. It drives social progress.D. It makes exercise less likely.6. Why does the author mention “cod liver oil” in paragraph 4?A. To attach importance to health.B. To present a doctor's prescription.C. To explain exercise is considered inessential.D. To introduce the latest medical application.7. What is the main idea of the last paragraph?A. Exercise should be made more joyful.B. It's more fun to work out with others.C. We may encounter bad workout experiences.D. Orders work well to motivate people to exercise.COne weekend I went toBuffaloto talk at a writers' conference organized by a group of women writers. The women were serious about their writing skills, and the articles they had written were solid and useful. They asked me to take part in a radio talk show earlier in the week to publicize the conference-they would be with the host in the studio and I would be on a telephone linking from my apartment inNew York.The appointed evening arrived, and my phone rang, and the host came on and greeted me. He said he had three lovely ladies in the studio with him and he was eager to find out what we all thought of the present state of literature and what advice we had for all his listeners who were members of the literati and had literary ambitions themselves.This hearty introduction dropped like a stone among us, and none of the three lovely ladies said anything, which I thought was the proper response.The silence lengthened, and finally I said, “I think we should stop mentioning the words literature and literary and literati. We're here to talk about the skills of writing.” Iknew that the host had been given information about what kind of writers we were and what we wanted to discuss. But he had no other preparation. "Tell me what insights do you have about the literary experience inAmericatoday?” Silence also greeted this question.He didn’t know what to do with that, and he began to mention the names of authors like Ernest Hemingway and Saul Bellow and William Styron, whom we surely regarded as literary giants. We said those writers didn't happen to be our models, and we mentioned people like Lewis Thomas and Joan Didion and Gary Wills, whom he hadn't heard of. We explained that these were writers we admired. “But don't you want to write anything literary?” our host said We were speechless.It was one of the all-time upset radio talk shows.8. What do we know about the talk show?A. It was organized by women writers.B. It was publicized at the conference.C. The author went toBuffaloto take part in it.D. The author participated in it inNew York.9. What does the underlined sentence in paragraph 2 mean?A. The introduction struck us heavily with a stone.B. The introduction received embarrassing response.C. The introduction increased the listeners' interest.D. The introduction carried the host's praise for us.10. What was the author's reaction when the host mentioned the three great literary- giants?A. Excited.B. Inspired.C. Uninterested.D. Satisfied.11. Who may be the author's model?A. Joan Didion.B. Ernest Hemingway.C. Saul Bellow.D. William Styron.DAs artificial intelligence(AI) systems become more advanced, we can expect them to be used more often in the world of human medicine and healthcare. AI is designed to imitate(模仿)the human brain in decision making and learning, so with the computing power to learn tasks in days or even hours, it is possible to create medical AIs that rapidly outperform doctors in certain tasks.Data plays a hugely important role in helping AI systems learn about human medicine. AI systems are trained on large data sets gathered from real-life cases. Providing detailed patient information in quantities is a crucial factor for their success.One of the most important areas for influencing global health is in the field of epidemiology(流行病学)。
2019-2020学年太原师范学校附属中学高三生物月考试卷及答案
2019-2020学年太原师范学校附属中学高三生物月考试卷及答案一、选择题:本题共15小题,每小题2分,共30分。
每小题只有一个选项符合题目要求。
1. 在搭建DNA分子模型的实验中,模型零件中有4个碱基C,6个碱基G,3个碱基A,7个碱基T,脱氧核糖40个,磷酸100个,脱氧核糖和磷酸之间的连接物14个,代表氢键的连接物和脱氧核糖和碱基之间的连接物充足,能搭建一个DNA分子片段的碱基对是()A.4对B.5对C.6对D.7对2. 关于免疫细胞的叙述,错误的是A. 淋巴细胞包括B细胞、T细胞和吞噬细胞B. 血液和淋巴液中都含有T细胞和B细胞C. 吞噬细胞和B细胞都属于免疫细胞D. 浆细胞通过胞吐作用分泌抗体3. 如图为人体神经元细胞模式图,据图分析。
下列叙述错误的是()A.A点属于神经元的轴突部分B. 若控制该细胞的呼吸作用,将影响神经兴奋的传导C. ④中的物质属于神经递质,释放到④的方式是胞吞D. 若刺激A点,图中电流计B将发生2次方向相反的偏转4. 下列关于组成细胞的化合物的叙述正确的是()A.碳元素是构成生物体的基本元素,可形成链式或环式结构,在一个二十三肽的化合物中,最多含有肽键22个B.在烟草细胞中,由A、G、T、U四种碱基参与构成核苷酸的种类有6种C.糖原、蛋白质和核糖都是生物体内的大分子化合物D.Fe、K等大量元素在细胞内有重要作用,如组成复杂化合物5. 下列关于群落结构和群落演替的叙述,正确的是()A. 群落水平结构与地形、土壤湿度、光照强度有关,与生物自身特点无关B. 群落是指在相同时间聚集在一定区域中各种动物、植物种群的集合C. 自然群落一般是向物种多样化的方向演替,而且种间关系越来越复杂D. 人类活动可以改变自然群落演替的方向,不改变演替的速度6. 如图表示细胞核的结构,下列关于细胞核结构的说法,错误的是()A.④与④的膜成分很相似B.④能够将核内物质与细胞质分开C.④是细胞代谢和遗传的控制中心D.蛋白质合成旺盛的细胞中,④的数量较多7. 每年二月的最后一天为“国际罕见病日”。
2019-2020学年太原师范学院附属中学高三生物一模试题及答案解析
2019-2020学年太原师范学院附属中学高三生物一模试题及答案解析一、选择题:本题共15小题,每小题2分,共30分。
每小题只有一个选项符合题目要求。
1. 如图表示生物体内发生的两个化学反应,请判断下列相关说法中正确的是()A.A TP分子水解时,图中所示的化学键③③最易断裂B.细胞中的吸能反应一般与ATP的合成反应相联系C.图中酶1和酶2的化学本质相同,但是二者的种类不同D.A TP与ADP间相互转化的能量供应机制只发生在真核细胞内2. 下列关于种群叙述,错误的是()A.种群最基本的数量特征是种群密度B.性别比例在一定程度上影响种群的死亡率C.出生率和死亡率、迁入率和迁出率直接决定种群密度D.某湖泊每平方米水面鲫鱼的数量是这个鲫鱼种群的种群密度3. 豌豆高茎对矮茎为显性,现在有高茎豌豆进行自交,后代既有高茎又有矮茎,比例为3:1,将后代中全部高茎豌豆再进行自交,则所有自交后代的表现型之比为A. 1:1B. 3:1C. 5:1D. 9:14. 如图所示的遗传病的致病基因为隐性基因,且在常染色体上。
假定图中③1和③2婚配生出患病孩子的概率是1/6,那么,得出此概率值需要的限定条件之一是一些个体必须是杂合体,这些个体包括A. I-1B. I-2C. ③-2D. ③-45. 基因型为Aa的某植株产生的a花粉中,有2/3是致死的。
则该植株自花传粉产生的子代中,AA:Aa:aa基因型个体的数量比为()A.3:4:1B.9:6:1C.3:5:2D.1:2:16. 下列实例分析不正确的是()A. 某人因意外车祸而使大脑受损,其表现症状是能够看懂文字和听懂别人谈话,但却不会说。
这个人受损伤的部位是言语区的S区B. 一位病人未受外伤,能主动说话,听觉也正常,但听不懂别人说话,连自己的话也听不懂,这位病人是大脑左半球的H区有病变C. 当你专心作答试题时,参与的高级中枢主要有大脑皮层V区和S区D. 某同学正在跑步,下丘脑和脑干也参与调节7. 李清照《如梦令》词:试问卷帘人,却道海棠依旧。
2019-2020学年太原师范学院附属中学高三英语月考试卷及参考答案
2019-2020学年太原师范学院附属中学高三英语月考试卷及参考答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项ANational Disability Insurance Scheme (方案)The National Disability Insurance Scheme (NDIS) will transform the way Queenslanders with disability are supported and change the way disability services are funded and delivered.Under the scheme, Queenslanders with disability will have choice and control over how they access support and who delivers them. They will also have certainty that they will be supported throughout their lifetime to achieve their personal goals.The NDIS will have an effect on the following programs.School Transport Assistance Program for Students with DisabilityThe NDIS will not disrupt existing services for qualified students. The Queensland Government will also continue to provide school transport assistance for students with disability who are not qualified to receive funding via the NDIS.For more information about the School Transport Assistance Program, and to check your qualification, visit the Education and Training website.Taxi Subsidy (补助金) SchemeThe Queensland Governmenthas lengthened the Taxi Subsidy Scheme (TSS) membership for NDIS qualified members to 31 October, 2022. This will allow more time to solve transport support arrangements under the Commonwealth’s NDIS.You can find more information about the TSS and your qualification on the TransLink website.Disability Parking Permit SchemeNo changes will be made to the Disability parking permit scheme when the NDIS is introduced inQueensland. Current arrangements for this scheme will be maintained.You can find more information on this scheme, and check your qualification, on the Queensland Government website.Public Transport Concessions for People with DisabilityThere will be no change to concessions on public transport for people with disability when the NDIS isintroduced inQueensland. TransLink will continue to ensure concessions are provided for disabled persons travelling on public transport inQueenslandwhen the NDIS is introduced.You can find more information about public transport discounts for people with disability, and check your qualification, on the TransLink website,1.Which program helps drive the disabled to and from school?A.Taxi Subsidy Scheme.B.Disability Parking Permit Scheme.C.Public Transport Concessions for People with Disability.D.School Transport Assistance Program for Students with Disability.2.What can we learn about Taxi Subsidy Scheme?A.The scheme is for parking permit.B.The existing membership can be effective for longer time.C.There is no change to current arrangements for the scheme.D.The NDIS will not break off existing services for qualified students.3.What do the four programs have in common?A.They are all related to transport.B.They are all largely affected by NDIS.C.They all can be checked on the same website.D.They all provide discounts for disabled persons.BDogs are often referred to as “man's best friend”. But MacKenzie, a four-pound Chihuahua (奇瓦瓦狗), who was named winner of the 2020 American Hero Dog competition, is making the world a better place for humans and animals alike. Often called the “Oscars for dogs”, the award recognizes dogs who make great contributions to society.This year's competition attracted over 400 competitors from across the country. While all were impressive, it was tiny MacKenzie who won the judges' hearts. Born at a rescue shelter in Hilton, New York, in 2013, she had a cleft palate (腭裂) that required her to be tube fed for the first year of her life. A life-saving operation, performed in 2014, gave her the ability to eat and drink independently, enabling the tiny dog to focus on doing what she loved most: taking care of others.The seven-year-old Chihuahua is now gainfully “employed” by the Mid Foundation, a Rochester, NewYork-based non-profit organization that shelters and cares for animals born with disabilities. MacKenzie's official job is “to provide love and care for baby rescue animals born with birth defects”. The Chihuahua is good at her job and hasnurturedmany different species-from puppies to kittens to turkeys, squirrels, birds and even a goat. She acts as their mother and teaches them how to socialize, play, and have good manners.In addition to her role as an animal caretaker, MacKenzie also has the important job of greeting the foundation's volunteers and friends. The incredible dog, who has lost her ability to bark, also visits area schools to help children understand physical disabilities in both animals and people. Her heart-warming and inspiring story makes MacKenzie worthy of America's top dog honor!4. What made MacKenzie American Hero Dog?A. Being man's best friend.B. Her struggle with disabilities.C. Rescuing animals with disabilities.D. Her contributions to a better world.5. What can we infer about MacKenzie from Paragraph 2?A. Her growth path was not easy.B. She was deserted by her owner.C. She was operated on at two years old.D. She still needs taking care of by others.6. What does the underlined word “nurtured” in Paragraph 3 mean?A. Trained.B. Comforted.C. Tended.D. Abused.7. Which can be a suitable title for the text?A. MacKenzie—The Most Hard-working DogB. MacKenzie—America's “Most Heroic Dog”C. Chihuahua—Inspiration of Positive EnergyD. Chihuahua—Appeal for Animals' ProtectionCNewspapers in Great Britainvarygreatly in their ways of carrying the news. There are serious papers for those who want to know about important happenings everywhere, both at home and abroad. There are popular newspapers for those who prefer entertainment to information.The London newspaper that is best known outside Great Britain is probably the Times. It began in 1785, and has a high reputation for believable news and serious opinions on the news. It calls itself an independent paper, which means that it does not give its support to a particular political party. Its leading articles give the opinions of the editors, not those of the owners of the paper.Letters to the editor are printed in the newspaper. These parts of the Times are always interesting. Most of the letters are serious subjects. But from time to time there will be long letters on the subject which is not at all serious, perhaps on a new fashion of dress, or the bad manners of the young people, compared with manners ofthirty years ago.8. If you want to get pleasure, please buy yourself _________.A. a serious newspaperB. foreign newspaperC. any independent paperD. a popular newspaper9. The Times has been famous to outside Great Britain for ________ years.A. 19B. 85C. 236D. 22910. The Times is an independent paper because ________.A. it supports no political partiesB. it is not controlled by the British GovernmentC. it gives special support to all the political parties.D. the editor’s opinions are not examined by the owners of the paper11. The underlined word “vary” in the passage probably means “_________”.A. improveB. compete with each otherC. are differentD. keep in touch with each otherDHoneybees can’t swim, and when their wings are wet, they can’t fly, either. But Chris Roh and other researchers at the California Institute of Technology found that when bees drop into bodies of water, they can use their wings toproduce little waves and slide toward land-like surfers who create and then ride their own waves.As with many scientific advances-IsaacNewton’s apple or Benjamin Franklin’s lightning bolt-Dr. Roh’s experiment began with a walk. Passing Caltech’s Millikan Pond in 2016, he observed a bee on the water’s surface producing waves. He wondered how an insect known for flight could push itself through water.Dr. Roh and his co-worker, Morteza Gharib, used butterfly nets to collect localPasadenahoneybees and observed their surf-like movements. The researchers used a wire to restrict each bee’s bodily movement, allowing close examination of their wings. They found that the bee bends its wings at a 30-degree angle, pulling up water and producing a forward force. Bees get trapped on the surface because water is roughly three times heavier than air. But that weight helps to push the bee forward when its wings move quickly up and down. It’s a tough exercise for the bees, which the researchers guess could handle about 10 minutes of the activity.The researchers said the surf-like movement hasn’t been documented in other insects and most semiaquatic insects use their legs forpropulsion, which is known as water-walking. It may have evolved in bees, they-predicted.Dr. Roh and Dr. Gharib have imagined many practical applications for bees’ surfing. One plan is to use theirobservations to design robots able to travel across sky and sea. “This could be useful for search and rescues, or for getting samples of the surface of the ocean, if you can’t send a boat or helicopter,” Dr. Gharib said.12. What does the author intend to show by mentioningNewtonandFranklin?A. Roh’s admiration for them.B. Roh’s chance discovery about bees.C. Their outstanding talent for science.D. Their similar achievements in discovery.13. What plays the most vital role in a bee’s moving forward on water?A. The air weight.B. Its leg extension.C. The water movement.D. Its continuous wingbeat.14. What does the underlined word “propulsion” in Paragraph 4 mean?A. Fast flightB. Driving force.C. Pulling speed.D. Explosive power.15. What does the text mainly tell us?A. Honeybees can surf to safety.B. Bees help scientists make inventions.C. Insects can adapt to the environment.D. Nature is a helpful guide for discovery.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
2019-2020学年太原师范学院附属中学高三英语月考试题及答案解析
2019-2020学年太原师范学院附属中学高三英语月考试题及答案解析第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项ANAME: JohnFAVORITE SPORT: Basketball FAVORITE SNACK: PizzaHOBBY: Photography PET: Beagle named MaxFUNNIEST MOMENT: “On Max's birthday, we sang the ‘Happy Birthday’ song to him and he got a big treat. A month later, my family sang ‘Happy Birthday’ to me. Max got so excited because he remembered the song. He whined(嘀咕) when he didn't get a treat, so we gave him one.”NAME: SarahFAVORITE SPORT: Track and field FAVORITE SNACK: GranolaHOBBY: Guitar PET: Cat named LuluFUNNIEST MOMENT: “One day in my kindergarten, I opened my snack bag and found a tennis ball and a sock! My little brother had played his first practical joke. Thanks, Bryan!”NAME: PaulFAVORITE SPORT: Baseball FAVORITE SNACK: Apple with peanut butterHOBBY: Making comics PET: Tropical fishFUNIEST MOMENT: “In a school play, I was supposed to say the line ‘Stop right there, cowboy!’ Devin was playing the cowboy, and 1 said, ‘Stop right there, Devin!’ It was supposed to be a serious part of the play, but Devin cracked up. Then everybody else laughed, too, including me.”NAME: ScottFAVORITE SPORT: Soccer FAVORITE SNACK: BananasHOBBY: Drawing dinosaursPET: Hermit crab named HermieFUNNIEST MOMENT: “One night, we were camping in a state park. I heard a loud thumping(砰砰作响) outside the tent. I was sure that it was a bear! I used my flashlight to look around the campsite(野营地) and saw a little toad hopping away, going thump, thump, thump!”1.Whom will you get in touch with if you also like taking photos?A.Scott.B.Sarah.C.John.D.Paul.2.Where did Sarah find the tennis ball and the sock?A.At her friend's birthday party.B.In her kindergarten.C.In her school.D.In a state park.3.Outside the tent, what thumped that night?A.A bear.B.A cat.C.A fish.D.A toad.BOne rainy afternoon, I was on a crosstown bus when ayoung woman jumped on. She had a child with her who must have been about 3 or 4 years old.The bus was full, bumpy, and it soon got noisy as her kid began crying because he couldn’t sit next to his mother. There were a couple of open seats, but they weren’t together. She wasflusteredand looked embarrassed.Then another woman, a little older, stood up and moved so that the mother and child could sit together. The mom smiled as a thank-you. And then three words came out of the older woman’s mouth that elevated the entire energy of that bus ride: “I’ve been there”.Simple, undramatic and honest. In that moment, it seemed to unite people. Why? Because almost all experiences are shared human experiences. We forget that, as we forge (前进) through life, focused onour own troubles and needs—which are actually less unique than we think. How can these three words create more connection in your life? Ask yourself: “Where am I holding back?One thing I know for sure is this: Healing others helps heal yourself. I noticed this recently with my friend, Tracy, who took a new friend who had suffered a miscarriage under her wing. Tracy had three of them before having her daughter two years ago. Our intellect needs a doctor to explain the medical side of things, yes. But our souls need human connection to help us along. No one can do that better than someone who has been exactly where you are.Can the essence of these three words help you make a small difference right now? It can be as simple as volunteering your seat, sharing some helpful advice or even lightening the mood with a joke when you notice that someone’s uncomfortable—because we’re all in this together.4. The underlined word “flustered” in the second paragraph is closest in meaning to _______.A. angryB. anxiousC.scaredD. upset5. What does the woman mean by saying “ I’ve been there”in the third paragraph?A. The woman was on the bus and saw what had happened to the boy.B. The woman got to her destination and was ready to get off the bus.C. The woman once had the similar experience with that mother.D. The woman took the exact seat that the boy was on just now.6. Which of the following statements is TRUE according to the passage?A. Everyone has his or her own unique problem that is difficult to solve.B. Doctors can help us get through when we have mental or physical problems.C. The author’s friend Tracy felt better after she was comforted by her new friend.D. One can indeed make a difference to those in need of help by doing simple things.7. The passage isintended to _______.A. show a harmonious world by telling some touching storiesB. praise those who are willing to help others in emergenciesC. appeal to readers to give timely help to those in needD. illustrate some ways of helping others in detailCAccording to a survey published by the American Institutes for Research last year, a total of 57 colleges were operating some form of CBE programs and about 85 percent of all the higher education officials said they were either designing a CBE program at their school or were considering doing so.Students in a CBE program choose a central field of study, just as they would at a traditional college or university. Yet instead of attending a series of classes led by professors or teaching assistants at schools, the students study online and direct themselves.CBE programs require students to show their understanding of a given set of sills Students must prove their mastery of skills that relate to their field of choice by taking related exams. Once they have met all the requirements of their study programs, the students will get their degrees.CBE programs have made use of many new technologies, especially internet and online media. This helps reduce barriers for nontraditional and other students by bringing higher education to them. And programs that permit students to work at their own speed may save students' money by reducing the time it takes for them to earn a degree.But some educators have concerns about the value of the education that CBE programs offer. Johann NeematWesternWashingtonUniversityargues that the purpose of higher education is not simply to help students master certain skills. It should teach students how to think critically (批判性地) understand the subjects they are studying more deeply and see how they are connected to other subjects. Only that way can they put the knowledge to better use.He said, “You need to explore, think .. get shaken, have a conversation and struggle. Andthose things take time.”Instead of supporting CBE, he adds, policy makers and educators should look for ways to improve access and reduce costs for traditional higher education.8. How are CBE programs different from traditional college education?A. They require students to choose their subjects.B. They offer shorter curricula and are less expensive.C. They heavily rely on the information technologies.D. They allow students to take easier examinations.9. What can we learn from Johann Neem's words?A Free access to traditional education should be provided.B. Higher education just focuses on critical thinking skills.C. Students should spend longer time completing the degree courses.D. College students should be challenged to explore around their subjects.10. How does Johann Neem's attitude toward CBE programs?A. Supportive.B. Disapproving.C. Sympathetic.D. Uncaring.11. What is the author's purpose in writing the text?A. To press policy-makers to provide more affordable education.B. To show the disadvantages of the traditional college education.C. To introduce a new controversial trend in the higher education.D. To encourage educators to improve the quality of CBE programs.DYou've probably heard it suggested that you need to move more throughout the day, and as a general rule of thumb, that "more" is often defined as around 10,000 steps. With many Americans tracking their stepsvia new fitness-tracking wearables, or even just by carrying their phone, more and more people use the 10,000-step ruleas their marker for healthy living. Dr. Dreg Hager, professor of computer science at Johns Hopkins, decided to take a closer look at that 10,000-step rule, and he found that usingitas a standard may be doing more harm than good for many.“It turns out that in 1960 in Japan they figured out that the average Japanese man, when he walked 10,000 steps a day burned something like 3,000 calories and that is what they thought the average person should consume so they picked 10,000 steps as a number” Hager said.According to Hager, asking everyone to shoot for 10,000 steps each day could be harmful to the elderly or those with medical conditions, making it unwise for them to jump into that level of exercise, even if it's walking. The bottom line is that 10,000 steps may be too many for some and too few for others. He also noted that those with shorter legs have an easier time hitting the 10,000-step goal because they have to take more steps than people with longer legs to cover the distance. It seems that 10,000 steps may be suitable for the latter.A more recent study focused on older women and how many steps can help maintain good health and promote longevity (长寿).The study included nearly 17,000 women with an average age of 72. Researchers found that women who took 4,400 steps per day were about 40% less likely to die during a follow-up period of just over four years: Interestingly, women in the study who walked more than 7,500 steps each day got no extra boost in longevity.12. What does the underlined word "it' in Paragraph 1 refer to?A. The phone recording.B. The 10,000-step rule.C. The healthy living.D. The fitness-tracking method.13. What does Paragraph 2 mainly talk about?A. How many steps a Japanese walks.B. How we calculate the number of steps.C. If burning 3,000 calories daily is scientific.D. Where 10,000 steps a day came from.14. Who will probably benefit from 10,000 steps each day according toHager?A. Senior citizens.B. Young short-legged people.C. Healthy long-legged peopleD. Weak individuals.15. How many steps may the researchers suggest senior citizens take each day?A. 4,400 steps.B. 10,000 steps.C. 2,700 steps.D. 7,500 steps.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
2019-2020学年太原师范学院附属中学高三生物第一次联考试卷及答案解析
2019-2020学年太原师范学院附属中学高三生物第一次联考试卷及答案解析一、选择题:本题共15小题,每小题2分,共30分。
每小题只有一个选项符合题目要求。
1. 下列关于糖类及“检测生物组织中的糖类”活动的叙述,正确的是()A.纤维素是植物细胞壁主要成分B.用斐林试剂检测葡萄糖时无需在热水浴中加热C.单糖可以进一步被水解成更简单的化合物D.甘蔗是用于还原糖鉴定的理想材料2. 关于生物组织中还原糖、脂肪和蛋白质三种有机物的检测实验中,以下说法正确的是()A.甘蔗、甜菜都含有较多的糖且近于无色,可以用于进行还原糖的检测实验B.检测脂肪的实验中必须使用显微镜进行观察C.可溶性还原糖的检测,可用酒精灯直接加热产生砖红色沉淀D.鸡蛋清含蛋白质多,是进行蛋白质检测的理想材料3. 我国小麦育种专家李振声将长穗偃麦草的抗病、高产等基因转移到普通小麦中,培育成了小麦二体异附加系(流程如下图所示)。
普通小麦6n=42,记为42W;长穗偃麦草2n=14,记为14E。
根据流程示意图判断,下列叙述错误的是()A. ①过程可用秋水仙素处理,得到纯合二倍体B. 丙染色体组成具有多样性与乙形成配子时7E随机分配有关C. 丁自交产生的子代中,含有2E的植株戊约占1/4D. 该育种过程依据的原理是基因重组和染色体变异4. 如图为人体内环境组成示意图,其中①~①表示相关液体。
有关叙述正确的是()A.①①①①共同组成细胞生存的液体环境B.细胞外液渗透压的90%以上来源于血浆蛋白C.长期营养不良血浆蛋白减少,会引起①渗透压升高D.手和脚有时会磨出“水泡”,其中的液体主要是组织液5. 现有抗病、黄果肉(ssrr)和易感病、红果肉(SSRR)两个番茄品种,研究人员欲通过杂交育种培育出一个既抗病又是红果肉的新品种(ssRR)。
下列叙述正确的是A.亲本杂交产生F1的过程中s和R发生了基因重组B.可以直接在F2中选出目标新品种进行推广C.此育种过程中产生了新的基因型D.也可利用F1经过花药离体培养后直接得到目标新品种6. 据报道,美国某法庭判决“酸碱体质理论”的提出者赔偿一名癌症患者1.05亿美元。
2019-2020学年太原师范学院附属中学高三生物第一次联考试卷及答案解析
2019-2020学年太原师范学院附属中学高三生物第一次联考试卷及答案解析一、选择题:本题共15小题,每小题2分,共30分。
每小题只有一个选项符合题目要求。
1. 如图为不同化学元素组成的化合物示意图,以下说法不正确的是()A.①不可能为几丁质B.若①大量积累于人和动物皮下和内脏器官周围,则①为脂肪C.若①为构成细胞膜的重要成分,则①为磷脂D.若①在低血糖时直接分解以补充血糖,则①可能是肌糖原和肝糖原2. 对某植物的胚芽鞘尖端进行如下图所示的处理,胚芽鞘中数据是一定时间后所测得的胚芽鞘向光侧和背光侧的3H-IAA百分比含量。
此实验可以得出的结论是()A. 单侧光能引起IAA的极性运输B.IAA可以从背光侧横向转移到向光侧C.IAA横向运输的方式很可能是自由扩散D.IAA通过韧皮部进行运输3. 在初级精母细胞中不可能出现的染色体行为是()A. 联会B. 交叉互换C. 同源染色体分离D. 着丝点分裂4. 下列对细胞内生物膜在结构上具有一定流动性的叙述中,错误的是()A.内质网通过“出芽”形成囊泡,囊泡与高尔基体膜融合B.细胞质中囊泡与核糖体膜融合C.细胞膜向内凹陷形成囊泡,离开细胞膜回到细胞质中融合D.高尔基体膜突出形成囊泡,离开高尔基体膜与细胞膜融合5. 用高倍镜观察比用低倍镜观察,看到的细胞数目、细胞大小和视野明暗情况依次为()A. 多、大、亮B. 少、小、暗C. 多、小、暗D. 少、大、暗6. 下列有关疫苗的叙述,错误的是A. 疫苗具有广普预防的功能,例如接种牛痘疫苗能预防天花病毒B. 疫苗通常用灭活或减毒病原体制成,能刺激机体产生相应的抗体和记忆细胞C. 疫苗可通过注射或口服进入人体,可以用来预防疾病D. 疫苗一般是一类接种后能激发人体免疫反应来抵抗某些传染病的生物制品7. 下列有关细胞膜的流动镶嵌模型的叙述,正确的是()A. 细胞膜上磷脂分子的疏水端朝向两侧,亲水端朝向内侧B. 细胞膜上的糖类全部都与蛋白质结合形成糖蛋白C. 细胞膜的流动性是细胞膜的功能特性D. 细胞膜上的糖蛋白与细胞表面的识别有关8. 若1个35S标记的大肠杆菌被1个32P标记的噬菌体侵染,裂解后释放的所有噬菌体A.一定有35S,其中有1个含有32PB.一定有35S,其中有2个含有32PC.一定有32P,其中有2个含有35SD.一定有32P,但不含35S9. 如图为某生态系统食物网简图,若E生物种群同化的总能量为8.1×109kJ,B生物种群同化的总能量为2.15×108kJ,从理论上计算,A同化的总能量最少为()A.8.1×107kJB.6.95×107kJC.5.95×107kJD.2.15×107kJ10. 生物大分子通常都有一定的分子结构规律,即是由一定的基本结构单位,按一定的排列顺序和连接方式形成的多聚体,下列表述正确的是()A.若该图为一段肽链的结构模式图,则1表示肽键,2表示中心碳原子,3的种类有20种B.若该图为一段RNA的结构模式图,则1表示核糖,2表示磷酸基团,3的种类有4种C.若该图为一段单链DNA的结构模式图,则1表示磷酸基团,2表示脱氧核糖,3的种类有4种D.若该图表示多糖的结构模式图,淀粉、纤维素和糖原是相同的11. 参与植物光合作用暗反应和有氧呼吸第二阶段必需的物质分别是()A.CO2、[H]、A TP;丙酮酸、水、ADPB.H2O、CO2、ADP;O2、葡萄糖、ADPC.H2O、CO2、ATP;CO2、水、A TPD.[H]、H2O、ADP;[H]、O2、ATP12. 真核细胞的增殖主要是通过有丝分裂来进行的。
2019-2020学年太原师范学院附属中学高三英语第一次联考试卷及答案
2019-2020学年太原师范学院附属中学高三英语第一次联考试卷及答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项ABob and Sue Harvey spent nine years as resident fellows in a dormitory at Sanford and in their bookVirtual Reality and The College Freshman, they write “The Freshman oftenfaces an identity problem during the first semester.” College is a more pressured environment than it used to be, in part because the academic gap between high school and college has increased. Many college freshmen have never had to make independent decisions about sex, drugs and alcohol. Most don’t know how to manage their time or money. They often feel lonely and overwhelmed, resulting in anxiety and depression.Nancy Corbin, director of clinical service for student-counseling (咨询) services at Iowa State University, says her office is seeing a significant increase in requests for counseling from freshmen who are having trouble making the adjustment to college life. She says older teenagers increasingly lack the skills to deal with personal problems that aren’t easily defined or fixed. And they get homesick but have a hard time admitting it.Parents and high schools can make things easier on freshmen by preparing them differently. For example, by teaching them to budget their hours and dollars. The Harveys think high schools should offer a college-life course. “Parents need to focus more on relationship and personal issues and less on how many sheets and towels to take,” they say. Many homesick freshmen think they’ll be regarded as failures if they come home before Thanksgiving. So parents can help by letting them know they’re welcome to return if they feel the need. In the meantime, parents have to find new ways to keep in touch with their college kids. One of the best ways is e-mail. It’s less unpleasant and less expensive than constant phone calls and is more likely to be answered than a handwritten letter.1. Why is the first semester difficult for freshmen in college?A. Because they often fail in exams.B. Because they lack time and money.C. Because they are too homesick to make new friends.D. Because they have to settle personal issues on their own.2. In the last paragraph, it is suggested that ________.A. parents should stop buying anything for their kidsB. parents should develop a good relationship with their kidsC. parents should be taught how to send e-mails to their kidsD. parents should work with high schools in college-life courses3. Which of the following might be the best title for the passage?A. Hard Life of College FreshmenB. Approaches to Trouble in CollegeC. Freshmen’s Adaptation ProblemsD. A Strange Phenomenon in CollegeBChimps use loud calls and gestures to make their feelings known but until now, the exact meaning for individual movements has remained a mystery. Now researchers believe they have translated the key gestures used in the chimp community and identified their intentions for the first time.From 4,351 gestures, experts were able to identify 66 that are used for 19 specific message meanings, including showing a foot to tell a child they can climb on their back. The researchers were able to narrow down these 66 gestures to 36 that are used intentionally to achieve 15 purposes. The translations were made by Dr Catherine Hobaiter and her colleagues at St Andrews University in Scotland.Dr Hobaiter used behavior sampling and filmed all recorded cases of gestural communication. Other gestures include stomping their feet to ask another chimp to stop what they are doing, and slapping objects together to ask another to follow them. Of the 19 meanings,17 encouraged interactions to start, or to develop, such as “move closer,” and “change play”. Some of the gestures were found to have more than one meaning. and only 10 of the 66 gestures were used for only a single meaning.Researchers collected a total of 471 video clips from two social groups of chimps at a shelter near Kinshasa, Democratic Republic of Congo. As well as identifying what the gesture means, they also discovered the technique needed to increase the chances of success.“Human children use gestures to communicate before they produce their first words, and their earliest gestures typically appear around 10 months of age,” explained the researchers. “In great apes, there is good evidence that language-trained individuals are capable of acquiring and understanding signals, but this is far less clear in their natural communication. ”4. Chimps slap the objects to____________.A. tell others to stop what they are doingB. ask others chimps to join themC. gather other chimps to move closerD. encourage interactions to start5. What did researchers find after studying 471 video clips?A. Chimps trained in language are good at understanding signals.B. Two social groups of chimps live at a shelter near Kinshasa.C. Language-trained individuals do well in natural communication.D. Chimps’earliest gestures appear around 10 months of age.6. How is the last paragraph developed?A. By analyzing causes.B. By examining differences.C By making comparisons. D. By following time order.7. What can be a suitable title for the text?A A New Research on Chimps B. Human Children and ChimpsC. Getting the Chimps Trained for LanguageD. Translating the Sign Language of ChimpsCWhen I was 13, I lost my sight. Since then, I had learned to get about with a walking stick, but had to stay at home because my parents thought I would get lost or robbed, even get hit by a car.I, however, believed I could regain my way if I lost it. A neighbor told me that a public library was offering a free course designed for the blind. That's an important opportunity for me to kill two birds with one stone: I could practice my getting — about skills on my way to learning practical technology. My parentssettled forit.But how would I plan my course? I knew that the blind singer Ray Charles, get around without a walking stick by counting steps. But I couldn't seem to do that the way he had. I developed the power of my imagination, catching the layout(布局)of places I visited and taking note of landmarks in my mind. Every time I visited a place, the mental map I'd drawn would turn up and helped me with the direction. But that doesn't mean I didn't lose my way in the process of acquiring this skill. I'd have to swallow(吞下)my pride to ask kind strangersfor help.On those days I lost my way, I'd go to bed feeling down. But my desires to beat blindness and further my education were usually enough to get me out of bed the next day and try again. Today, I'm a published reporter and audio producer.Yes, I've lost my way at times and found it again. And when people ask me,"Aren't you afraid to be out on your own?” the answer to me is clear:I'd rather risk and find happiness than stick to safety and be painful.Now, impressed by my progress, my father told my mother, "Our boy can see!".8. What does the underlined phrases “settled for" in the second paragraph mean?A. Talked about.B. Stuckto.C. Agreed to.D. Cared about.9. How did the author go around on his own after losing his sight?A.He created pictures of places in his mind.B. He drew a map on the paper to help him.C. He was always asking strangers for directions.D.He threw away the walking stick and counted steps.10. Which of the following can best describe the author?A. Determined and adventurous.B. Patient and intelligent.C. Warm-hearted and positive.D. Adventurous and outgoing.11. How did the author's parents feel about his progress?A.Concerned.B. Surprised.C. Confident.D. Proud.DIn the U. S., speaking more than one language fluently is not very common except in Los Angeles, California.The city has one of the largest population in the U. S. of young people between the ages of 18 and 34. This generation is often called millennials (新千年一代). More than half of millennials in Los Angeles are bilingual (双语的), which means they speak more than one language.Maria Elena Burgos is cooking a Mexican breakfast. She says making Mexican food is just one of the many traditions in her home. Another is speaking Spanish to her children.“We want them to be bilingual. We want to keep the Spanish somewhere in their learning too, not only at home.”When Ms Burgos first came to the United States from Mexico, she learned English. She knew her children would learn English quickly. So she wanted them to speak Spanish at home and study the language at school.She says being bilingual will give them more opportunities in the future. Knowing Spanish also means the children can talk with their s in Mexico.“When we had our children, one of the decisions we as parents made was to name them with a name that was easily pronounced in English and Spanish.”Elizabeth wants to know her family’s culture.” “The culture-to go back to our roots because that’s part of who we are.”Monica wants to pass on the culture to her children“It’s nice to know our culture and then to be able to pass it onto our children and grand-children and everyone to let them know where we come from.”And, Monica says she does not speak only English and Spanish. She has even learned some Korean in school.12. Which of the following is a tradition of Maria?A. Cooking breakfast for her s.B. Talking with her children in Spanish.C. Talking with her s in Spanish.D. Forcing her children to speak Spanish.13. What can be inferred from Monica’s words?A. She doesn’t care where she comes from.B. She looks forward to learning Spanish.C. Everyone should know his own culture.D. She doesn’t like American culture.14. Which of the following is mentioned about children speaking more languages?A. It can give children more chances in the future.B. It can make children feel proud before their friends.C. It can give the children a chance to go to a good college.D. It can let children go to the places where they want to go.15. What’s the main purpose of this passage?A. To entertain the readers with a funny story.B. To inform the readers of a shocking experiment result.C. To encourage more persons to learn a second language.D. To tell a truth that many people in Los Angeles are bilingual.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
2019-2020学年太原师范学院附属中学高三英语一模试卷及参考答案
2019-2020学年太原师范学院附属中学高三英语一模试卷及参考答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AEach year, theLas Vegasconsumer electronics show, or CES, presents the latest developments in many areas of technology. The newest products are designed to make our lives easier, fun and more productive.A car with legsOne of this year’s presentations was by South Korean carmaker Hyun-dai. The company introduced a small model of a “ walking car,” which is called Elevate. It has four movable legs that can raise the main part of the vehicle high off the ground. The electric-powered vehicle is designed to be used in search-and-rescue operations during emergencies or natural disasters.Changeable people moverGermany's Mercedes presented an experimental self-driving vehicle that it claims can revolutionize transportation for people and goods. The company says the vehicle, called Vision Urbanetic, will be able lo easily change bodies depending on its desired use. Mercedes says as a ride-sharing vehicle , the futuristic-looking car can seat 12 people.Fully electric HarleyAmerican manufacturer Harley-Davidson showed off its first fully electric motorcycle, called LiveWire. The company says the bike will be able to go 177 kilometers between charges. It can reach 96 kilometers per hour in under3.5 seconds. Although Harley is known for building powerful bikes with huge, loud motors, the LiveWire will be unusually quiet.Personal robotsOne of the new robots, called Temi, is really just a computer tablet on wheels. It is designed to be a personal electronic assistant. It moves around the home and performs commands when spoken to. It can link users to friends through voice or video, connect to video or place orders for food or goods.1. Which do you probably use to search for the injured in an earthquake?A. Elevate.B. Vision Urbanetic.C. LiveWire.D. Temi.2. What is the first fully electric motorcycle produced by Harley-Davidson?A. ElevateB. Hyun-daiC. LiveWire .D. Temi .3. Why are the four products designed?A. To ease traffic jam.B. To help us socialize.C. To improve our life.D. To protect the environment.BIf you've ever had a dog, you know just howdeep a connection you can develop with “man's best friend”. But a dog's life is much shorter than humans, about 12 to 15 years long, which means every dog owner has to go through the heartbreaking moment when their loving pet passes away.Why not make a clone of that dog then? This is the solution offered by a South Korean company, Sooam Biotech Research Foundation. The company has already successfully cloned at least 400 dogs, mostly for US customers, ever since it pioneered the technique in 2005. Now, Sooam Biotech has introduced its business toUKdog owners as well, offering them dogs that look just like their lost ones.To clone a dog, researchers first need to take a skin cell from a living dog or one that has just died. Meanwhile,another dog is selected to supply an egg. Researchers then replace the DNA in the egg with that from the skin cell and implant the egg into the womb (子宫) of a female dog. The egg grows into a puppy over the following two months. The whole process takes less than a day, but it comes at a shockingly high price — around £63,000.But if you can't afford it now, you can also save the cell in a laboratory andaccess it at a later date.However, magical as cloning might sound, there is no guarantee that the cloned dog will be a perfect copy of the original one. Just like identical twins of humans, they share the exactly same DNA but there will still be small differences between them. “The spots on a Dalmatian (斑点狗) clone will be different, for example” Insung Hwang, head of Sooam Biotech, told The Guardian.Dog owners will also have to accept the fact that personality is not “cloneable”. Apart from genes, personality is also determined by upbringing and environment, which are both random elements that cloning technologies simply cannot overcome, Professor Tom Kirkwood atNewcastle University,UK, told The Telegraph.Perhaps bringing our dogs back by cloning is not the best way to remember them after all.Kirkwood, a dog owner himself, pointed out, “An important aspect of our relationship with them is coming to terms with the pain of letting go.”4. What service does Sooam Biotech Research Foundation offer?A. Making copies of pet dogs.B. Giving pet dogs identical twinsC. Helping dogs give birth to more puppies.D.Helping dog owners love their dogs more.5. Which order is correct in the dog cloning process?a. An egg is taken from another dog.b. A skin cell is taken from the pet dog.c. The egg grows into a puppy in two months.d. The egg is placed in the womb of a female dog.e. The DNA in the egg is replaced by the DNA from the skin cell.A.a→d→b→e→c.B. a→e→b→d→cC. b→a→d→e→c.D. b→a→e→d→c.6. What can we learn about dog cloning from the passage?A. It has not been put into practice until recently.B. It is very popular among US andUKpet owners.C. It might not give the owners an exactlysame dog.D. It is very expensive and usually takes half a year to complete.7. What doesKirkwoodthink of dog cloning?A. He disagrees with it.B. He supports it.C. He is curious about it.D. He thinks it unbelievable.CEveryone can be angry. But if you take the time to actually examine your anger instead of just “feeling” angry, you’ll have a better understanding of yourself. Knowing why you feel so angry can provide you with some surprising answers. These answers can enable you to suddenly grow spiritually and mentally.I can give you a personal example. I went to a meeting once and I was verbally attacked over an application I supported at my workplace. Various people went on and on about how terrible this system was and that it never worked. That didn’t bother me that much. I was used to that but one of the comments that was said was, “Your job is pointless.” This really upset meand at the time, I was ly furious(发怒地) with that comment.I was so angry and upset that they would treat me that way. Once I took the time to think about what was really making me so mad. I learned a lot. I realized that the comment was more truethan I wanted to admit. In the big scheme of things, my job was pointless. It wasn’t what I really wanted to be doing with my life and this was what frustrated me the most. Here I was pouring part of my heart and soul into a job I didn’t even really want to do. I was using it as a crutch(拐杖) because I didn’t have the confidence in myself to take the scary road towardswhat I really wanted to do. As soon as I realized that, a lot of my anger just melted away. I also realized that I needed to start focusing on what I really wanted to do.I now consider this incident as a great gift It got me back on track to moving in the direction I wanted to go with my life. I probably wouldn’t be where I am today if I hadn’t taken the time to figure out why I was really so angry.8. What made the author angry at the meeting?A. The system of the company was terrible.B. Someone said his job is insignificant.C. The policy of the company didn’t work.D. The application he supported was of no effect.9. What brought down the anger of the author?A. The apology someone made at the meeting.B. The crutch he used to take the scary road.C. His awareness of the fact that the comment was true.D. The courage he had to overcome the challenges.10. Why did the author consider the incident as a gift?A. It brought him back on track to the goal.B. It helped him get promoted to a higher position.C. It helped him change his character since then.D. It provided him with confidence in his career.11. What can be the best title of the passage?A. How to Cope with Verbal Attack in a CompanyB. Avoid Being Pointless at WorkC. Anger Is Harmful to HealthD. Understanding Yourself Better Through AngerDJake Oldershaw and his daughter Mollie from Birmingham, Britain have asthma (哮喘). Mollie, 11, has required hospital treatment several times while Jake Says he always finds breathing more difficult when there is heavy traffic. Air quality has an enormous impact on their lives and both noticed a marked improvement during the spring lockdown because of the epidemic (疫情). Jake said, “During lockdown there was a noticeable difference in air quality. I didn't suffer any asthmatic attacks during that period. These days you can feel the effects.”However, under current COVID-19 restrictions in the UK this winter, many people probably will have to work from home. The Energy and Climate Intelligence Unit (ECIU) says while emissions (排放) have dropped this year because we've been travelling less and doing less, the expected use ofgas boilers to provide heating and hot water could rise by more than half.Heating accounts for nearly 37% of the UK's total carbon emissions. Modelling by the ECIU suggests a 56% increase in boiler usage this winter resulting in a 12% increase in emissions of carbon. The ECIU says that's enough to offset the last two years' worth of progress on reducing traffic emissions.Jess Ralston, author of the analysis for the ECIU, said, “Working from home and having increased gas use in the home could be really critical for air pollution and also climate change. The way we heat our homes needs to change if we are to get to net zero by 2050.”Jess Ralston said, “The increase in pollution from gas boilers expected this winter provides a graphic illustration (图解) of their forgotten role in air pollution. And it is a role set to continue without practical policies to decarbonize home heating. ”The government is set to publish its Heat and Buildings Decarbonisation Strategy in a few weeks which is expected to give details on plans to try to switch British homes to cleaner sources of heat.12. How did the spring lockdown in the UK affect Jake?A. He was cured of his asthma.B. He had to go to hospital for retreatment.C. He suffered a noticeable difficulty in study.D. He didn't suffer any asthmatic attacks during that period.13. What is concerning the Energy and Climate Intelligence Unit?A. The epidemic will become worse.B. Air pollution will get worse this winter.C. People may have to work from home longer.D. There is less energy for gas boilers in winter.14. What would Jess Ralston agree with?A. People prefer to work from home in winter.B. The government failed to protect the environment.C. People tend to ignore the harmful effect of home heating.D. The climate has suffered a lot from the epidemic this year.15. How to improve air quality during winter according to Jess Ralston?A. A warmer winter season.B. Less and less gas boilers.C. Practical plans from the government.D. Improved awareness of cutting down pollution.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
2019-2020学年太原师范学院附属中学高三生物第一次联考试题及答案
2019-2020学年太原师范学院附属中学高三生物第一次联考试题及答案一、选择题:本题共15小题,每小题2分,共30分。
每小题只有一个选项符合题目要求。
1. 下图表示种群特征之间的关系,据图分析不正确的是()A.①①①①依次为年龄组成、出生率死亡率和迁入率迁出率、种群数量、性别比例B.种群密度完全能反映①的变化趋势C.研究城市人口的变迁,迁入率和迁出率是不可忽视的D.种群数量还受自然气候等因素的影响2. 下列与生活相联系的生物学知识中,说法正确的是A.胆固醇是动物细胞膜的重要成分,参与血液中脂质的运输,过多摄入有益无害B.糖尿病患者的饮食虽然受到严格限制,但不具甜味的米饭、馒头等可随意食用C.鸡蛋煮熟后,蛋白质发生了变性,不容易被蛋白酶水解,因此,吃熟鸡蛋难消化D.患急性肠炎的病人脱水时,需要及时补水,同时也需要补充体内丢失的无机盐3. 用来鉴定生物组织中的蛋白质的试剂及其颜色反应是A. 苏丹①、红色B. 斐林试剂、砖红色C. 双缩脲试剂、紫色D. 苏丹①染液、橘黄色4. 现提供新配制的斐林试剂甲液(0.1 g/mL NaOH溶液)、乙液(0.05 g/mL CuSO4溶液)、蒸馏水,则充分利用上述试剂及必需的实验用具,能鉴别出下列哪些物质()①麦芽糖①蔗糖①胰岛素①脂肪A. 只有①B. ①和①C. ①和①D. ①、①和①5. 如图为一段DNA空间结构和平面结构示意图。
下列有关叙述正确的是()A.从图甲中可以看出DNA分子具有规则的双螺旋结构B.与图中碱基2通过2个氢键相配对的碱基是鸟嘌呤C.若该DNA分子一条链中A+T占36%,则该DNA分子中G占18%D.若一单链中(A+T)/(G+C)=n,则另一互补链中该比例为1/n6. 在叶绿体色素的提取和分离实验中,收集到的滤液绿色过浅,其原因可能是()①未加石英砂,研磨不充分①一次加入大量的无水酒精提取①分次加入少量无水酒精提取①使用放置数天的菠菜叶A. ①①①B. ①①①C. ①①①D. ①①①7. 青蒿素能有效杀死疟原虫(一类单细胞、寄生性的原生动物),其主要干扰疟原虫表膜线粒体的功能,阻断宿主红细胞为其提供营养,导致形成自噬泡,并不断排出虫体外,使疟原虫损失大量胞浆而死亡。
2019-2020学年山西省太原市师范学院实验中学高一数学理模拟试卷含解析
2019-2020学年山西省太原市师范学院实验中学高一数学理模拟试卷含解析一、选择题:本大题共10小题,每小题5分,共50分。
在每小题给出的四个选项中,只有是一个符合题目要求的1. 若a<b<0,则下列不等式中不成立的是()A、B、C、D、参考答案:B2. 若方程x2-2mx+4=0的两根满足一根大于1,一根小于1,则m的取值范围是().A.B.C.(-∞,-2)∪(2,+∞)D.参考答案:B3. 我国古代数学名著《数学九章》中有云:“今有木长二丈四尺,围之五尺.葛生其下,缠木两周,上与木齐,问葛长几何?”其意思为“圆木长2丈4尺,圆周为5尺,葛藤从圆木的底部开始向上生长,绕圆木两周,刚好顶部与圆木平齐,问葛藤最少长多少尺”(注:1丈等于10尺)()A.29尺B.24尺 C. 26尺D.30尺参考答案:C解析:由题意,圆柱的侧面展开图是矩形,一条直角边(即木棍的高)长24尺,另一条直角边长5×2=10(尺),因此葛藤长=26(尺).4. 已知函数,若,且,则()A. 2 B. 4 C.8 D.随值变化参考答案:A5. 的值为()A.0B.C.D.参考答案:C由余弦的两角差三角函数可知:,故选C.6. 设是三个互不重合的平面,是直线,给出下列命题:①若,则;②若,则;③若,则;④若,则。
其中正确的命题是()A.①② B.②③ C.②④ D.③④参考答案:D略7. 已知数列的前项和,若是等比数列,则的值为()A. B. C. D.参考答案:B略8. 如图,直角△ABC的斜边BC长为2,,且点B、C分别在x轴,y轴正半轴上滑动,点A在线段BC的右上方.设,(),记,,分别考察M、N的所有运算结果,则()A. M有最小值,N有最大值B. M有最大值,N有最小值C. M有最大值,N有最大值D. M有最小值,N有最小值参考答案:B【分析】设,用表示出,根据的取值范围,利用三角函数恒等变换化简,进而求得最值的情况.【详解】依题意,所以.设,则,所以,,所以,当时,取得最大值为.,所以,所以,当时,有最小值为.故选B.【点睛】本小题主要考查平面向量数量积的坐标运算,考查三角函数化简求值,考查化归与转化的数学思想方法,属于难题.9. (3分)函数f(x)=的定义域为M,g(x)=的定义域为N,则M∩N=()A.{x|x≥﹣2} B.{x|﹣2<x<2} C.{x|﹣2≤x<2} D.{x|x<2}参考答案:C考点:交集及其运算.专题:计算题.分析:通过求函数的定义域,求得集合M、N,再进行交集运算即可.解答:函数f(x)=的定义域为M={x|x<2};g(x)=的定义域为N={x|x≥﹣2},∴M∩N=[﹣2,2).故选C点评:本题考查交集及其运算.10. 定义在R上的偶函数满足:对任意的,有.则( )A. B.C. D.参考答案:A二、填空题:本大题共7小题,每小题4分,共28分11. 已知命题:“在等差数列中,若则为定值”为真命题,由于印刷问题,括号处的数模糊不清,可推得括号内的数为参考答案:1812. 如图所示几何体的三视图,则该几何体的表面积为.参考答案:16+2【考点】棱柱、棱锥、棱台的体积;由三视图求面积、体积.【分析】由已知中的三视图,可得该几何体是一个以俯视图为底面的四棱锥,代入锥体表面积公式,可得答案.【解答】解:由已知中的三视图,可得该几何体是一个以俯视图为底面的四棱锥,其直观图如下图所示:E和F分别是AB和CD中点,作EM⊥AD,连接PM,且PD=PC,由三视图得,PE⊥底面ABCD,AB=4,CD=2,PE═EF=2在直角三角形△PEF中,PF==2,在直角三角形△DEF中,DE==,同理在直角梯形ADEF中,AD=,根据△AED的面积相等得,×AD×ME=×AE×EF,解得ME=,∵PE⊥底面ABCD,EM⊥AD,∴PM⊥AD,PE⊥ME,在直角三角形△PME中,PM==,∴该四棱锥的表面积S=×(4+2)×2+×4×2+×2×2+2×××=16+2.故答案为:16+2.13. 等差数列前n项和为,已知,,则=_______.参考答案:4028略14. 计算可得▲.参考答案:19略15. 函数的最大值为______,此时x的值为______.参考答案:-3 2【分析】先将原式化为,再由基本不等式,即可求出结果.【详解】因为,又,所以,当且仅当时取等号;此时.即最大值为,此时.【解析】16. 函数在区间上是减函数,那么实数的取值范围.参考答案:17. 在平面直角坐标系xOy中,过点P(5,3)作直线与圆相交于A,B两点,若OA OB,则直线的斜率为___________参考答案:或1三、解答题:本大题共5小题,共72分。
2019-2020学年太原师范学校附属中学高三英语一模试卷及答案
2019-2020学年太原师范学校附属中学高三英语一模试卷及答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AThe following 4 famous paintings, from Jan van Eyck’s portrait to Pablo Picasso’s masterpiece, have stood the test of time.The Arnolfini PortraitJan van Eyck’s Arnolfini Portrait, an oil painting on wood produced in 1434, is undoubtedly one of the masterpieces in the National Gallery,London. This painting is as visually interesting as it is famed. It is also an informative document on fifteenth-century society, through van Eyck’s heavy use of symbolism-while husbands went out to engage in business, wives concerned themselves with domestic duties.The Starry NightVincent van Gogh painted The Starry Night, oil on canvas, a moderately abstract landscape painting of an expressive night sky over a small hillside village, during his 12-month stay at the mental hospital nearSaint-Remy-de-Provence,Francebetween 1889 and 1890. When theMuseumofModern ArtinNew York Citypurchased the painting from a private collector in 1941, it was not well known, but it has since become one of van Gogh's most famous works.The HarvestersThe Harvesters is an oil painting on wood completed by Pieter Bruegel the Elder in 1565. It depicts the harvest time which most commonly occurred within the months of August and September. Nicolaes Jonghelinck, a merchant banker and art collector fromAntwerp, commissioned this painting. The painting has been at the Metropolitan Museum of Art inNew York Citysince 1919.GuernicaGuernica,a large black-and-white oil painting, was painted by the Cubist Spanish painter, Pablo Picasso in 1937. The title ‘Guernica’ refers to the city that was bombed by Nazi planes during the Spanish Civil War. The painting depicts the horrors of war and as a result, has come to be an anti-war symbol and a reminder of the tragedies of war. Today, the painting is housed at the Museo National Centro de Arte ReinaSofiainMadrid.1. What do the four paintings have in common?A. They are oil paintings.B. They are kept inNew York.C. They show different people’s lives.D. They are created during 10th century to 19th century.2. What do we know about The Starry Night?A. It shows the scenery of a small hillside village.B. Van Gogh produced it when living in his home.C. A private collector gave it away to the museum.D. It was not famous before 1941.3. Whose painting shows the destruction of war?A. Jan van Eyck.B. Vincent van Gogh.C. Pieter Bruegel.D. Pablo Picasso.BIf you think you’d like to live on Mars, you may have that possibility by 2023. A Dutch company called Mars One will soon advertise for people interested in colonizing (开拓) Mars. Ifyou have all the necessary skills, you could be one of the first colonists. Are you ready for the challenge?You won’t have to pay for the mission to Mars. Mars One has already received money from some donors and is hoping to get more from TV viewers who will become interested in the show where all applicants have a debate for the rare chances.The main responsibility of the first colonists is to create an artificial environment on Mars where there is no air to breathe and no land to farm. Scientists know it’s quite possible because something similar has already been done inAntarctica.Another problem is that space travel to Mars takes nearly a year to get to Mars and the colonists will live the rest of their lives there. When a human lives in an environment without gravity or with low gravity for a long time, the systems in the body weaken. Luckily, spinning (旋转) the spaceship can create artificial gravity, and artificial gravity can ease these problems. It will also be difficult for Mars colonists to be far from home, living in small spaces, and seeing the same people over and over. Colonists with depression could put the mission in danger. Fortunately, a few years ago, a joint Russian and European project called the Mars500 Mission studied people’s reactions in a Mars-like environment. It is viewed as a great success because scientists were able to see how people handle emotional and physical stresses.Recent studies show that seven percent of people would want to go on such an adventure.Mars One will soon start accepting its first colonists. Are you interested?4. What do we know about the applicants to Mars from the first two paragraphs?A. They will land on Mars in 2023.B. They can get money from donors.C. They will compete in a TV show.D. They do not need special skills.5. What will the first colonists do to solve the basic living problems on Mars?A. Create earth-like conditions.B. Build labs inAntarctica.C. Spin the spaceship.D. Start the Mars500Mission.6. What can the life of the first colonists be like according to the passage?A. Difficult and dangerous.B. Different but adaptable.C. Challenging and unbearable .D. Acceptable but depressing.7. What’s the best title for the text?A. Mars: our final destination?B. Ready to be Mars’ colonists?C. Space travel: a thrilling adventure?D. Are you a qualified Mars astronaut?CAmerican football was the fastest-growing sport for US young players last year, according to a survey sponsored by the sport's governing body.But it was the game's no tackle variety that showed the biggest increase-a finding that may reflect concerns about injury. In American football, a tackle (抢断球) refers to an attempt to stop an opponent by forcing them to the ground.The number of participants in football grew in 2015 while most other sport, except baseball, posted a decline, USA Football said on Monday, citing(引用) the findings of a survey of 30,000 children and teenagers.Participation in flag football (a no-tackle type of football) increased by 8.7 percent among children aged 6 to 14, while tackle football rose by 1.9 percent. For that age group, the only other sport that grew was baseball, with a 3. 3 percent increase.In the 15-to-18 age group, flag football rose by 10. 5 percent, while tackle grew by 2.5 percent.Basketball was the third, with a 1. 1 percent increase. Participation in all other sports declined.Tom Farrey, executive director of the Aspen Institute's Sports & Society Program, said he was surprised that flag football participation rose so much.“The trend suggests that parents aremarching to the beat of a different drummer, in pursuing flagas an alternative for their kids," he said.The findings come at a time of increasing concern about the risk associated with youth sports, particularly hockey (曲棍球) and football, where medical researchers have warned about the risk of concussions (damagesto the brain caused by violent blows to the head) and death linked to brain injury.USA Football, anIndianapolis,Indianabased nonprofit funded in part by the National Football League, believed that the increases resulted from better safety and health education."Football participation increases, even modest increases, may signal that programs such as our Heads Up Football program and practice guidelines are making a positive difference," said Scot Hallenbeck, USA Football chief executive, in a statement.Robert Cantu, aBostonUniversityneurosurgery professor and investigator at the school's chronic Traumatic Encephalopathy (CTE) Center said the increase in fag football participation signaled that more parents were directing children to a safe alternative8. What can we learn about the two age groups?A. Flag football grew the fastest in the 6-to-18 group.B. Tackle football grew he fastest in the 6-to-14 group.C. Participation in baseball declined the most in both groupsD. Participation in tackle football increased the most in both groups.9. The underlined part probably means ________.A working at a different paceB. behaving in a different wayC. ignoring the major differencesD. trying to accept different opinions10. The popularity of flag football is inked with the fact thatA. its rules have been adapted for young playersB. it receives more funds than other varietiesC. tackle football is an old-fashioned gameD. experts worry about children's safety11. What is the cause of football growth according to USA Football?A. Their safety programs are successful.B. More children show interest in the game.C. Football is less likely to cause concussions.D. There are different types of football to choose from.DEven as Google plans to test its fleet (车队) of self-driving cars on public roads this summer, its business model remains abit of a mystery. By 2025, as many as 250,000 self-driving vehicles could be sold each year globally, according to a study by an industry research firm.“Vehicles that can take anyone from A to B at the push of a button could transform mobility for millions of people,” said Chris Urmson, director of Google’s self-driving car project. For now, Google has no plans to sell any of its self-driving cars. They are strictly for research. But they will hit public roads this summer near Google’s headquarters inMountain View,California. Previous testing has taken place only on closed courses.The cars are built to operate without a steering wheel, accelerator (油门) or brake pedal. “Our software and sensors do all the work,” Urmson said. “The vehicles will be very basic — we want to learn from them and adapt them as quickly as possible — but they will take you where you want to go at the push of a button.” The prototype (雏形) is the first of a 100-car fleet the tech giant is building.In the long run, Urmson sees a future of safer roads — the majority of auto accidents are caused by human error — and fewer traffic jams. Robotic cars could also shuttle people who can’t drive because of age or illness.Google has said that self-driving cars could launch new business models in which people buy the use of vehicles they don’t own. The company has already tested other types of self-driving cars on public streets, including modified Lexus sport-utility vehicles, under a special permit program by the California Department of Motor Vehicles that requires a human driver at the controls.The state has issued six other companies permits to operate such cars, includingDelphi, Mercedes-Benz, Volkswagen, Tesla, Bosch and Nissan. The vehicles that will be tested on open roads this summer will have removable steering wheels, accelerators and brake pedals to allow “safety drivers” to take control if needed.12. According to Chris Urmson, __________.A. self-driving cars can give driving orders to humansB. self-driving cars are specially designed for the elderlyC. software and sensors are vital for self-driving carsD. ordinary vehicles will be replaced by self-driving cars13. Paragraph 4 is meant to tell us that __________.A. many traffic accidents are caused by human errorB. some people can’t drive because of illness or ageC. Urmson has promised to create safer roads in the futureD. self-driving cars will probably help to make safer roads and decrease traffic jams14. The underlined word “issued” in the last paragraph can probably bereplaced by__________.A. givenB. claimedC. awardedD. prohibited15. What’s the author’s attitude towards self-driving cars?A. Objective.B. Indifferent.C. Subjective.D. Favorable.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
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19级高一2020年4月5日网上考试数学一、选择题(本大题共12小题,每小题5分,共60分.在每小题给出的四个选项中,只有一项是符合题目要求的)1.如图,角α的终边与单位圆交于点M ,M 的纵坐标为45,则cos α=( )A.35B.35C.45D. 45-【答案】B 【解析】 【分析】由题意设出M 的坐标,由M 到原点的距离为1求得M 的横坐标,再由任意角的三角函数定义得答案.【详解】由已知可设()4,05M x x ⎛⎫< ⎪⎝⎭, 再由22415x ⎛⎫+ ⎪⎭=⎝,得35x =-,∴3cos 5α=-, 故选:B .【点睛】本题主要考查任意角的三角函数的定义,是基础的计算题. 2.sin 750=( )A.12B. 12-3 D. 3 【答案】A 【解析】 【分析】利用诱导公式可求出sin 750的值.【详解】由题意可得()1sin 750sin 236030sin 302=⨯+==. 故选:A.【点睛】本题考查利用诱导公式求值,考查计算能力,属于基础题. 3.已知扇形的周长是10,圆心角是3弧度,则扇形的面积是( ) A. 6π B. 16πC. 6D. 16【答案】C 【解析】 【分析】由扇形周长求出半径,再由面积公式计算. 【详解】设半径为R ,则扇形弧长为102R -,∴1023R R -=,2R =,213262S =⨯⨯=. 故选:C .【点睛】本题考查扇形面积公式和弧长公式,属于基础题. 4.已知||1a =,||2b =且()a a b ⊥-,则a 与b 的夹角为( ) A.6π B.3πC.23π D.56π 【答案】B 【解析】 【分析】()a a b ⊥-,可得2()||10a a b a a b a b ⋅-=-⋅=-⋅=,根据cos ,||||a ba b a b ⋅〈〉=⋅,即可求得答案. 【详解】()a a b ⊥-∴2()||10a a b a a b a b ⋅-=-⋅=-⋅=得1a b ⋅= 又||1a =,||2b =∴1cos ,2||||a b a b a b ⋅〈〉==⋅,∴,3a b π〈〉=.故选:B【点睛】本题主要考查了根据向量数量积求向量夹角,解题关键是掌握向量数量积公式,考查了分析能力和计算能力,属于基础题.5.要得到函数sin 2y x =的图象,需将函数cos 24y x π⎛⎫=-⎪⎝⎭图象上所有的点( ) A. 向左平行移动4π个单位长度 B. 向右平行移动8π个单位长度 C. 向右平行移动4π个单位长度 D. 向左平行移动8π个单位长度 【答案】B 【解析】 【分析】cos 2sin 244y x x ππ⎛⎫⎛⎫=-=+ ⎪ ⎪⎝⎭⎝⎭,根据平移法则得到答案.【详解】cos 2sin 244y x x ππ⎛⎫⎛⎫=-=+ ⎪ ⎪⎝⎭⎝⎭,故要得到函数sin 2y x =图象,需将函数sin 24y x π⎛⎫=+⎪⎝⎭图象上所有的点向右平行移动8π个单位长度. 故选:B .【点睛】本题考查了三角函数平移,意在考查学生对于三角函数知识的灵活运用. 6.已知函数()sin()0,0,0||2f x A x A πωϕωϕ⎛⎫=+>><<⎪⎝⎭的部分图象如图所示,下述四个结论:①2ω=;②3πϕ=-;③12f x π⎛⎫+ ⎪⎝⎭是奇函数;④12f x π⎛⎫- ⎪⎝⎭是偶函数中,所有正确结论的编号是( )A. ①②B. ①③④C. ②④D. ①②④【答案】D 【解析】 【分析】根据图像的最值,周期,以及五点作图法,求得函数解析式,再对选项进行逐一分析即可. 【详解】由图可知,1A =,又函数周期2T ππω==,求得 2ω=根据五点作图法:206πϕ⨯+=,解得3πϕ=-故()sin 23f x x π⎛⎫=-⎪⎝⎭,所以①②正确; sin 2sin 2sin 212123636f x x x x ππππππ⎡⎤⎛⎫⎛⎫⎛⎫⎛⎫+=+-=+-=- ⎪ ⎪ ⎪ ⎪⎢⎥⎝⎭⎝⎭⎝⎭⎝⎭⎣⎦,此时函数不是奇函数,所以③错误;sin 2sin 2sin 2cos212123632f x x x x x ππππππ⎡⎤⎛⎫⎛⎫⎛⎫⎛⎫-=--=--=-=- ⎪ ⎪ ⎪ ⎪⎢⎥⎝⎭⎝⎭⎝⎭⎝⎭⎣⎦,故12f x π⎛⎫- ⎪⎝⎭为偶函数,所以④正确.综上所述,正确的有①②④. 故选:D.【点睛】本题考查由函数图像求三角函数解析式,以及三角函数的奇偶性;注意本题中求初相的方法.7.已知函数()cos 24f x x π⎛⎫=+⎪⎝⎭,将()y f x =的图象上所有的点的横坐标缩短为原来的12倍,纵坐标不变,再把所得的图象向右平移ϕ个单位长度,所得的图象关于原点对称,则ϕ的一个值是( )A.34π B.38π C.516π D.316π 【答案】D 【解析】【详解】将()y f x =的图象上所有的点的横坐标缩短为原来的12倍,纵坐标不变,可得函数π()cos 44f x x ⎛⎫=+ ⎪⎝⎭的图象;再把所得的图象向右平移||ϕ个单位长度,可得函数ππcos 4()cos 4444y x x ϕϕ⎡⎤⎛⎫=-+=+- ⎪⎢⎥⎣⎦⎝⎭的图象.结合所得的图象关于原点对称,可得ππ4π42k ϕ-=+,即ππ416k ϕ=--,k ∈Z ,当1k =-时,则ϕ的一个值是3π16.故选D . 8.1010cos sin ︒-︒4cos 10°=( )A. 1 23 D. 2【答案】C 【解析】 【分析】将原式通分,利用辅助角公式以及正弦的和角公式进行整理化简,即可求得. 【详解】原式()10230101022031031010cos sin cos sin sin sin sin ︒-︒-︒︒-︒︒====︒︒故选:C.【点睛】本题考查三角恒等变换,涉及辅助角公式和正弦的和角公式,属基础题. 9.阅读下列各式,其中正确的是( ) A. ()0a b b c b a c ⋅=⋅≠⇒= B. 00a b a ⋅=⇒=或0b = C. ()()a b c a b c ⋅⋅=⋅⋅D.()cos 180OA BO OA BO AOB ⋅=︒-∠【答案】D 【解析】 【分析】根据向量数量积的运算律对选项逐一分析,由此确定正确选项.【详解】对于A 选项,当b 与a 和c 都垂直时,满足()0a b b c b ⋅=⋅≠,但不一定有a c =,所以A 选项错误.对于B 选项,当b 与a 垂直时,0a b ⋅=,所以不能推出0a =0b =,所以B 选项错误. 对于C 选项,()a b c ⋅⋅的方向与c 有关,()a b c ⋅⋅的方向与a 有关,所以()a b c ⋅⋅与()a b c ⋅⋅不一定相等,故C 选项错误.对于D 选项,,180OA BO AOB =︒-∠,所以()cos 180OA BO OA BO AOB ⋅=︒-∠,故D 选项正确. 故选:D【点睛】本小题主要考查向量数量积的运算,属于基础题. 10.关于函数1()sin cos 362f x x x ππ⎛⎫⎛⎫=-+-⎪ ⎪⎝⎭⎝⎭,下列说法正确的是( ) A. 函数()f x 的最小正周期为2πB. 函数()f x 的最大值为1C. 函数()f x 的偶函数D. 函数()f x 的图像关于直线3x π=对称 【答案】D 【解析】 【分析】利用诱导公式及余弦函数的二倍角公式对()f x 进行化简可得()f x 1cos 223x π⎛⎫=+ ⎪⎝⎭,利用三角函数性质可判断奇偶性、周期、最值、对称轴.【详解】1()sin cos 362f x x x ππ⎛⎫⎛⎫=-+- ⎪ ⎪⎝⎭⎝⎭1sin cos 2662x x πππ⎡⎤⎛⎫⎛⎫=-+⋅+- ⎪ ⎪⎢⎥⎝⎭⎝⎭⎣⎦ 211cos cos cos 66262x x x πππ⎛⎫⎛⎫⎛⎫=+⋅+-=+- ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭11cos 2cos 22623x x ππ⎛⎫⎛⎫=+=+ ⎪ ⎪⎝⎭⎝⎭,∴函数()f x 的最小正周期T π=,且()f x 是非奇非偶函数,其最大值为12. ∵1211cos cos 323322f ππππ⎛⎫⎛⎫=+==-⎪ ⎪⎝⎭⎝⎭, ∴函数()f x 的图像关于直线3x π=对称.故选:D .【点睛】本题考查三角恒等变换及三角函数的性质,解题关键是三角函数和差公式、二倍角公式的灵活应用,对三角函数进行化简后利用三角函数性质即可求解,属于基础题. 11.函数())22sin 23cos sin f x x x x =-的图象为C ,如下结论中正确的是( )①图象C 关于直线1112x π=对称;②函数()f x 在区间5,1212ππ⎛⎫- ⎪⎝⎭内是增函数; ③图象C 关于点2,03π⎛⎫ ⎪⎝⎭对称;④由2sin 2y x =的图象向右平移3π个单位长度可以得到图象C A. ①③ B. ②③C. ①②③D. ①②【答案】C 【解析】 【分析】先通过三角公式将函数变形为()sin y A ωx φ=+的形式,①直接利用整体思想求出函数的对称轴方程,根据k 的取值求得结果. ②直接利用整体思想求出函数的单调区间,根据k 的取值求得结果. ③直接利用整体思想求出函数的对称中心,根据k 的取值求得结果. ④直接利用函数的平移变换求得结果.【详解】解:())22sin 23cos sin sin 2322sin 23f x x x x x x x π⎛⎫=-==-⎪⎝⎭①令:2()32x k k Z πππ-=+∈,解得:5()212k x k Z ππ=+∈, 当1k =时,图象C 关于直线1112x π=对称,所以①正确. ②令:222()232k x k k Z πππππ-≤-≤+∈,解得:5()1212k x k k Z ππππ-≤≤+∈,当0k =时,函数()f x 在区间5,1212ππ⎛⎫- ⎪⎝⎭内是增函数;所以②正确. ③令:2()3x k k Z ππ-=∈,解得:()26k x k Z ππ=+∈, 当1k =时,图象C 关于点2,03π⎛⎫ ⎪⎝⎭对称.所以③正确.④将sin(2)y x =的图象向右平移3π个单位,得到的函数解析式为2()sin 23g x x π⎛⎫=- ⎪⎝⎭,所以④错误. 故选:C.【点睛】本题考查的知识要点:正弦型三角函数的图象的应用,函数的对称轴,对称中心,函数的单调区间,函数的图象的平移变换,属于基础题型.12.已知向量OA 与OB 的夹角为θ,2OA =,1OB =,=OP tOA ,()1OQ t OB =-,PQ 在t t =0时取得最小值,则当0105t <<时,夹角θ的取值范围为( ) A. 0,3π⎛⎫⎪⎝⎭B. ,32ππ⎛⎫ ⎪⎝⎭C. 2,23ππ⎛⎫ ⎪⎝⎭D. 20,3π⎛⎫ ⎪⎝⎭【答案】C 【解析】 【分析】根据向量的数量积运算和向量的线性表示可得,()()22254cos 24cos 1PQ PQ t t θθ==+-++,根据二次函数的最值可得出012cos 54cos t θθ+=+,再由0105t <<,可求得夹角θ的取值范围.【详解】因为2cos OA OB θ⋅=,()1PQ OQ OP t OB tOA=-=--,()()22254cos 24cos 1PQ PQ t t θθ==+-++,∵PQ 在t t =0时取得最小值,所以012cos 54cos t θθ+=+,又0105t <<,则12cos 1054cos 5θθ+<<+,得1cos 02θ-<<,∵0θπ≤≤,所以223ππθ<<, 故选:C.【点睛】本题考查向量的数量积运算和向量的线性表示,以及二次函数的最值和分式不等式的求解,关键在于由向量的模的平方等于向量的平方,得到关于角度的三角函数的不等式,属于中档题.二、填空题(本大题共4小题,每小题5分,共20分.请将正确答案写在答题卡的相应位置) 13.若()3sin 323sin x x x ϕ=-,(),ϕππ∈-,则ϕ等于_____________. 【答案】6π【解析】 【分析】利用辅助角公式计算得到答案.【详解】()3sin 323236x x x x πϕ⎛⎫=-=- ⎪⎝⎭,故6π=ϕ 故答案为:6π. 【点睛】本题考查了辅助角公式,属于简单题.14.已知向量a ,b 满足||2a =,2b =,且()2a a b ⊥+,则b 在a 方向上的投影为_______. 【答案】-1 【解析】 【分析】利用向量的垂直关系,推出a b ⋅,然后求解b 在a 方向上的投影。