周练一
周周练一化学 Word版含答案
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高三化学周周练一可能用到的相对原子质量:Na-23 O-16 Cu-64 S-32 H-1 Mg-24 Al-27 N-14 C-12 Fe-56一、选择题(本大题共16小题,每小题只有一个选项符合题意。
每小题3分,共48分)1.化学与社会、生产、生活、环境密切相关,下列说法正确的是A.氯气可使品红溶液退色,因此氯气具有漂白性B.PM2.5主要来自化石燃料的燃烧,PM 2.5的大气一定能产生丁达尔现象C.铝热反应可用于焊接铁轨D. 高纯度的硅单质广泛用于制作光导纤维,光导纤维遇强碱会“断路”。
2. N A为阿伏加德罗常数的数值,下列说法中正确的是A.在密闭容器中加入1.5molH2和0.5molN2,充分反应后可得NH3分子数目为N AB.足量的铁粉与lmolCl2在加热条件下充分反应,转移的电子数为3N AC.标准状况下,等物质的量的N2和CO所含分子数均为N AD.7.8 g Na2O2中含有的离子总数目为0.3N A3.能正确表示下列反应的离子方程式是A.将0.2 mol·L-1的NH4Al(SO4)2溶液与0.3 mol·L-1的Ba(OH)2溶液等体积混合:2Al3++3SO42-+3Ba2++6OH-==2Al(OH)3↓+3BaSO4↓B.NH4HCO3溶液与足量Ba(OH)2溶液混合:HCO3-+Ba2++OH-==BaCO3↓+H2OC.硫酸亚铁溶液与稀硫酸、双氧水混合:Fe2++H2O2+2H+=Fe3++2H2OD.将大理石投入到足量盐酸中:CO32-+2H+=CO2↑+H2O4.下列离子或分子在溶液中能大量共存,通NO2后仍能大量共存的一组是A.K+、Na+、Br-、SiO32-B.H+、Fe2+、SO42-、Cl-C.K+、Ca2+、Cl-、NO3-D.K+、Al3+、NH3·H2O、NO3-5. 实验室需用480mL 0.1mol·L-1的硫酸铜溶液,以下操作正确的是A.称取7.68g硫酸铜,加入480mL水B.称取12.5g胆矾,配成,480mL溶液C.称取8.0g硫酸铜,加入500mL水D.称取12.5g胆矾,配成500mL溶液6.下列物质的转化在给定条件下能实现的是①Al2O3NaAlO2(aq ) Al(OH)3②S SO 3H2SO4③Fe2O3FeCl3(aq) 无水FeCl3④饱和NaCl(aq) NaHCO 3Na2CO3⑤MgCl2(aq) Mg(OH)2MgOA.①③⑤B.①④⑤C.②④⑤D.②③④7.如图装置,将溶液A逐滴加入固体B中,下列叙述中不正确的是A.若A为浓盐酸,B为MnO2,C中盛品红溶液,则C中溶液不褪色B.若A为醋酸溶液,B为贝壳,C中盛过量澄清石灰水,则C中溶液变浑浊C.若A为浓硫酸,B为Na2SO3固体,C中盛石蕊溶液,则C中溶液先变红后褪色D.若A为浓氨水,B为生石灰,C中盛AlCl3溶液,则C中产生白色沉淀89.下列关于物质的用途或变化,说法正确的是A.生产玻璃和水泥都要用到的原料是石灰石B.常温下,金属铝不被空气中的氧气氧化,因而能做导线C.二氧化硅属于硅酸盐材料,玻璃钢属于复合材料D.Al2O3熔点很高,可用作熔融NaOH的坩埚材料10.据《参考消息》报道,有科学家提出硅是“21世纪的能源”、“未来的石油”的观点。
2022-2023学年江西省赣州市赣县第三中学高二上学期周练一(A层)生物试题(Word版)
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赣州市赣县第三中学2022-2023学年高二上学期周练一(A层)生物试卷考试范围:一至三章;考试时间:50分钟一、单选题1.内环境稳态是机体进行正常生命活动的必要条件。
下列有关内环境与稳态的相关叙述,错误的是()A.NO、细胞因子、脂肪酸、尿素都属于内环境成分B.细胞外液的渗透压90%以上来源于Na+和Cl-C.汗液、泪液、消化液不属于细胞外液,也不属于体液D.内环境是各种生物的细胞与外界环境进行物质交换的媒介2.图中甲为红细胞,A、B、C参与人体内环境的组成。
下列分析错误的是()A.血浆蛋白含量减少会导致B中液体的量增多B.图中A代表组织液,可为甲提供氧气和养料C.A、B、C的pH稳态与内环境中的某些离子有关D.人体内的细胞与外界进行物质交换要通过内环境3.内环境稳态是机体进行正常生命活动的必要条件。
下列关于内环境稳态的说法中,正确的是()A.血液中积累大量的乳酸不会破坏内环境的稳态B.内环境的稳态只涉及温度、酸碱度和渗透压三个方面C.激素可调节内环境稳态,其含量相对稳定也是内环境稳态的一部分D.任何一种稳态的维持都必须有神经、体液和免疫调节同时参与4.下列关于人体内环境稳态的叙述,正确的是()A.各种离子的量在细胞外液和细胞内液之间趋于相等是稳态表现之一B.若一次性摄取了较多的水,则细胞外液的渗透压必定会明显下降C.正常人的血浆pH能保持相对稳定,与血浆中HCO3-/H2CO3等物质有关D.人体维持稳态的能力很强,外界环境剧变不会引起稳态失衡5.下列有关神经系统的基本结构的叙述,错误的是()A.大脑皮层是调节机体活动的最高级中枢B.脑神经和脊神经中均有支配内脏器官的神经C.外周神经系统不含有感觉神经和运动神经D.支配血管、内脏和腺体的运动神经属于自主神经系统6.某人因受外伤而成为“植物人”,处于完全昏迷状态,饮食只能靠“鼻饲”,人工向胃内注流食,呼吸和心跳正常。
请问他的中枢神经系统中,一定保持正常功能的部位是()A.脑干和脊髓B.小脑和脊髓C.小脑和脑干D.只有脊髓7.如图是神经元结构模式图,结合图示分析下列叙述错误的是()A.图中的②是神经元的细胞体B.图中的⑤是树突的末梢,可把信息传向其他神经元、肌肉或腺体C.图中信息的传导方向是③→②→④→⑤D.图中的⑥为髓鞘8.膝反射进行时,伸肌收缩的同时屈肌舒张。
高三数学周练一试题
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〔3分〕
设AC、PB夹角为 ,那么
又
又 〔5分〕
故 。∴异面直线AC、PB成角为arc .〔6分〕
〔2〕同法〔一〕可得PA=AC=BC时,求二面角C—PB—A的大
小.
〔8分〕
, ,
故取x=1,那么 .〔10分〕
④
其中所有正确命题的序号是.
三、解答题:本大题一一共6小题。一共70分,解容许写出文字说明,证明过程或者演算步骤.
17.〔本小题满分是10分〕
〔Ⅰ〕假如 ,求 的值;
〔Ⅱ〕假如 ,求 的取值范围.
18.〔本小题满分是12分〕
有A、B、C、D四个城,它们都有一个著名的旅游景点,依次记为a、b、c、d,现把A、B、C、D和a、b、c、d分别写成左、右两列,今有一名旅游爱好者随机用4条线段把左、右全部连接起来,构成“一一对应〞连对一根线得2分,连错一根得0分。
〔Ⅰ〕求数列{ }的通项公式;
〔Ⅱ〕在数列 中,仅 最小,求 的取值范围;
〔Ⅲ〕令函数 数列 满足 ,求证对一切n≥2的正整数都有 .
一高数学周清测试一参考答案
一.CDCACDDACCBD
二、13.25.14. 15. .16.①②④
17.解:〔Ⅰ〕
〔2分〕
平方得
〔4分〕
故 〔6分〕
〔Ⅱ〕
〔9分〕
. 〔11分〕
〔Ⅰ〕求连对2根线的概率;
〔Ⅱ〕求该旅游爱好者得分的分布列和数学期望。
19.〔本小题满分是12分〕
如图3,在三棱锥 中, 底面ABC,且 .
〔Ⅰ〕假如 .求异面直线AC与PB所成的角;
三年级下册阅读周练一 (2)
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一实校城南数学三年级下周练(1)
班级:姓名:
一、直接写得数
28×10=70×30=50×80=36×10=
50×8=40×90=30×30=16×50=
二、列竖式计算(带★的要验算)
51×47=58×32=28×88=
69×41=★26×62=★67×52=
三、解决问题
1.元宵节期间,社区一共有34个居住单元参加花灯展览,每个居住单元展出12盏花灯。
(根据竖式完成填空)
12
×34
48…()个居住单元展出()盏花灯36…()个居住单元展出()盏花灯
408…()个居住单元展出()盏花灯2.一页作文纸有21行,每行19个格子。
这一页大约有多少个格子?
3.“曹冲称象”的故事中,如果大象刚好与60筐石头一样重(筐大小一致),从中任意抽5筐,称得结果如下(单位:千克)。
这头大象大约重多少千克?
4.运动服专卖店购进一批运动服,每套卖64元,已经卖出18套,还剩31套,这批运动服一共能卖多少元?
四.能力提升
小明在做一道两位数乘两位数的题时,把第二个乘数26个位上的6看成了9,结果比正确的积多33。
正确的积应该是多少?第一
筐
第二筐第三筐第四筐第五筐4851495349。
人教版一年级上册数学周周练一
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满分:100分【基础练习】1. 数sh ǔ一yi数sh ǔ,连li án一yi连li án。
(20分)2. 比b ǐ一yi比b ǐ。
(10分) (1)在数量多的后面画“○”。
(2)在数量少的后面画“△”。
3. 看k àn图t ú圈qu ān 数sh ù字z ì。
(25分)4. 画hu à一yi画hu à。
(10分)(1)画□和☆同样多。
(2)画,比少。
☆☆☆☆☆☆_____________________________ _____________________________5. 数sh ǔ一yi数sh ǔ,每m ěi 种zh ǒn ɡ 事sh ì 物w ù的de数sh ù 量li àn ɡ 是sh ì几j ǐ,就ji ù在z ài 下xi à 面mi àn 画hu à几j ǐ个ɡè“○”。
(24分)【能力练习】6. 国ɡu ó 国ɡu ó 一y ī家ji ā三s ān 口k ǒu 分f ēn得d é 同t ón ɡ 样y àn ɡ 多du ō的de草c ǎo 莓m éi,他t ā们men 都d ōu 吃ch ī了le一y ī些xi ē,剩sh èn ɡ 下xi à的de草c ǎo 莓m éi如r ú下xi à图t ú,谁sh éi 吃ch ī的de草c ǎo 莓m éi 最zu ì 多du ō?在z ài( )里l ǐ画hu à“√”。
(11分)国国 爸爸 妈妈( ) ( ) ( )参考答案【基础练习】1. 数一数,连一连。
(20分)2. 比一比。
七年级数学下册周周练一作业新版华东师大版
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3.方程3x+6=2x-8移项后正确的是( C ) A.3x+2x=6-8 B.3x-2x=-8+6 C.3x-2x=-6-8 D.3x-2x=8-6
4.已知 x=2 是方程12 x+a=-1 的解,那么 a+5 的值是( C )
A.5 B.7 C.3 D.-1 5.如果 5m-7 与 4m+9 互为相反数,那么 m 的值为( B )
18.(8分)(2022·张家界)中国“最美扶贫高铁”之一的“张吉怀高铁”开通后, 张家界到怀化的运行时间由原来的3.5小时缩短至1小时,运行里程缩短了40千 米.已知高铁的平均速度比普通列车的平均速度每小时快200千米,求高铁的平均 速度.
解:设高铁的平均速度为x km/h,则普通列车的平均速度为(x-200)km/h,由 题意,得x+40=3.5(x-200),解得x=296,答:高铁的平均速度为296 km/h
若选小新的方法:设快递员所行驶的总路程为x km.根据题意, 得1x.2 +10=0x.8 -5,解得 x=36,∴1x.2 +10=40(min). 答:规定时间为40 min,快递员所行驶的总路程为36 km
b d
,
定义ac
b d
=ad-bc,上述记号就叫做 2 阶行列式.若23x+1
x-1
-2
=6,
则 x=_-__57___.
14.(2022·牡丹江)某商品的进价为每件10元,若按标价打八折售出后,每件可 获利2元,则该商品的标价为每件__1_5_元.
15.某件商品把进价提高后标价为220元,为了吸引顾客再按九折出售,这件 商品仍能获利10%,则这件商品的进价为_1_8_0_元__.
A.14 B.15 C.16 D.17
二、填空题(每小题4分,共24分) 10.若(m+4)x|m|-3=3是关于x的一元一次方程,则m=__4__. 11.(重庆中考)方程2(x-3)=6的解是__x_=__6. 12.已知|x+3|+(x+2y-1)2=0,则2x-y=_-__8_.
高考文言文周周练一(1——4)参考答案
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高考文言文周周练一参考答案一、13.(1)铁马秋风大散关(2)鱼翔浅底,万类霜天竞自由(3)年年知为谁生(4)长风破浪会有时(5)君子成人之美(6)失道者寡助(7)匹夫有责(任选5空,句中有错别字或缺漏,则该句不得分。
共5分。
)二、14.《阿房宫赋》(1分) 15.雄伟奢华;寂寥清冷。
(意思正确即可,2分。
) 16.杜牧的作品重在隐射唐朝统治者穷奢极欲的生活,而崔橹的诗则表现出一种对世事沧桑、物是人非的感慨。
(4分,意思完整正确,语言通顺即给满分。
) 。
三、17.(1)遵循,遵从(2)得……的病(3)就(4)大概(每个解释1分,共4分。
) 18.心胃痛。
(2分)19.(1)原来以行医为业,买卖药材。
(3分,译出大意给1分,评分要点:故、业、货。
)(2)又不去追究到底是虚症还是实症,这样的(医生)不妨害病人的性命(的情形)是不多的。
(3分,译出大意给分,评分要点:求、几何、误。
)20.没有弄清病因,胡乱用药。
(2分)21.例子恰当1分,分析正确2分,共3分。
参考译文:心胃疼痛这个症状,在《黄帝内经》中条目很多,前辈名医们,总共把它归纳为九种病的症状,非常的详细。
现在我借鉴并遵从古人们的那些著作,编成了虚实分明的口诀,可以说没有什么遗漏掉的内容。
我记得邻村有个叫王维藩的医生,是我同宗的弟弟秀才王丹文的表叔,以前行医卖药的时候,邻居有个妇女胃痛请王维藩来治,王维藩用海上方里记载的失笑散,那妇女吃了以后就见效了。
往后只要有心胃疼痛的人,王维藩都是用失笑散给他们治疗,有效无效的各占一半。
王维藩素常吸洋烟,有一天感到自己胃痛,也自己拿出失笑散来吃,痛得更加厉害了,到半夜里胃痛得好像要裂开一样,痛得他敲打枕头床铺,天没亮就静静地死去了。
我根据失笑散是驱淤血的药物来分析,王维藩的女邻居一定是因为淤血化不开引起的胃痛,所以吃了失笑散就见效。
除了淤血以外,伤风感冒中暑、吃喝时造成的胃气凝聚,都能导致胃痛,如果全部胃痛的都用失笑散来治疗,而不探求胃痛的真正原因,怎么能不伤害别人的性命呢?王维藩用失笑散给人治胃痛不知导致了多少人死亡,所以他自己也死在失笑散这味药上,可以说是冥冥之中的报应了。
四川省绵阳2024-2025学年高三上学期数学周练一含答案
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绵阳高2022级数学周练一(答案在最后)时间:120分钟总分:150分一、单项选择题:本题共8小题,每小题5分,共40分。
1.设函数y =M ,集合{}2|,N y y x x R ==∈,则M N ⋂等于()A.∅B.NC.[)1,+∞ D.M2.已知数列{}n a 满足11a =,12,3,n n n a n a a n ++⎧=⎨+⎩为偶数为奇数,若21n n b a -=,则4b =()A.18B.16C.11D.63.下列说法错误的是()A.命题:p x ∃∈R ,210x x ++<,则:p x ⌝∀∈R ,210x x ++≥B.已知a ,b ∈R ,“1a >且1b >”是“1ab >”的充分不必要条件C.“1x =”是“2320x x -+=”的充要条件D.若p 是q 的充分不必要条件,则q 是p 的必要不充分条件4.在某病毒疫苗的研发过程中,需要利用基因编辑小鼠进行动物实验.现随机抽取100只基因编辑小鼠对该病毒疫苗进行实验,得到如下22⨯列联表(部分数据缺失):被某病毒感染未被某病毒感染合计注射疫苗1050未注射疫苗3050合计30100计算可知,根据小概率值α=________的独立性检验,分析“给基因编辑小鼠注射该种疫苗能起到预防该病毒感染的效果”()附:()()()()()22n ad bc a b c d a c b d χ-=++++,n a b c d =+++.α0.10.050.010.0050.0012.7063.8416.6357.87910.828A.0.001B.0.05C.0.01D.0.0055.存在函数()f x 满足:对任意x ∈R 都有()A.()1f x x x=+B.()21f x x +=C.()21f x x =+ D.()221f x x x +=+6.函数()ln f x x x =,正确的命题是()A.值域为RB.在(1,+)∞上是增函数C.()f x 有两个不同零点D.过(1,0)点的切线有两条7.已知三次函数无极值点,则的取值范围是()A.m<2或m>4B.m ≥2或m ≤4C.[2,4]D.(2,4)8.已知0a >,设函数()21,0e ,0x x ax xf x ax x ⎧++≤=⎨->⎩,若存在0x ,使得()0f x a <,则a 的取值范围是()A.()0,222- B.()()0,2221,-+∞ C.()1,+∞ D.()22,-+∞二、多项选择题:本题共3小题,每小题6分,共18分。
高三化学周练一参考答案
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蓝天家教网 伴您快乐成长高三化学周练一参考答案一、选择题(2)略(3)氯气腐蚀橡皮管(4)将U型管放在冰水浴中。
2HCl+Ca(OH)2=CaCl2+2H2O 发生装置和U型管之间放饱和氯化钠溶液16.(1)4mol/L,溶液的密度(2)2NaClO3+SO2+H2SO4=2ClO2+2NaHSO4 B(3)A(4)连续测定溶液的PH值(5)BED(6)重结晶17.(1)四VIIA(2)可防止氯气、溴与水反应(3)SO2+Br2+2H2O=4H++SO42-+2Br-(4)温度高,水也被蒸出;温度低,溴不能完全蒸出(5)分液漏斗下口(6)直接蒸馏,海水中溴的浓度低,成本高18.(1)淀粉(2)Fe3I8+4K2CO3=8KI+4CO2+Fe3O4(3)过氧化氢是绿色氧化剂,不产生污染,且不会使生成的I2进一步被氧化。
(4)萃取(5)蒸馏烧瓶、温度计、冷凝管(6)IO3-+5I-+6H+=3I2+3H2O19.(1)3Br2+6NaOH=5NaBr+NaBrO3+3H2O(2)NH4++Al3++5OH-=NH3+AlO2-+3H2ONH4++Al3++2SO42-+2Ba2++5OH-=NH3+AlO2-+2BaSO4+3H2O(3)NH2Cl+H2O=HClO+NH3(4)26HClO3=10HClO4+15O2+8Cl2+8H2O(5)2KClO3+4HCl=2KCl+2ClO2+Cl2+2H2O高温20.2C+SnO2====Sn+2CO Sn2++2e=Sn△(1)MnO2+4HCl(浓)===MnCl2+Cl2+2H2O(2)B 反应放热,使锡熔化(3)少温度计连一个装有碱石灰的干燥管(4)在A和B 之间依次连接装有饱和食盐水和浓硫酸的洗气瓶21.(1)ClFO4(2)F2+HClO4=ClFO4+HF(3)吸收氟化氢(4)液氧提供的低温使X成为固体,便于X的分离(5)增大氟气和高氯酸的接触面积(6)石墨与高氯酸反应22.(1)次氯酸钙或氯酸钾(2)2.5mol/L(3)5mol/L 偏高。
周练一(电压及其规律)
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周练一测试内容:电压、探究串并联电路中的电压规律一、选择题(每小题4分,共44分)1. 下列关于电压与电流的说法中,正确的是( ) A.因为导体中有大量的自由电荷,所以只要使导体构成通路,导体中就有电流B.电路中只要有电压,就会有电流,因为电压是形成电流的原因C.电压是形成电流的原因D.以上说法都正确2. 以下关于电压表使用的说法中错误的是()A.电压表必须与待测电路并联B.在测量时要试触,试触时先用较大量程,如偏转角度小于1/5,再用较小量程C.电压表的“+、—”极接法要正确D.被测电路电压不得超过电压表量程3. 小张家的卫生间按如图所示的电路安装了照明灯和换气扇,它们()A.只能各自独立工作,而不能同时工作B.只能同时工作,而不能各自独立工作C.工作时通过的电流一定相等D.工作时两端的电压一定相等4.在所示的电路中,闭合开关S,能用电压表测量L1两端电压的正确电路是()5.如图5所示的电路,合上开关,小灯泡正常发光若将小灯泡和电流表的位置互换,则合上开关后的现象是A.小灯泡不发光B.小灯泡会烧坏C.小灯泡仍正常发光D.电压表和电流表都没有示数6.在如图3所示的电路中,当闭合开关S后,发现两灯都不亮,电流表的指针几乎指在零刻度线不动,电压表指针则有明显偏转,该电路中的故障可能是A.灯泡L2短路B.灯泡L2断路C.灯泡L1断路D.两个灯泡都断路7. 现将三节新干电池串联,仅有实验室用的电流表和电压表各一只,以下说法正确的是()A.接电压表的小量程,可以测出三节干电池的电压B.接电流表的小量程,可以测出三节干电池的电流C.接电压表的大量程,可以测出三节干电池的电压D.接电流表的大量程,可以测出三节干电池的电流8.如图所示的电路中,电压表所用的量程不明,当电路闭合后,V1和V2的示数分别如图所示.则小灯泡L1上的电压为()A.6VB. 3.5VC. 2.5VD.1.1V9.毛刚同学按如图所示的电路进行实验,得到下列的实验数据.以下说法不正确的是:()A.由图可知,L1、L2连接方式是串联B.由表中的实验数据中A1、A2的示数可得出串联电路电流处处相等C.由表中的实验数据V1、V2的示数可知,串联电路中电压处处相等D. 由表中的实验数据V3的示数可知,电源电压为9伏10. 如图,电源电压恒定,当开关S1闭合、S2断开时,电压表的示数为3 V;当S1断开S2闭合时,电压表的示数为4.5V,则灯L1和L2两端的电压分别为()A.3 V 4.5V B.3 V 1.5VC.1.5 V 3V D.1.5 V 1.5V11.关于电压表和电流表的说法正确的是( )A.电压表在电路中相当于导线,电流表相当于断开的开关B.电压表和电流表都要与被测部分电路并联C.使用电压表和电流表时都要注意电流的方向D.电流表和电压表都可以直接接在电源两极二、填空题(每空2分,共22分)12. 小刘在学习电学知识时,在老师的引导下,联想到如图所示的力学实验现象.进行比较并找出相类似的规律.例如:水压使水管中形成水流;类似地,电压使电路中形成;抽水机是提供水压的装置;类似地,电源是提供的装置。
高三数学 周练一
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高三数学 周练一第I 卷(选择题)一、选择题(共10题,每题5分,共50分)1.已知i 是虚数单位,( ) A .1-2i B .2-i C .2+i D .1+2i2(a ,b ∈R ,i 为虚数单位),则2a b -=( ) A. 1 B. 2 C. 3 D.43 ) A .第一象限 B .第二象限 C .第三象限D .第四象限4.若sin 211)i θθ-++是纯虚数(其中i 是虚数单位),且[0,2)θπ∈,则θ的值是( )A 、4π B 、34π C 、54π D 、544ππ或5.观察式子:111 ,则可归纳出一般式子为( )A .1 (n≥2)B .1 (n≥2)C .1 (n≥2)D .1 (n≥2) 6.有一段演绎推理是这样的:“直线平行于平面,则平行于平面内所有直线;已知直线b ⊆/平面α,直线⊂a 平面α,直线b ∥平面α,则直线b ∥直线a ”的结论显然是错误的,这是因为 ( )A.大前提错误B.小前提错误C.推理形式错误D.非以上错误7.用反证法证明命题:“一个三角形中不能有两个直角”的过程归纳为以下三个步骤: ①9090180A B C C ++=︒+︒+>︒,这与三角形内角和为180︒相矛盾,90A B ==︒不成立;②所以一个三角形中不能有两个直角;③假设三角形的三个内角A 、B 、C 中有两个直角,不妨设90A B ==︒,正确顺序的序号为( )A .①②③B .③①②C .①③②D .②③① 8.把正奇数数列按第一个括号一个数,第二个括号两个数,第三个括号三个数,第四个括号一个数,第五个括号两个数,第六个括号三个数, .依次划分为)1(,)5,3(,)11,9,7(,)13(,)17,15(,)23,21,19(,)25(, .则第50个括号内各数之和为( )A .396B .394C .392D .3909.已知,xy 满足不等式组22y xx y x ≤⎧⎪+≥⎨⎪≤⎩,则2z x y =+的最大值除以最小值等于( )A 、2 C 10.设,若a ,1,b 成等比数列,且c ,1,d 成等差数列,则下列不等式恒成立的是( )A 、B 、C 、D 、第II 卷(非选择题)二、填空题(每题5分,共4题,共20分)11.在复平面内,复数)(1R a i ai ∈+对应的点位于虚轴上,则=a 12.类比平面内 “垂直于同一条直线的两条直线互相平行”的性质,可推出空间下列结论:①垂直于同一条直线的两条直线互相平行;②垂直于同一个平面的两条直线互相平行;③垂直于同一条直线的两个平面互相平行;④垂直于同一个平面的两个平面互相平行.则正确结论的序号是13.若曲线4y x =的一条切线l 与直线480x y +-=垂直,则l 的方程为________。
高三语文周练一
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高三语文周练一一、语文基础知识(共12分,共4小题,每小题3分)1.下列各组词语中加点的字,读音全都相同的一组是(B )A、应.届饮.马荧.光屏心心相印.B、瓦菲.绯.红皇贵妃.雨雪霏.霏C、裨.将复辟.庇.护权麻痹.大意D、招徕.青睐.赏赉.钱万籁.俱寂2.下列各组词语中,没有错别字的一组是( D )A、跳槽租凭权醍醐灌顶树倒猢狲散B、谍血协奏曲骨鲠在喉时世造英雄C、寒喧副食品陨身不恤不落于言筌D、辖制银镯子起承转合家书抵万金3、下列各项中,没有语病的一项是( C )A、专家提出:许多国家在调整退休年龄时都要预先若干年向社会公告,对不同群体采取差别政策,并以“小步慢走”实施,以减少负面影响。
B、绿草如茵的平原、枝繁叶茂的大树、蜿蜒流淌的清泉、乡间小屋用花草精心装饰、时隐时现的丛林……阴霾的清晨,达西先生走出自己美丽的庄园,走向伊丽莎白的家。
C、台湾地区25日就钓鱼岛事件发表看法,认为相关各方应搁置争议,基于平等互惠原则,共同开发、享用资源,以维护该地区的和平稳定。
D、厦门大学艺术学院老师介绍说,厦门大学在新学期准备开设“爬树课”,是借鉴了美国、新加坡、台湾部分大学经验开设的生存训练课;爬树,意在锻炼学生的体能。
4、、加点的成语使用正确的一项是( D )A、他在地主家当长工的时候,吃的是粗茶淡饭....,住的是猪棚狗窝,干的是牛马活儿。
B、他是我最真诚的朋友,经常对我耳提面命....,使我能在工作中少犯许多错误。
C、遇到不明白的地方,他就及时向老师请教,非要弄个水落石出....才满意。
D、中国女排在先失两局的情况下,第三局破釜沉舟....,调上全部精锐人马,拼力反击,终于反败为胜。
二、阅读下面的文言文,完成5至8题。
(19分)传是楼记〔清〕汪琬昆山徐健庵先生,筑楼于所居之后,凡七楹。
间命工木为橱,贮书若干万卷,区为经史子集四种,经则传注义疏之书附焉,史则日录家乘山经野史之书附焉,子则附以卜筮医药之书,集则附以乐府诗余之书,凡为橱者七十有二,部居类汇,各以其次,素标缃帙①,启钥灿然。
一年级上册语文周周练一
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一、看k àn 图t ú 写xi ě 字z ì。
(每字3分,共12分)1. 朵花。
❀❀❀ 2. 颗心。
♥3. 个五角星。
☆☆。
4.下 ↑ ↓二、连li án 一yi 连li án 。
(每题4分,共16分)① ② ③ ④口 目 耳 手三、按àn 照zh ào 要y āo 求qi ú 完w án 成ch én ɡ 练li àn 习x í。
(33分)1.“耳”的笔顺是:_______________________________,共( )画。
2.“口”的笔顺是:_______________________________,共( )画。
3.“手”共( )画,第一画是___________________。
4.“目”的笔顺是:____________________________________,共( )画。
5.我能写出一个带有“丨”笔画的字:6.我能写出带有“亅”笔画的字:① ② ③④ ①7.我能写出带有“丿”笔画的字:四、根ɡēn 据j ù 课k è 文w én 内n èi 容r ón ɡ,选xu ǎn 出ch ū 对du ì 应y ìn ɡ 的de 生sh ēn ɡ字z ì。
(填ti án 序x ù 号h ào )(12分) ①地 ②火 ③月 ④古 ⑤坐 ⑥卧1.行( ) 站( )2.今( ) 水( )3.日( ) 天( )五、先xi ān 将ji ān ɡ 课k è 文w én 补b ǔ 充ch ōn ɡ 完w án 整zh ěn ɡ,再z ài 按àn 照zh ào 顺sh ùn 序x ù 排p ái 序x ù。
高一物理必修2周练一
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茶陵一中高一物理周练(一)一、单项选择题1.下列说法中正确的是 ( )A 曲线运动一定是变速运动B 变速运动一定是曲线运动C 匀速圆周运动是速度不变的运动D 加速度恒定的运动一定是直线运动2、关于运动合成的下列说法中正确的是A 、合速度的大小一定比每个分速度的大小都大;B 、合运动的时间等于两个分运动经历的时间之和;C 、两个速率不相等的匀速直线运动的合运动一定也是匀速直线运动;D 、只要两个分运动是直线运动,合运动一定也是直线运动.3、一条河宽100m ,水流的速度为3m/s 。
一条船在静水中的速度为5m/s ,关于船过河的过程,下列说法正确的是A . 船过河的最短时间是20sB . 船要垂直河岸过河需用20s 的时间C . 船不可能垂直河岸过河D . 船以最短时间过河,刚好到达正对岸二、多项选择题4、一个物体以初速度v 0水平抛出,落地时速度为v ,则( )A 、物体在空中运动的时间是 g v v /)(0-B 、物体在空中运动的时间是g v v /202-C 、物体抛出时的竖直高度是g v 2/2D 、物体抛出时的竖直高度是g v v 2/)(202-5、图为一皮带传动装置,右轮半径为r ,a 为它边缘上一点;左侧是一轮轴,大轮半径为4r ,小轮半径为2r ,b 点在小轮上,到小轮中心的距离为r 。
c 点和d 点分别位于小轮和大轮的边缘上。
若传动过程中皮带不打滑,则( )A 、a 点和b 点的线速度大小相等B 、a 点和b 点的角速度大小相等C 、a 点和c 点的线速度大小相等D 、a 点和d 点的向心加速度大小相等6、用长为L 的细线拴一质量为m 的小球,使小球在水平面内做匀速圆周运动,细线与竖直方向平角为θ,如图所示。
下列各值正确的是( )A .小球的线速度θsin gL v =B .细线的拉力为F T =mg ·cos θC .细线的拉力为F T =mg/cos θD .小球的线速度θθ2sin cos gL v =7、从45m高处平抛一物体,当抛出2s后它的速度方向与水平方向成45°角,(g取10m/s2)求:(1)求物体在空中运动的时间(2)抛出时的初速度;(3)落地时的水平射程。
上海复旦附中2024学年高三年级第二学期数学试题周练一(含附加题)
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上海复旦附中2024学年高三年级第二学期数学试题周练一(含附加题)注意事项1.考试结束后,请将本试卷和答题卡一并交回.2.答题前,请务必将自己的姓名、准考证号用0.5毫米黑色墨水的签字笔填写在试卷及答题卡的规定位置. 3.请认真核对监考员在答题卡上所粘贴的条形码上的姓名、准考证号与本人是否相符.4.作答选择题,必须用2B 铅笔将答题卡上对应选项的方框涂满、涂黑;如需改动,请用橡皮擦干净后,再选涂其他答案.作答非选择题,必须用05毫米黑色墨水的签字笔在答题卡上的指定位置作答,在其他位置作答一律无效. 5.如需作图,须用2B 铅笔绘、写清楚,线条、符号等须加黑、加粗.一、选择题:本题共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.如图所示,已知某几何体的三视图及其尺寸(单位:cm ),则该几何体的表面积为( )A .15π2cmB .21π2cmC .24π2cmD .33π2cm2.抛掷一枚质地均匀的硬币,每次正反面出现的概率相同,连续抛掷5次,至少连续出现3次正面朝上的概率是( ) A .14B .13C .532D .3163.已知函数f (x )=223,1ln ,1x x x x x ⎧--+≤⎨>⎩,若关于x 的方程f (x )=kx -12恰有4个不相等的实数根,则实数k 的取值范围是( ) A .1e 2⎛⎝ B .12e ⎡⎢⎣C .12e ⎛⎝⎦D .12e ⎛⎝⎭4.已知函数()()sin f x A x =+ωϕ(其中0A >,0>ω,0ϕπ<<)的图象关于点5,012M π⎛⎫⎪⎝⎭成中心对称,且与点M 相邻的一个最低点为2,33N π⎛⎫- ⎪⎝⎭,则对于下列判断: ①直线2x π=是函数()f x 图象的一条对称轴;②点,012π⎛⎫-⎪⎝⎭是函数()f x 的一个对称中心; ③函数1y =与()351212y f x x ππ⎛⎫=-≤≤⎪⎝⎭的图象的所有交点的横坐标之和为7π. 其中正确的判断是( ) A .①②B .①③C .②③D .①②③5.在ABC ∆中,a ,b ,c 分别为角A ,B ,C 的对边,若ABC ∆的面为S ,且()2243S a b c =+-,则sin 4C π⎛⎫+= ⎪⎝⎭( ) A .1B .22C .624- D .624+ 6.中国古代数学著作《算法统宗》中有这样一个问题;“三百七十八里关,初行健步不为难,次后脚痛递减半,六朝才得到其关,要见每朝行里数,请公仔细算相还.”其意思为:“有一个人走了378里路,第一天健步走行,从第二天起脚痛每天走的路程是前一天的一半,走了6天后到达目的地,求该人每天走的路程.”由这个描述请算出这人第四天走的路程为( ) A .6里B .12里C .24里D .48里7.已知函数()f x 的导函数为()f x ',记()()1f x f x '=,()()21f x f x '=,…,()()1n n f x f x +'=(n ∈N *). 若()sin f x x x =,则()()20192021f x f x += ( )A .2cos x -B .2sin x -C .2cos xD .2sin x8.如图,在ABC ∆中,点Q 为线段AC 上靠近点A 的三等分点,点P 为线段BQ 上靠近点B 的三等分点,则PA PC +=( )A .1233BA BC + B .5799BA BC + C .11099BA BC + D .2799BA BC +9.明代数学家程大位(1533~1606年),有感于当时筹算方法的不便,用其毕生心血写出《算法统宗》,可谓集成计算的鼻祖.如图所示的程序框图的算法思路源于其著作中的“李白沽酒”问题.执行该程序框图,若输出的y 的值为2,则输入的x 的值为( )A .74B .5627C .2D .1648110.函数()5sin 20312f x x x ππ⎛⎫⎛⎫=+≤≤ ⎪⎪⎝⎭⎝⎭的值域为( ) A .1,12⎡⎤-⎢⎥⎣⎦B .10,2⎡⎤⎢⎥⎣⎦C .[]0,1D .1,02⎡⎤-⎢⎥⎣⎦11.曲线24x y =在点()2,t 处的切线方程为( ) A .1y x =-B .23y x =-C .3y x =-+D .25y x =-+12.若命题:从有2件正品和2件次品的产品中任选2件得到都是正品的概率为三分之一;命题:在边长为4的正方形内任取一点,则的概率为,则下列命题是真命题的是( )A .B .C .D .二、填空题:本题共4小题,每小题5分,共20分。
周练一 长度、时间的测量
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周练一 长度、时间的测量 命题:武金芝1.在下列数据后填上合适的单位:(1)小明的身高为17.2_____; (2)教室的的长度850_______; (3)乒乓球的直径为4.0_____; (4)学生鞋子的长度约24_____; 2.用某刻度尺测出桌子的高度是72.4cm ,测量结果的准确值是 cm ,估计值是 cm 。
这把刻度尺的分度值是_______cm 。
3.(2005•江西)在做“测平均速度”的实验时,停表的示数如图所示,该停表所示的时间为 min s .4. 某同学用同一刻度尺对某物体进行了五次测量,结果记录是:13.82cm 、13.83cm 、13.81cm 、13.28cm 、13.81 cm .根据数据分析,该刻度尺的分度值是 ,这五次记录中有一次是错误的,它是 ,该物体的长度测量值应记为__________cm 。
5.“纳米是一种长度单位,1nm =10-9m .纳米技术是以0.1nm ~100nm 这样的尺度为研究对象的前沿科学,目前我国在纳米技术的研究方面已经跻身世界前列.1.76×109nm =_______m 。
6. 如图所示,小明用刻度尺测量物体的长度,图中刻度尺的分度值是 cm ,物体A 长度为 cm 。
7.用图所示的刻度尺测量铅笔的长度,该刻度尺的最小刻度为_______mm ,所测铅笔的长度为 5.25_________(填单位)。
8.(09江西)如图所示,用A 、B 两刻度尺测同一木块的边长,就分度值而言,____ __尺精确些,就使用方法而言,__ ____不正确. 9.(09南昌)坐在温馨的物理考场,仔细想想:你平时走路的步幅约为50 ,上体育课时你跑100m 所需时间约为16 (填上合适的物理量单位).10.图中用刻度尺测物体的长度,读数正确的是 (选填“A ”或“B ”),物体的长度是 cm 。
11.写出图中圆柱体的直径 ,以及所用刻度尺的分度值 。
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江苏省仪征中学2015届高三英语周末练习(一)选题人:张妮赵春慧审题人:孔艳2014. 9.7 一.单选题1. — How do you find the town you visited yesterday?— The town has changed out of all ______ in the past 20 years, a completely new one in front of me.A. realizationB. descriptionC. expressionD. recognition2. I _____ it as a basic principle of the company that suppliers of raw materials should be given a fair price for their productsA. makeB. lookC. takeD. think3. Nelson Mandela’s fellow campaigner, Archbishop Desmond Tutu, said Mr. Mandela was ―not only an amazing gift to humankind, but he also made South Africans and Africans feel good about being_______ we are. He made us walk tall.‖A. whatB. whereC. whenD. who4. _____ to be a manager, the young engineer is thinking about fresh approaches to____ their new products.A. Promoting; promotedB. Promoted; promotedC. Promoted; promotingD. Promoting; promoting5. The first thing you must remember is that in order to succeed, it is almost compulsory that you______ optimistic.A. beB. need to beC. will beD. shall be6. Though your status is permanent, your identification card is temporary only for 20 years and has to be ___________regularly.A. renewedB. registeredC. restoredD. resigned7.When asked what they would volunteer to do, __________ said they were willing to help the children from poor families.A. half of themB. half of whomC. half of whatD. half of which8. Gradually, you will realize that the things that matter are ________ that can’t be bought with money.A. theseB. thoseC. onesD. some9. The Internet, first invented in 1969, ____ possible the communication between people all over the world.A. made itB. was madeC. was made itD. made10. ---- ____ the woman with baby come over? We have a seat.---- Thank you, sir. Actually I do have my seat here, but my baby likes to look out of the window.A. MustB. ShallC. MayD. Would11. ______ important we may regard school life to be, parents have a great influence on their children because they spend more time at home than in the classroom.A. SinceB. AlthoughC. AsD. However12. — I thought Mr. Black would say something about the mid-term examination.— So did I, but he ______ a word of it.A. doesn’t sayB. didn’t sayC. hasn’t saidD. hadn’t said14. ---Oh, how depressed! I’m bound to lose to him in tomorrow’s competition.---Cheer up! In fact, he is _________ than you.A. not more nervousB. no more nervousC. no less nervousD. a little less nervous15. While our city tries impatiently to change its appearance by tearing down old buildings, more and more citizens are suggesting ways to preserve the________ important architecture.A. partlyB. historicallyC. originallyD. apparently二、完形填空Dear listeners,Each month on Instagram, we suggest a photo assignment for our project Public Square. For this month’s assignm ent, we wanted to see your commute(通勤,上下班) —that perfectly average and ordinary part of the day that many of us share and 16 you to find beauty in it. Many of you rose to the 17 . And one photo 18 had a special story.Amateur photographer Jabali Sawicki commutes by 19 from Brooklyn into New York’s Penn Station every morning. But on a recent return trip home he noticed something 20 with the assignment in mind:―It was 21 all of New York City had vanished into the background,‖ he says. ―All the noise and chaos of the subway and commute had 22 . And all that was left was a mother and her son 23 .‖Sawicki captured the 24 , shared it, and then likely forgot about it.The mother, it turns out, was Megan Freund, who commutes every day with her young son, Eli. Eli goes to day care near where his mother works as a teacher.Shortly thereafter, Freund was scrolling through some of the Instagram commute photos we 25 here, when she saw the picture Sawicki had taken 26 her and her son on the train: ―I started crying 27 I was so overwhelmed,‖ she says. ―He’s sort of curled up next to me and I’m reading him a book about dinosaurs, actually, my father had given to me when I was 8 years old for Christmas. It was pretty 28 that somebody had noticed that moment.‖She left a comment on the blog and also left a comment 29 Sawicki on Instagram.―I probably read it four times30 I realized what was happening,‖ he says. ―The fact that 31 miraculously she had found this picture and that it 32 so much to her.‖He mailed a 33 of the photo to Freund.―It’s a really nice 34 ,‖ says Freund, ―especially when the days are long, the commutes are long ... we’re so fortunate to have this time together.‖The photo is available on Instagram under the title ―Giving the gift of reading.‖, displaying a magical moment between mother and son. It may seem like just another subway ride, but with a book and a(n) 35 , the adventures are limitless.Keep an eye out for the next Public Square assignment on Instagram!16. A. inspired B. challenged C. demonstrated D. illustrated17. A. occasion B. situation C. circumstance D. atmosphere18. A. in general B. in part C. in the first place D. in particular19. A. bus B. subway C. trolley D. ferry20. A. different B. outstanding C. agreeable D. essential21. A. as for B. as if C. as of D. as to22. A. died off B. died out C. died down D. died hard23 A. drawing B. reading C. arguing D. negotiating24. A. moment B. horizon C. spot D. target25. A. applied B. regulated C. posted D. attached26. A. of B. in C. to D. on27 A. but B. if C. because D. though28 A. considerable B. terminal C. principal D. incredible29. A. thanking B. relieving C. applauding D. exclaiming30. A. since B. before C. while D. instantly31 A. someway B. somewhat C. somehow D. somewhere32. A. evaluated B. meant C. stimulated D. touched33. A. passage B. piece C. package D. print34. A. reward B. reminder C. reference D. recommendation35. A. creation B. tradition C. communication D. imagination三.阅读理解AThe power of humor and laugher is numerous. They entertain us and make us feel good. But,above all, we have discovered that humor and laughter are the best medicine. They relieve pain, reduce stress and anxiety, and are anti-aging and longevity facilitators(促进者).They are extremely necessary for helping us to find and maintain a balance between life and work. However, they are slipping away from us. We have become far too serious. The only ones who still enjoy humor, laughter, fun and play to the fullest are young children. Children tend to laugh an average of 200 times a day. For adults, however, it is a totally different story.In the 1950s people laughed on average 18 times a day. Today, we are lucky if we average between 4-6 times a day.As a matter of fact, a recent study found that people laugh 6 more times in the presence of one person but 30 more times in a group of people. You can get a chuckle(咯咯笑) from jokes you get on the Internet, but it is not the same as belly jiggling laughter (a deep laugh) you get when you interact with others.Socializing(交际) with friends and relatives was much looked forward to. However, this is no longer the case. In fact, the majority of people can hardly find time, nor do they have the inclination towards socializing outside home. They turn to electronic media such as television, computers, the Internet, videos, CDs, and audio equipment, which can provide them with instant self-entertainment at the push of a button.The workplace does not fare(进展) much better. Due to the pressures to produce more in the same or fewer hours available and to compete, for example, in a manufacturing field with cheaper labor elsewhere in the world, humor and laughter in the workplace have gradually eroded(逐渐毁坏)away.I have developed a real appreciation, perhaps closer to a strong desire for the power of humor and laughter. This encouraged me to write my first book titled ―The Power of Humor‖ and subsequently my second book titled ―Kids Say the Goggonest Things‖ base d on the natural humor, laughter, play and fun that kids experience and they freely share with parents, grandparents and teachers.From writing about humor and laughter, people start to ask me to speak up for them. To date, I have developed a number of humor-laughter topics that I use in my keynote presentations. You are invited to subscribe to my free monthly e-magazine ―The Humormeister’s Forum‖ by clicking on the Free Humor E-zine navigation button on the website.36. According to the author, laughter is leaving us partly because ________.A. the pace of change in our lives is becoming fasterB. we fail to reflect on fun times in our livesC. we treat everything in a serious wayD. humor of situations lies beneath37. The fourth paragraph mainly tells us that ________.A. researchers have made a new discovery about the effect of laughterB. people laugh more heartily when spending time with othersC. we can entertain ourselves with the help of the InternetD. getting a deep laugh nowadays is difficult38. The underlined word ―inclination‖ in Paragraph 5 most probably means ―________‖.A. destinationB. tendencyC. attitudeD. approach39. Which of the following articles can we most probably find in ―The Humormeister’s Forum‖?A. The power of honesty.B. Don’t be your own worst enemy.C. Live life purposefully: The relationship within.D. Funny Christmas stories to share with your loved ones.BLearning a foreign language is never easy --- but it’s a lot harder if you f all into these five common snares.(陷阱)1. Not listening enoughThere’s a school of linguistics(语言学)that believes language learning begins with a ―silent period‖. Just as babies learn to produce a language by hearing and repeating sounds, language learners need to practice listening in order to learn. This can improve learned vocabulary and structures and help learners see patterns in language.2. Lack of curiosityIn language learning, attitude can be a key factor in how a student progresses.Linguists studied attitude in language learning in the 1970s in Quebec, Canada, when tension was high between Anglophones (English-speaking people) and Francophones (French-speaking people). The study found that Anglophones holding prejudices against French Canadians often did poorly in French language learning, even after studying French for years as a mandatory school subject. On the other hand, culturally curious students will be more receptive to the language and more open to forming relationships with native speakers.3. Rigid thinkingLinguists have found that students with a low tolerance of ambiguity tend to struggle with language learning. Language learning involves a lot of uncertainty –students will encounter new vocabulary daily, and for each grammar rule there will be a dialectic exception or irregular verb. Until native-like fluency is achieved, there will always be some level of ambiguity.Learner who see a new word and reaches for the dictionary instead of guessing the meaning according to the context may feel stressed. Eventually, they might quit their language studies out of frustration.4. A single methodSome learners are most comfortable with the listen-and-repeat drills of a language lab or podcast. Some need a grammar textbook to make sense of a foreign tongue. Each of these approaches is fine, but it’s a mistake to rely on only one.Language learners who use multiple methods get to practise different skills and see concepts explained in different ways. What’s more, the variety can keep them from getting stuck in a learning rut (老一套).5. __________It doesn’t matter how well a person can write in foreign script, conjugate a verb, or finish a vocabulary test. To learn, improve, and truly use your target language, we need to speak. This is the stage when language students can clam up, and feelings of shyness or insecurity hinder all their hard work. In Eastern cultures where saving face is a strong social value, EFL teachers often complain that students, despite years of studying English, simply will not speak it. They’re too afraid of bun gling the grammar or mispronouncing words in a way that would embarrass them.40. The author mentions Anglophones and Francophones in order to show ________.A. Canada is a mixed country.B. interest in language learning is importantC. there is competition between Anglophones and FrancophonesD. Anglophones held prejudices against Francophones41. Learners with a curiosity in foreign cultures _________.A. need a grammatical rules to understand a foreign languageB. are more willing to get exposed to relationships with native speakersC. are not afraid of making pronunciation mistakesD. would like to pracitse listening in order to achieve fluency42. Which of the following can be used to fill in the blank?A. Ignorance of cultural differencesB. Incorrect pronunciationC. Improper use of languageD. Great fear for embarrassment43. What’s the author’s purpose in writing this text?A. To present the recent study on language learningB. To explain why the five mistakes happenC. To give us some advice on language learningD. To offer some tips on self-studyCI was born under the Blue Ridge, and under that side which is blue in the evening light, in a wild land of game and forest and rushing waters. There, on the borders of a creek that runs into the Yadkin River, in a cabin that was chinked with red mud, I came into the world a subject of King Georgethe Third, in that part of his realm known as the province of North Carolina.The cabin smelt very strongly of corn-pone and bacon, and the odor of pelts. It had two shakedowns(临时床铺), on one of which I slept under a bearskin. A rough stone chimney was raised outside, and the fireplace was as long as my father was tall. There was a crane in it, and a bake kettle; and over it great buckhorns held my father’s rifle when it was not in use. On other horns hung jerked bear’s meat and venison hams, and gourds for drinking cups, and bags of seed, and my father’s best hunting shirt; also, in a neglected corner, several articles of woman’s clothing. These once belonged to my mother. Among them was a gown of silk, of a fine, faded pattern, which I always wondered. The women at the Cross-Roads, twelve miles away, were dressed in coarse butternut wool and huge sunbonnets. But when I questioned my father on these matters he would give me no answers.My father was—how shall I say what he was? To this day I can only surmise many things of him. He was a Scotchman born, and I know now that he had a slight Scotch accent. At the time of which I write, my early childhood, he was a frontiersman and hunter. I can see him now, with his hunting shirt and leggins (绑腿) and moccasins(莫卡辛鞋); his powder horn, engraved with wondrous scenes; his bullet pouch and tomahawk and hunting knife. He was a tall, lean man with a strange, sad face. And he talked little except when he drank too many ―horns,‖ as they were called in t hat country. These little bad behaviors of my father’s were a permanent source of wonder to me—and, I must say, of delight. They occurred only when a passing traveler who hit his fancy chanced that way, or, what was almost as rare, a neighbor. Many a winter night I have lain awake under the skins, listening to a flow of language that held me spellbound, though I understood scarce a word of it.―Virtuous(有德行的) and vicious(罪恶的) every man must be,Few in the extreme, but all in a degree.‖The chance neighbor or traveler was no less struck with wonder. And many the time have I heard the query, at the Cross-Roads and elsewhere, ―Whar Alec Trimble got his larnin’?‖44. The mention of the dress in the second paragraph is most likely meant to _____.A. show the similarity between its owner and other members of the communityB. show how warm the climate wasC. show the dissimilarity between its owner and other members of the communityD. give us insight into the way most of the women of the region dressed45. Judging by the sentences surrounding it, the underlined word ―surmise‖ in the third paragraph most nearly means _____.A. to form a negative opinionB. to praiseC. to desireD. to guess46. Why did the narrator enjoy it when his father drank too many ―horns,‖ or drafts of liquor?A. The father spoke brilliantly at those times.B. The boy was then allowed to do as he pleased.C. These were the only times when the father was not abusive.D. The boy was allowed to sample the drink himself.47.What is the meaning of the lines of verse (诗句) quoted in the passage?A. Men who pretend to be virtuous are actually vicious.B. Moderate amounts of virtuousness and viciousness are present in all men.C. Virtuous men cannot also be vicious.D. Whether men are virtuous or vicious depends on the difficulty of their circumstances.DOld Behrman was a painter who lived on the ground floor of the apartment building. For years, he had always been planning to paint a work of art, but had never yet begun it. He earned a little money by serving as a model to artists who could not pay for a professional model. He was a fierce, little, old man who protected the two young women in the studio apartment above him.Sue found Behrman in his room. In one area was a blank canvas (画布) that had been waiting twenty-five years for the first line of paint. Sue told him about Johnsy and how she feared that her friend would float away like a leaf on the old ivy vine(常青藤) climbing hopelessly up the outside block wall.Old Behrman was angered at such an idea. "Are there people in the world with the foolishness to die because leaves drop off a vine? Why do you let that silly business come in her brain?""She is very sick and weak," said Sue, "and the disease has left her mind full of strange ideas.""This is not any place in which one so good as Miss Johnsy shall lie sick," yelled Behrman. "Some day I will paint a masterpiece, and we shall all go away."Johnsy was sleeping when they went upstairs. Sue pulled the shade down to cover the window. She and Behrman went into the other room. They looked out a window fearfully at the ivy vine. Then they looked at each other without speaking. A cold rain was falling, mixed with snow.The next morning, Sue awoke after an hour's sleep. She found Johnsy with wide-open eyes staring at the covered window. "Pull up the shade; I want to see," she ordered, quietly. Sue obeyed.After the beating rain and fierce wind that blew through the night, there yet stood against the wall one ivy leaf. It was the last one on the vine. It was still dark green at the center. But its edges were colored with the yellow. It hung bravely from the branch about seven meters above the ground."It is the last one," said Johnsy. "I thought it would surely fail during the night. I heard the wind. It will fall today and I shall die at the same time.""Dear, dear!" said Sue, leaning her worn face down toward the bed. "Think of me, if you won't think of yourself. What would I do?" But Johnsy did not answer.The next morning, when it was light, Johnsy demanded that the window shade be raised. The ivy leaf was still there. Johnsy lay for a long time, looking at it. And then she called to Sue, who was preparing chicken soup."I've been a bad girl," said Johnsy. "Something has made that last leaf stay there to show me how bad I was. It is wrong to want to die. You may bring me a little soup now."An hour later she said: "someday I hope to paint the Bay of Naples."Later in the day, the doctor came, and Sue talked to him in the hallway. "Even chances. With good care, you'll win," said the doctor. "And now I must see another case I have in your building. Behrman, whose name is some kind of an artist, I believe, has Pneumonia (肺炎), too. He is an old, weak man and his case is severe. There is no hope for him, but he goes to the hospital today to ease his pain."The next day, the doctor said to Sue:" She's out of danger. You won. Nutrition and care now –that's all."Later that day, Sue came to the bed where Johnsy lay, and put one arm around her. "I have something to tell you, white mouse," she said, "Mister Behrman died of pneumonia today in the hospital. He was sick only two days. They found him the morning of the first day in his room downstairs helpless with pain. His shoes and clothing were completely wet and icy cold. They could not imagine where he had been on such a terrible night.―And then they found a lantern, still lighted, and a ladder that had been moved from its place. And art supplies and a painting board with green and yellow colors mixed on it.―Look out the window, dear, at the last ivy leaf on the wall. Didn't you wonder why it never moved when the wind blew? Ah, darling, it is Behrman's masterpiece – he painted it there the night that the last leaf fell."48. We can learn from the first two paragraphs that Behrman ________.A. was ambitious and always wanted to paint a masterpieceB. didn’t have any works and was a failure in artC. was protective of the two girls but mostly sensitive and fierce.D. was a professional model waiting for his great opportunity.49. What was in Johnsy's mind all the time when she was very sick?A. The old ivy leaves have little to do with my getting well.B. When the last leaf falls from the ivy vine I must go.C. I am such a bad girl as to make everything messy.D. Sue must feel lonely if I’m not with her.50. One can safely assume after reading the story that _____.A. the relationship between the two girls was based on material comfortB. Behrman was infected with Pneumonia by JohnsyC. Behrman showed great sympathy for the two youthD. Johnsy knew clearly why Behrman painted the ivy leaf for her.51. What does the underlined part "Even chances" suggest?A. The doctor indicated that Johnsy was sure to die.B. The doctor thought that they should let her go.C. The doctor believed that Johnsy had every chance of recovery.D. The doctor put her chances at fifty-fifty.52. When Johnsy said she had been a bad girl, she meant that _____.A. asking for death was not rightB. she deserved more severe punishmentC. she should never forget about her dreamD. she was ashamed not to be able to support the other two53. Which of the following is the best title for this passage?A. Behrman’s MasterpieceB. The Last Ivy LeafC. Kind-hearted BehrmanD. A Life-saving Painting四.任务型阅读Plastic cards are growing in popularity with increased demands in the advertising and marketing industry. Plastic cards are powerful tools that help connect an individual to civilization. These cards serve as an attractive promotional method by which one can reflect the business services and help represent an individual or a company uniquely and professionally. They are used as a channel of exchanging information quickly and effectively.A new and more exciting way of offering a gift is in the form of gift cards. These types of plastic cards are a pleasure to receive and actually help a business to increase its sales. Gift cards offer a certain amount of money with which the recipients can shop from that business according to their preferences. The freedom to select one’s own gift makes these plastic cards a joy to use. They are also a great way to bring smiles at a pocket friendly cost.Loyalty cards(会员积分卡) will help you keep your customers as possible customers. Many businesses worldwide are using these cards to record information about what their customers buy and reward them for buying goods or services. Loyalty plastic cards can range from punch cards (a medium for feeding data into a computer) to track and reward point cards. Plastic card printing companies can provide help on which type of loyalty card you prefer and can make better use of.Another use of plastic cards is confirming membership in an organization. These types of cards can help connect tangible(实际的) features to organizations. A membership card is used to reflect that the customer is an officially valued individual of the business and therefore is fit for special discounts and services offered by that business. Membership cards look great and instantly make the customer feel valued. These plastic cards also help promote repeated business.Plastic cards also take the form of ID cards. ID cards are basically used for identification and security purpose s. The cards should have a person’s photographs along with his name, age and contact number. The best benefit of ID cards is the fact that they will ensure proper document processing while fighting fraudulent(欺诈的) and criminal practices. For example, many companies require that you provide them with your identity card when it comes to a job application. This assists the company in五.用动词正确形式填空1.______ to the stadium for the concert are only the ticket holders, who are crazy about Jay Chou’s songs. (admit)2.______________of danger in the street at night, she had to go home with a friend _________ her.(convince; accompany)3.Young children ___________(age) 4 or below and ____________(weigh) less than 40 pounds must be in a child safety seat.4.With a large amount of work ____________(remain) ________________(do), the chief manager couldn’t spare time for a holiday.5.All of us have read thrilling stories in which the heroes have only a limited time to live. Such stories set us _________(think), ________(wonder) what we should do under similar circumstances. 6.Most tennis courts ________ (equip的形式) with lights, many people often play after dusk. 7.Misunderstandings _________(arise) from lack of social communication, unless properly ___________(handle), may lead to serious problems.8.George is going to talk about the geography of his country, but I’d rather he ____________(focus) more on its culture.9.____________(expose) to loud noises in this work shop without a special helmet for some time will have one’s hearing harmed.10.The big fire in Shanghai, believed __________________(occur) due to the burning of construction materials, caused 58 deaths and destroyed all the belongings of the people there..。