2013高三限时训练1

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高三一轮限时规范训练 选修1 第2讲 生物技术在食品加工中的应用

高三一轮限时规范训练 选修1 第2讲 生物技术在食品加工中的应用

高三一轮限时规范训练选修1第2讲生物技术在食品加工中的应用(时间:45分钟)A级基础演练1.(2013·东城区检测)下列关于果酒和果醋制作的叙述,不正确的是( )。

A.制作果酒时瓶口要密闭,而制作果醋时中断通氧可能会引起醋酸菌死亡B.在变酸的果酒表面观察到的菌膜是醋酸菌在液面大量繁殖而形成的C.温度对酵母菌进行酒精发酵的影响很大,而对醋酸菌进行的发酵影响不大D.制作果酒和果醋时都应用体积分数为70%的酒精对发酵瓶进行消毒,并注意无菌操作解析制作果酒利用的是酵母菌在无氧呼吸时发酵产生酒精,制作果醋时利用的醋酸菌是好氧菌。

温度对酵母菌进行酒精发酵和醋酸菌进行的发酵都有影响。

答案 C2.在果酒、果醋和腐乳制作中,都要防止微生物污染,下列有关叙述正确的是( )。

A.果醋发酵阶段应封闭充气口,防止杂菌进入B.腌制腐乳的卤汤中应含有12%左右的酒精以抑制细菌的增殖C.利用自然菌种发酵果酒时,将封有葡萄汁的发酵瓶进行高压灭菌D.将长满毛霉的豆腐放在瓶中,并逐层加盐,接近瓶口部分的盐要铺薄一些解析本题考查的是果酒、果醋、腐乳制作的基本过程及相关注意事项。

弄清各制作过程的条件及原理是正确解答该题的关键。

醋酸菌是好氧菌,发酵的时候需要通入无菌空气;利用自然菌种发酵时利用的就是葡萄汁中的酵母菌,高压灭菌会杀死酵母菌;腐乳制作时装坛过程中越靠近坛口盐越要厚一些。

答案 B3.鸭梨醋饮属绿色健康饮品,既保存了鸭梨中的多种氨基酸、维生素、矿物质、有机酸等营养成分又兼具果醋醒酒护肝、助消化、降低血脂、软化血管等养生保健功能,深受广大消费者青睐。

如图为鸭梨醋饮的制作流程图,请据图回答问题。

(1)若得到的鸭梨汁非常浑浊,解决的方法是__________。

(2)过程①所用的微生物是____________,为了提高该微生物的利用率,最好用____________法对其进行固定,而固定化酶一般不采用此法,理由是____________。

2013届高三限时训练(1)

2013届高三限时训练(1)

2013届高三限时训练(1)(时间:45分钟)班级姓名得分一.语言基础知识1.下列词语中加点的字,每对读音都不相同的一组是(3分)A.绮.丽/倚.马可待信笺./草菅.人命躯壳./金蝉脱壳.B.咯.血/恪.尽职守蹊.跷/休戚.相关切削./削.足适履C.茁.壮/相形见绌.造诣./自怨自艾.劲.旅/疾风劲.草D.机杼./毁家纾.难折.本/退避三舍.威吓./杀鸡吓.猴2.下列词语中加点的字,每对读音都不相同的一组是(3分)()A.焙.烧/.蓓.蕾恫.恐/恸.哭面颊./汗流浃.背B.荠.菜/同侪.迄.今/收讫.踉.跄/不稂.不莠C.沙碛./油渍.神祇./福祉.咋.舌/乍.暖还寒D.桔.梗/诘.问桎梏./诰.命筵.席/垂涎.已久3.下列各句中,没有语病的一句是(3分)()A.关于小说的创作,莫言认为作家能否通过故事表达自己对社会的看法,歌颂真善美,揭露假恶丑是一件严肃的事情,并为此继续努力。

B.企业在市场上的竞争,表面上看是品牌、产品、价格、服务的竞争,但实质上是企业所有员工的品质和心态的竞争。

C.备受观众追捧的“中国好声音”不仅仅是一个优秀的选秀节目,更是中国电视历史上真正意义的首次制播分离,树立了中国电视音乐节目的新标杆。

D.10月8日零点,随着全国各地高速公路收费站收费杆的落下,使持续八天的高速公路免费通行鸣金收兵,标志着首次实施的重大节假日小客车免费通行政策首战告捷。

4. 下列各句中,没有语病的一句是(3分)()A. 麦当劳店堂里宜人的温控环境和悦耳的轻音乐,使不少中国顾客把该场所作为闲聊、会友,甚至读书写作的好地方。

B. 打开莎士比亚戏剧集,如同打开百宝箱,使人眼花缭乱,处处迸发出智慧的火花,闪现着艺术的光芒。

C. 对于那些情节严重的犯了罪的干部,特别是占据重要职位的干部,我们必须依法给以严厉的法律制裁。

D. 苏通大桥建造的初衷是,拉近苏北、苏南的距离,进一步推动江苏省沿江开发战略的实施,具有十分重要的意义。

2013届高三限时训练(4)

2013届高三限时训练(4)

2013届高三限时训练(4)(45分钟)班级姓名得分一.语言基础知识1.下列词语中加点的字,每对读音都相同的一项是()(3分)A.稽首/无稽之谈辟谣/开天辟地偏裨/大有裨益B.芜杂/忤逆不孝沆瀣/浑身解数喟然/蔚然成风C.剽悍/虚无缥缈逡巡/怙恶不悛丰赡/高瞻远瞩D.愠色/意味蕴藉腼腆/暴殄天物荡漾/怏怏不乐2. 下列词语中,没有错别字的一组是()(3分)A. 签署发贴子雍容华贵万事俱备,只欠东风B. 端详螺丝钉额手称庆兵来将挡,水来土掩C. 惊诧震慑力眼花瞭乱一言既出,驷马难追D. 延袭扫描仪不屈不饶知己知彼,百战不殆3. 在下面一段话空缺处依次填入成语,最恰当的一组是()(3分)季羡林先生在《八十述怀》中说:“我从来没有想到,我能活到八十岁,如今竟然活到了八十岁,然而又一点也没有八十岁的感觉。

岂非!我服从任何人的调遣与指挥。

只敢规规矩矩,不敢乱说乱动。

然而我的脑筋还在,我的思想还在,我的感情还在,我的理智还在。

我不甘心成为,我必须干点事情。

二百多万字的印度大史诗《罗摩衍那》,就是在这时候译完的。

”季老的话让读者感觉到他文章的语言没有八十岁的,反而多了一些活泼与生动。

A.出人意料行尸走肉老气横秋B.咄咄怪事酒囊饭袋老态龙钟C.咄咄怪事行尸走肉老气横秋D.出人意料酒囊饭袋老态龙钟4.根据下面的介绍,提取关于“立体电影”的三个关键词(或短语)。

(4分)立体电影是用两个镜头如人眼那样从两个不同方向同时拍摄下景物的影像,制成电影胶片。

在放映时,通过两台放映机,把用两个摄影机拍下的两组胶片同步放映,使这略有差别的两幅图像重叠在银幕上。

观众用偏振眼镜观看,每只眼睛只看到相应的偏振光图象,即左眼只能看到左机映出的画面,右眼只能看到右机映出的画面,这样就会像直接观看那样产生立体感觉。

这就是立体电影的原理。

5.顾炎武是清代著名思想家,爱国学者。

他在著作《日知录》中提出的“天下兴亡,匹夫有责”,是其一生思想的高度概括和写照。

2013届高三限时训练(2)

2013届高三限时训练(2)

2013届高三限时训练(2)(时间:45分钟)班级姓名得分一.语言基础知识1.下列词语中加点的字,每对读音都不相同的一组是(3分)()A.辟.易/鞭辟.入里刹.那/名山古刹.解.数/跑马卖解.B.涤纶./羽扇纶.巾巷.道/万人空巷.着.迷/不着.边际C.露.白/不露.痕迹纤.尘/纤纤..细步亟.待/亟.来闻讯D.拾.级/拾.人牙慧款识./博闻强识.扛.活/力能扛.鼎2.下列各组词语中,没有错别字的一组是(3分)()A.厉行节约再接再厉变本加厉励精图治B.无事生非循规蹈矩事必躬亲委屈求全C.炫赫一时明火执仗拾人牙慧不肖子孙D.颐指气使遗人笑柄得不偿失浮想联翩3、下列各句中,加点的成语使用不正当的一项是(3分)()A. 女性作者的文笔,常以柔情似水、细腻委婉见长,虽非个个如此,但说大多数是这样,应该算是持平之论....。

B.面对战略上的调整,该公司必须做出选择:要么联手业内巨头,强势逼宫,使对手就范;要么急流勇退....,套现获利,回归软件市场。

C.自第三分钟朴智星被断球后,曼联队在五分钟内竟然无法控制局面,而阿森纳队排山倒...海.般地高速狂攻,压得曼联喘不过气来。

D. 现在少数媒体放着有重要新闻价值的素材不去挖掘,反倒抓住某些明星的一点逸闻就笔走龙蛇....,这种做法真是令人费解。

4、下列句子中没有语病的一句是(3分)()A、花粉含菌量高的主要原因,往往是收集后未及时脱水或储存方法不当造成的,所以,不仅要注意含菌总数和大肠杆菌含量,还应格外注意霉菌。

B、在即将到来的下学期,全国1.5亿农村义务教育阶段学生全部用上了免费教科书,部分科目用书还将循环使用。

C、南京郊外的阳山,有三块经人工雕塑、长达40米的巨大石头,专家认为这是朱棣为给朱元璋修建神功圣德碑选的碑材。

D、国家知识产权局有关负责人认为,国内专利申请的持续快速增长,表明我国公众的专利意识和研究开发水平不断提高。

5.下面一段文字是从哪几方面介绍“苏裱”的?请简要概括。

江西省定南中学2013届高三语文强化训练题01 限时35分钟)介绍

江西省定南中学2013届高三语文强化训练题01 限时35分钟)介绍

定南中学2013届高三语文强化训练题1 限时35分钟班级姓名一、(12分,每小题3分)1. 下列各组词语中加点的字,读音都不相同的一组是()A.载.体/转载.讥诮./俊俏.哄.堂大笑/一哄.而散B.棱.角/菱.角伺.候/饲.养硕果累累..../白骨累累C.强.求/牵强.隽.永/镌.刻刚愎.自用/无裨.于事D.入殓./眼睑.纰.漏/霹.雳有恃.无恐/两山对峙.2.下列词语中,没有错别字的一组是()A.临摹煞车化妆品声名鹊起B.寒暄剧增拌脚石防患未然C.仓皇宣泄公积金一如继往D.厮打装璜候车室要言不烦3.下列句子中加点的词语使用正确的一项是()A.想当初,“芙蓉姐姐”以其夸张的造型风格成为网络媒体的焦点,曾几何时....,还是被杭州乞丐流浪者——“犀利哥”这样的新兴网络红人所替代,逐渐淡出了人们的视野。

B.生与死是人生再自然不过的事情,但在我们的文化中,死亡却是讳莫如深....的话题,人们不愿说死,更不愿讨论有关死亡的问题。

C. 长征五号运载火箭的发射是一项精密、系统的工作,任何一个环节偶尔..出现的失误,都会造成不可估量的损失。

D.面对群众的质问,这个假装残疾骗人钱财的“职业乞丐”意识到情况不妙,显得有些丈.二金刚摸不着头脑........,灰溜溜地离开了。

4.下列各句中没有语病的一句是()A.透过近期频繁的“美韩”联合军演,我们不仅可以预见东亚及泛太平洋地区军事格局的发展脉络和走向,而且能解读出朝鲜半岛局势的变化。

B.在利比亚安全形势发生重大变化的情况下,中国政府迅速有序地展开了冷战结束后规模最大的撤侨行动,这进一步激发了海外华侨的爱国热情和民族精神。

C.“中国首善”陈光标赴台高调捐赠的行为究竟是行善还是作秀,香港时事评论员赵嘉一对此的评价是肯定的。

D.在金融危机席卷全球的形势下,专家们认为,广大出口加工型企业只有大力开拓国内市场,学会内销外销两条腿走路,才能逐步完善企业销售网络,实现自救。

5.依次填入下面一段文字横线处的语句,衔接最恰当的一组是(3分)我们会过得快乐吗?。

2013届高考语文一轮复习45分钟选择题限时训练1

2013届高考语文一轮复习45分钟选择题限时训练1

2013届高考语文一轮复习45分钟选择题限时训练(1)一、本大题每小题3分,共12分。

1.下列词语中加点的字,每对的读音完全相同的一组是()A.躯壳./甲壳.虫慰藉./相与枕藉.便.宜行事/便.民服务B.强迫./迫.击炮救济./济.济一堂日薄.西山/妄自菲薄.C.字帖./服贴.纰缪./未雨绸缪.安步当.车/长歌当.哭D.开拓./拓.片应.允/应.声而落淡泊.名利/水泊.梁山2.下面语段中加点的词语,使用不恰当的一项是()日前,金文明先生在《咬文嚼字》上撰文指出,余秋雨在没有任何根据的情况下,强不..知以为知....。

当....,硬说自己将“仁者乐山”的“乐”读成lè并没有错,显然是无稽之谈然,余秋雨不是专攻语言的,读错一两个字,本无可非议......。

问题是分明错了,还要乌龟垫床脚..,并且编出一套理论来唬人,实在让人不能接受。

..硬撑...——A.强不知以为知B.无稽之谈C.无可非议D.乌龟垫床脚——硬撑3.下列各项中,没有语病的一项是()A.我国自主研发的神州七号载人飞船不辱使命,标志着我国宇航员在太空行走的难题已得到成功破解并逐步走向成熟。

B.被业界称为“中国纳斯达克”的创业板将于今日下午三点在深圳五洲宾馆举行开板仪式,中国证监会主席尚福林将出席开板仪式并发表重要讲话,证券界人士将齐聚一堂,共庆中国资本市场这一历史性事件。

C.获悉刘孝生夺得男子400米金牌,市体育局局长蔡述彪在接受记者采访时兴奋地说:“刘孝生不仅在个人项目中轻松夺得金牌,而且还有望在接下来的项目中再次为广东代表团夺金。

”D.宠物家政市场的潜力越来越大,但汕头的宠物保姆却没有“火”起来,主要原因是大多数人存有“伺候宠物丢人”的观念在作怪。

4.填入下面横线处的句子,与上下文衔接最恰当的一组是()爱因斯坦非常重视想像力,他说:“,,,。

”。

①而想像力能概括世界上的一切②因为知识都是有限的③严格地说,想像力是科学研究中的实在因素④并且是知识进化的源泉⑤想像力比知识更重要A.⑤①②③④B.③②①④⑤C.②①③④⑤D.⑤②①④③5.下列各项中,标点符号的使用合乎规范的一项是()A.庐山的云瞬息万变。

山西省新人教A版2013届高三上学期限时训练数学(理)试题10

山西省新人教A版2013届高三上学期限时训练数学(理)试题10

2013届高三上学期限时训练数学(理)试题10本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,满分 100分,考试时间50分钟.第Ⅰ卷(选择题共48分)一、选择题(本大题共6小题,每小题8分,共48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)4.已知结论:“在正ABC ∆中,BC 中点为D ,若ABC ∆内一点G 到各边的距离都相等,则2=GDAG”.若把该结论推广到空间,则有结论:“在棱长都相等的四面体 ABCD 中,若BCD ∆的中心为M ,四面体内部一点O 到四面体各面的距离都相等,则=OMAO【 】A .1B .2C .3D .45.下面进位制之间转化错误的是【 】A .101(2)=5(10)B .27(8)=212(3)C .119(10)=315(6)D .31(4)=62(2) 6.设,,(,0),a b c ∈-∞则111,,a b c b c a+++【 】 A .都不大于2- B .都不小于2-C .至少有一个不大于2-D .至少有一个不小于2-二、填空题 (本大题共4个小题,每小题8分,共32分)7.已知i iz+=+21_,则复数z =______ .8.下图是某算法的程序框图,则程序运行后输入的结果是_________. 9.在平面中ABC ∆的角C 的内角平分线CE 分∆ABC 面积所成的比AEC BEC S ACS BC∆∆=, 将这个结论类比到空间:在三棱锥A BCD -中,平面DEC 平分二面角A CDB --且与AB 交于E , 则类比的结论为______________.10. 如右图,如果执行右面的程序框图,若m n >,当输入正整数6=n ,那么输出的P 等于120,则输入的正整数m = .三、解答题(共20 分要求写出详细解答过程)11.(10分) 已知:23150sin 90sin 30sin 222=++ ; 23125sin 65sin 5sin 222=++ . 通过观察上述两等式的规律,请你写出对任意角度θ都成立的一般性的命题, 并给予证明.12.( 10分)已知递增等差数列}{n a 满足:11=a ,且421,,a a a 成等比数列. ①求数列}{n a 的通项公式n a ; ②若不等式12)211()211()211(21+≤-⋅⋅-⋅-n n a ma a a 对任意*N n ∈恒 成立,试猜想出实数m 的最小值,并证明.。

英语-江苏省2013届高三英语限时训练

英语-江苏省2013届高三英语限时训练

江苏省2013届高三英语限时训练第一节:单项填空1.It is reported that ____ audience of millions watched ____ wedding between Prince William and Kate on TV that day.A.a; an B. an; the C. the; the D. the; an 2.This is the first time that Apple has changed the size of the iPhone's display, ____ 3.5 inches since the original one was released in 2007.A.measured B.measures C.measure D.measuring 3.Word came that free souvenirs would be given to ____ comes first.A.no matter who B.whomever C.no matter whom D whoever 4.Professor James will give us a lecture on the Western culture, but when and where ___ yet.A.has not been decided B.have not been decidedC.are not decided D.had not been decided5.As is stressed in most of the literature on language teaching, language belongs to each of us, to the farmer____ to the professor.A.as good as B.as long as C.as much as D.as far as 6.—Jack, you seem to be in high spirits.—___? We have just won a football match 4-0.A.Guess what B.So what C.How come D.What if7.We all know that, ____, the situation will get worse.A.if not deal with carefully B.if it not dealt with carefullyC.if not carefully dealt with D.if is not carefully dealt with 8.Believe it or not, Higgs refuses to use the term "Higgs boson" himself because he thinks he does not ____the honor.A.hold B.obtain C.deserve D accept9.One thousand dollars a month is not a fortune to most people, but it will help cover my living .A.bills B.expenses C.prices D.charge 10.The news caused heated discussion online, with people __ the government ___ using the expensive project to build up its political image.A.accuse...of B.accuse...by C.accusing...by D.accusing...of 11.—Can I get out at noon?—No.Our school rules state that no student ___ be allowed out at noon, unless he has a request form.A.will B.shall C.must D.can12.Studies show that people who like sitting in the office for hours without a break are more__ to suffer from back problems.A.likely B.possible C.probable D.sure13.All the novels in the list, ___ otherwise stated, are all available in this library.A.as B.if C.although D.unless14.After he retired from office, Rogers____painting for a while but soon lost interest.A.took up B.kept to C.kept up D.took down15.My hometown is a common town, __ I think that can be found in every province in China.A.which B.what C.one D.that16.In the reading room, we found him __ at a desk, with his attention __ on a book.A.sitting; fixing B.to sit; fixed C.seating; fixing D.seated; fixed 17.—It smells great!—It's just green tea .Would you like ____?A.this B.one C.it D.some 18.Unsatisfied _____withthe payment, he took the job just to get some work experience.A.as was he B.as he was C.he was as D.was he as19.I am really grateful to Mr Smith, as without his help, I_____the entrance examination A.would not pass B.would not have passedC.could not be able to pass D.could not pass20.Y uan Longping is the scientist __ great contributions to solving food shortage in the world as well as in China a prize was awarded to him by the central government last year.A.for whom B.about whomC.for whose D.about whose第二节完型填空Make time for friendships.Nothing makes closeness disappear gradually 21 never talking to or seeing each other.22 some bonds of friendship may be strong enough to last long silences, most aren't.If you __23__ a person's friendship, make time for him or her, whether it's just a(n)24 phone call, an e-mail or a weekly get-together.On your computer at home or work, make a note to " call friends " 25 . Also make sure your friends' phone numbers are __26_ into your phone.Then call a friend when you have a spare 10 minutes.Remember: a true friend doesn't 27 when changes occur Nothing is 28 for new parents than to find that their single friends have left them because of the baby.A good friend is one who stays _29__ through it all - marriage, parenthood, new jobs, and any losses Make sure you aren't being a(n)__30 to a friend.Friendships disappear gradually if there i sn’t a _31_ between the give and the take.Be sensitive to how much your friend can and can't offer you 32__ it is time, energy or help ?and don't overstep the mark.And vice versa: friendships that make you feel tired also will not 33 .If a friendship is out of balance, talk the situation through.Be a good listener.It _34_ be the hardest thing in the world- simply to listen as he or she pours it all out or is 35 your advice or opinion.To be a better 36 , follow this advice: Maintain eye contact.Offer nods and murmurs to indicate that you 37 his or her point of view.Don't finish your friend's sentences.If you catch yourself planning your 38 while your friend is still talking, gently remind yourself to focus.Minimize the things that will 39 you focusing -don't write or read e-mails, open the mail or watch television while you're on the phone to your friend.He or she will hear the 40 of interest in your responses.21.A.more than B.rather than C.other than D.farther than 22.A.While B.As C.When D.If 23.A.dislike B.value C.envy D.appreciate 24.A.instructive B.warm C.occasional D.urgent25.A.regularly B.rarely C.carefully D.eventually 26.A.directed B.written C.constructed D.stored 27.A.take away B.look away C.run away D.keep away 28.A.happier B.sadder C.luckier D.stranger 29.A.slim B.calm C.true D.open 30.A.help B.burden C.pleasure D.threat 31.A.balance B.connection C.bond D.closeness 32.A.no wonder B.even if C.no matter whether D.only if 33.A.rise B.grow C.last D.decrease 34.A.can B.would C.might D.must 35.A.searching B.referring C.consulting D seeking 36.A.listener B.friend C.advisor D.talker 37.A.listen B.understand C.lose D.enjoy 38.A.future B.answer C.response D.praise 39.A.stop B.keep C.have D.make 40.A.display B.appearance C.indication D.lack第二节:阅读理解AI recently turned fifty, which is young for a tree, midlife for an elephant, and ancient for a sportsman.Fifty is a nice number for the states in the US or for a national speed limit but it is not a number that I was prepared to have hung on me.Fifty is supposed to be my father's age but now I am stuck with this number and everything it means.A few days ago, a friend tried to cheer me up by saying, "Fifty is what forty used to be " He had made an inspirational point.Am I over the hill? People keep telling me that the hill has been moved, and I keep telling them that the high-jump bar has dropped from the six feet I once easily cleared to the four feet that is impossible for me now.You're not getting older, you are getting better." says Dr.Joyce Brothers.This, however, is the kind of doctor who inspires a second opinion.And so, as I approach the day when I cannot even jump over the tennis net, I am moved to share some thoughts on aging with you.I am moved to show how aging feels to me physically and mentally.Getting older, of course, is obviously a better change than the one that brings you eulogies (悼词). In tact, a poet named Robert Browning considered it the best change of all: Grow old along with me!The best is yet to me.Whether or not Browning was right, most of my first fifty years have been golden ones so I will settle for what is ahead being as good as what has gone by.I find myself moving toward what is ahead with a curious blend (混合)of both fighting and accepting my aging, hoping that the philosopher was right when he said." Old is always fifteen years from now."41.The author seems to tell us in Paragraph 1 that____.A.time alone will tell B.time goes by quicklyC.time will show what is right D.time makes one forget the past 42.When the author turned fifty, people around him ____.A.tried to comfort him B.got inspiration with himC.were friendlier with him D.found him more talkative43.What does the writer mean by saying the underlined sentence in Paragraph 2?A.He has become older.B.He is not good at high jump any more.C.He feels sorry that he is not so good at high jump as before.D.He wants to make it known that he was once good at high jump.44.The author considers his fifty years of life ____A.peaceful B.ordinaryC.satisfactory D.regretful45.We can infer from the passage that____A.the old should led a simple life B.the old should face the fact of agingC.the old should take more exercise D.the old should fill themselves with curiosityBThe heat engine is certainly one of the most important devices that man ever invented.In its simplest meaning, the heat engine is a device that transforms heat energy into other forms of energy, such as mechanical and electrical energy.A great majority of the engines used today lie under the contributions that the heat engine made in the fields of industry, transportation, and the production of electricity gives us a deeper and more detailed look at the importance of heat engines.The head engine had a great role in the Industrial Revolution of the nineteenth century.Scientists developed machines, based on heat engines, which could increase the amount of goods produced, and at the same time, decrease the amount of time and money consumed.The manufactured goods became affordable to almost everyone, and they were not a luxury any more, After the introduction of the heat engine in the industrial field, the concept of mass production was first realized, and industry boomed as never before.Through history man has always tried to invent efficient means of transportation.However, it was not until the invention of the heat engine that this became possible.A new era replaced the old era of animal-powered transportation, an era whose characteristics were speed and comfort.The train was the first means of transportation that used the heat engine, and it introduced new horizons of long-distance travelling.However, it was another machine that replaced the horse as a personal means of transportation.It was called the car, and it also used the heat engine.The achievements of the car in a few decades wiped out centuries of horse transportation.Scientists realized the importance of electricity since the day it was discovered.Unfortunately, electricity was not available in nature for direct use.Scientists had to come up with ways of producing it.Here again, the heat engine was used to produce mechanical energy, which in turn can produce electricity.Today, many power-producing stations all over the world still use heat engines.They use coal or fuel oil to evaporate water, then the steam is used to turn a turbine which can produce electricity.In conclusion, heat engines proved to be one of the most important inventions.It is enough to observe the importance of industry, transportation, and electricity in our lives to know the importance of heat engines.Although the engines used today are quite different from the early ones, the same concept of changing heat into other kinds of energy is still used.46.What is the passage mainly about?A.The importance of electricity.B.The importance of heat energy.C.The importance of the heat engine.D.The importance of means of transportation.47.The underlined word "transforms" in Para.1 can be best replaced by _____.A.changes B.divides C.adapts D.breaks 48.Which of the following is TRUE after the scientist used heat engine in industry?A.Heat engines greatly promoted industry.B.More money and less time were spent in producing goods.C.Manufactured goods decreased a lot because of mass production.D.The invention of the heat engine resulted in the invention of electricity.49.Which of the following can be inferred from the passage?A.The animal-powered transportation was slow but comfortable.B.The heat engine is the greatest invention ever in the history of industry.C.The car is a means of personal transportation that is based on the heat engine.D.Before the invention of the heat engine, the animal was the only means of transportation.CI was a fat kid who grew into an overweight adult.I was constantly laughed at for being heavier than the other kids, leaving me feeling shy.I tried several diets, but none worked, and I ended up gaining weight.Another factor contributing to my weight gain was my love for cooking, especially rich, high-fat desserts, which I enjoyed preparing and, of course, eating.When I finished high school at the age of 18, I weighed 215 pounds.Lacking the self-confidence to go to a new, faraway school, I decided to stay close to home instead of going away to college.I continued with my unhealthful eating habits and felt more miserable as the weight came on, but I did nothing about it except buy larger plus-size clothes.My turning point came 10 years later at a friend's New Year's Eve party when I was at my all-time highest weight of 330 pounds.I caught my reflection in a mirror and the truth hit me: I was overweight and unhealthy, and unless I did something about it now, I would only get bigger and unhappier.After leaving the party, I thought about my past weight-loss efforts and realized they didn't work because they required me to give up foods I loved.Then I would constantly think about food and binge, abandoning the diet altogether.If I took a common-sense approach and ate smaller portions of all foods, I would be able to satisfy my hunger and not feel deprived.My biggest challenge was finding a way to fit my passion for cooking into my healthier lifestyle.At first, I tried to stay away from the kitchen to prevent myself from thinking about food.The result: Food was all I thought about.There had to be some way to combine cooking with healthful eating.I found the solution after reading several low-fat cookbooks.With some trial and error, I could modify my favorite foods and make them low in fat, yet delicious.The pounds started coming off, and when I started exercising (usually cardio and weight training five times a week), they seemed to melt away.I didn't feel deprived, and I felt free to give my body the care and attention it deserved.I lost 165 pounds over the next two years.I had many ups and downs, but I was determined to go on.Another challenge to me was not to beat myself up if I ate something that was unhealthy and to take it as a sign to abandon my healthful habits.Instead, I vowed to start again and always keep my goal in mind.Thanks to losing weight and becoming fit I am in line with my body and myself.My dream is to help others realize the ease and benefits of low-fat cooking and eating.I've created and published a book of low-fat recipes(食谱)and run workshops and seminars(研讨会)onhealthful eating.Now that I know what I can achieve when I set my mind to it, my dreams are no longer out of reach.I have finally found myself.Work out ScheduleRunning, stair climbing, step aerobics or kickboxing: 60 minutes/5 times a weekWeight training: 30 minutes/3 times a weekMaintenance Tips1.Make exercise a priority.After you work out, you'll be more likely to eat healthfully.2.You don't have to miss out on enjoying your favorite foods to lose weight.Just enjoy them in smaller portions.3.Don't beat yourself up if you slip.Get back to your regular exercise and eating program as soon as you can and forgive yourself.Have you recently made fitness a priority?50.What factors contributed to the narrator's failure in losing her weight at first?A.Her laziness in starting exercising.B.Her unwillingness to abandon low-tat desserts.C.Her passion for cooking and unhealthy eating habits.D.Her lack of maintenance tips.51.What did the narrator do as she kept on gaining weight?A.She tried a few low-fat diets.B.She decided to stay away from home.C.She bought herself clothes of larger sizes.D.She could do nothing except that she felt deprived.52.The narrator's story tells us that _____.A.it is important to have a balanced dietB.cooking by oneself will make one healthyC.trial and error is important in learning cookingD.reading cookbooks will help to build up a good eating habit53.Which of the following statements is TRUE according to the passage?A.She missed opportunity to attend college because of her shyness.B.She didn't attend the New Year's Eve party because of her weight.C.Her dream of becoming a beautiful girl came true after she lost weight.D.She didn't seriously consider losing her weight until she realized how fat she was.54.It can be concluded from the passage that _____.A.you will live a healthy life if you cook yourself every dayB.you will feel deprived if one fails to give attention to your bodyC.it is the most important thing for you to have some maintenance tips in order to keep fit D.being overweight can not only be bad for your health but also bring you much trouble in your lifeD"What's the most important thing you've done in your life?" The question was put to me during a presentation I gave to a group of lawyers.The answer came to me in an instant.It's not the one I gave, because the situation wasn't right.As a lawyer in the entertainment industry, I knew the audience wanted to hear some amusing stories about my work with well-known persons.But here's the true answer:The most important thing I've ever done occurred on October 8, 1990.I began the day playing tennis with an old friend I hadn't seen for a while.Between points we talked about what had been happening in each other's lives.He and his wife had just had a baby boy, who was keeping them up at night.While we were playing, a car came screaming up the road toward the courts.It was my friend's father, who shouted to my friend that his baby had stopped breathing and was being rushed to the hospital.In a flash my friend was in the car and gone, disappearing in a cloud of dust.For a moment I just stood there, paralyzed (呆若木鸡).Then I tried to figure out what I should do.Follow my friend to the hospital? There was nothing I could accomplish there, I convinced myself.My friend's son was in the care of doctors and nursed, and nothing I could do or say would affect the outcome.Be there for moral support? Well, maybe.But my friend and his wife both had large families, and I knew they'd be surrounded by relatives who would provide more than enough comfort and support, whatever happened.All I could do at the hospital, I decided, was get in the way.Also, I had planned a full day with my family, who were waiting for me to get home.So I decided to head back to my house and check in with my friend later, As I started my car, I realized that my friend had left his truck and keys at the courts, I now faced another problem.I couldn't leave the keys in the truck.So I decided to go to the hospitaland give him the keys.When I arrived, I was directed to a room where my friend and his wife were waiting.As I had thought, the room was filled with family members silently watching my friend comfort his wife.I went in and stood by the door, trying to decide what to do next.Soon a doctpr appeared.He approached my friend and his wife, and in a quiet voice told them that their son had died.For a long time the two held each other and cried, unaware of the rest of us standing around in pained silence.After they had calmed themselves, the doctor suggested they might want to spend a few moments with their son.My friend and his wife stood up and walked past their family.When they reached the door, my friend's wife saw me standing in the corner.She came over and hugged me and started to cry My friend hugged me, too, and said, "Thanks for being here."For the rest of that morning, I sat in the emergency room of that hospital and watched my friend and his wife hold the body of their infant son, and say goodbye.It's the most important thing I have ever done.The experience taught me two lessons.First: The most important thing I've ever done happened when I was completelyhelpless.None of the things I had learned in university, in three years of law school or in sixyears of legal practice were of any use in that situation.Something terrible was happening to people I cared about, and I was powerless to change the outcome.All I could do was stand by and watch it happen.And yet it was critical that I do just that -just be there when someone needed me.Second: The most important thing I've ever done almost didn't happen because of things I had learned in classrooms and professional life.Law school taught me how to take a set of facts, break them down and organize them.These skills are critical for lawyers.When people come to us for help, I almost forgot how to feel.Today I have no doubt that I should have leapt into my carwithout hesitation and followed my friend to the hospital.From that one experience I learned that the most important thing in life isn't the money you make, the status you attain or the honors you achieve.The most important thing in life is the kids' team you coach or the poem you write ?or the time when you're just somebody's friend.55.When he was asked about the most important thing he had done in life at a presentation, the author_______.A.felt it was not an interesting questionB.thought for a while and spoke his mindC.gave an answer from a lawyer's point of viewD.didn't give the real answer56.When he saw his friend rush to the hospital, the author could not decide whether to follow mainly because he thought ______.A.he had to stay with his familyB.his friend did not need his help at allC.he would not be of much helpD.the baby would be in the doctor's care57.It can be inferred from the author's description of the scene at the hospital that ____.A.he found that he was in the wayB.he regretted that he went too lateC.he would have felt guilty if he had not been thereD.his friend would have felt better if he had not been there58.In the story the author means to tell the reader that ____.A.you can certainly help a friend if you want toB.it is better to be there when someone needs youC.family and relatives can not take the place of friendsD.more people are a great comfort when one is in trouble59.The author learned from his own experience that ____.A.what is taught in school is usually of no useB.a lawyer cannot learn much in classroomsC.a lawyer should know people's feelings firstD.he needs to be able to feel as well as think logically60.We learn from the underlined sentence in the last paragraph that the author _____.A.is fond of writing poemsB.is going to coach the kid's teamC.is determined to make friends with everybodyD.is fully aware of the importance of being helpful to those in need第四节书面表达你校正在进行“英语读书月"活动。

高三一轮限时规范训练 必修1 3-1 酶、ATP

高三一轮限时规范训练 必修1 3-1 酶、ATP

高三一轮限时规范训练必修1第三单元细胞的能量供应和利用第1讲降低化学反应活化能的酶细胞的能量“通货”——ATP(时间:45分钟)A级基础演练1.(2013·豫南四校调研)如图中,①表示有酶催化的反应曲线,②表示没有酶催化的反应曲线,E表示酶降低的活化能。

正确的图解是( )。

解析酶可以有效降低化学反应活化能,使细胞代谢在温和条件下快速进行。

答案 B2.(2013·苏锡常镇四市一调)地沟油是废弃的动植物油脂,利用生物酶技术可以将地沟油转化为生物柴油,最适用于该过程的酶是( )。

A.蛋白酶B.淀粉酶C.脂肪酶D.解旋酶解析地沟油的主要成分是动植物油脂,故最适用于题中所述过程的酶是脂肪酶。

答案 C3.(原创题)北京师范大学贾宗超教授、郑积敏博士,在研究中发现了在同一蛋白的同一活性中心上行使相反功能的新机制,其研究成果首先公布在顶级专业期刊《Nature》上。

下列有关说法错误的是( )。

A.“活性中心”指的是酶的识别位点B.“同一蛋白”指的是酶C.每一种酶只能催化一种或一类物质的化学反应,所以活性中心与反应物是一一对应关系D.要较长时间保持酶活性,各种酶制剂都应保存在低温的条件下解析本题主要考查考生获取信息的能力。

由题干信息可知,新的科技发现证明同一种酶也可以起相反的两种作用,所以C项是错误的;低温有利于酶的保存。

答案 C4.(2013·辽宁沈阳、大连第二次联考,1)下列有关酶的叙述正确的是( )。

A.都能被蛋白酶水解而失去其活性B.都只能催化一种物质的化学反应C.高温和低温对酶空间结构的影响相同D.都能降低反应的活化能且具有高效性解析大多数酶是蛋白质类酶,少数是RNA酶,A错误;酶能催化一种或一类物质的化学反应,B错误;高温能破坏酶的空间结构,使酶永久失活,低温仅仅抑制酶的活性,不破坏酶的空间结构,C错误;酶通过降低反应的活化能来提高化学反应速率,D正确。

答案 D5.(2013·衡阳六校联考)ATP是细胞内流通的能量“通货”。

高三语文限时训练练习题五套(含答案)

高三语文限时训练练习题五套(含答案)

高三语文限时训练练习题五套(含答案)考试是检测学习成效的重要手段,孰能生巧,考前一定要多做多练。

以下是店铺为大家收集整理的高三语文限时训练练习题,希望对大家有所帮助!高三语文限时训练(一)1.下列词语中加点的字,读音全都正确的一组是( )A.刹那(shà) 倥偬(zǒng) 拗不过(niù) 翠堤春晓(dī)B.戏谑(xuè) 沏茶(qī) 闹别扭(biè) 蓦然回首(mò)C.噱头(xué) 谮言(jiàn) 揪辫子(jiū) 文以载道(zài)D.滂沱(pāng) 浸渍(zé) 压轴戏(zhòu) 折冲樽俎(zǔ)2.下列各句中,没有错别字的一句是( )A.这种善恶杂揉、明暗交织的人性,都具象在莎士比亚的戏剧中,莎士比亚希望从泥淖中拔擢卓越的品性来标明通往至善之途。

B.摩罗早年认同的是知识群体,渴望被知识分子接纳,后来发现知识人是如此丑陋,转而崇拜尼采式的个人主义,但又害怕孤独,忍受不住精神的寂寞,于是去归依基督。

C.龙应台的作品具有柔韧的硬度、感动的力量和思考的锋芒,她在完成自己梦想的同时,持续关切着弱小者的梦想,其文字不动声色地传扬着普遍性的价值观。

D.似乎是毫无征兆,一本名为《货币战争》的财经图书突然风靡大江南北:没有刀光剑影,没有撕杀格斗,被视为“第三次世界大战”的汇率大战,正加剧着各国政治经济的分化与组合。

3.下列各句中,加点的成语使用恰当的一句是( )A.期待已久的《华尔街2:金钱永无眠》终于上映了,观众们拍手称快,既被电影的史诗般的气质所征服,又对演员的演技赞不绝口。

B.这篇文章分析了历次国学热背后潜藏着的怯懦与推诿的群体心理,以及由此带来的思想惰性与责任缺失,力透纸背,引人深思。

C.中国制造业的冲击使美国失业率大幅提高,甚至导致美国经济的萧条,对这种祸起萧墙的现象,美国朝野众口一词,将解除困境的希望寄托在逼迫人民币升值上。

高三一轮限时规范训练 选修1 第3讲 生物技术在其他方面的应用

高三一轮限时规范训练 选修1 第3讲 生物技术在其他方面的应用

高三一轮限时规范训练选修1第3讲生物技术在其他方面的应用(时间:45分钟)A级基础演练1.(2013·南京名校阶段考试)提取胡萝卜素和提取玫瑰油时都需要加热,但用萃取法提取胡萝卜素时,采用的是水浴加热法,而用水蒸气蒸馏法提取玫瑰油时是直接加热,其原因是( )。

A.前者需保持恒温,后者不需要恒温B.前者容易蒸发,后者不容易蒸发C.胡萝卜素不耐高温,玫瑰油耐高温D.前者烧瓶里含有机溶剂,易燃易爆,后者是水解析用萃取法提取胡萝卜素时,由于在烧瓶中加入的萃取剂含石油醚等有机溶剂,而有机溶剂都是易燃物,直接使用明火加热,容易引起燃烧、爆炸,因此用水浴加热。

用水蒸气蒸馏法提取玫瑰油时,烧瓶内加入的是水,可以直接加热。

答案 D2.(2013·浙江四校调研)在菊花的组织培养操作完成了3~4 d后,观察同一温室中的外植体,发现有的瓶内外植体正常生长,有的瓶内外植体死亡,你认为外植体死亡的原因不可能是( )。

A.培养条件,比如pH、温度等不适宜B.接种时外植体未消毒C.接种工具灼烧后未待冷却就接种外植体D.将外植体倒插入培养基中解析一般来讲,进行植物组织培养时,培养条件应是相同的。

答案 A3.红细胞含有大量血红蛋白,我们可以选用猪、牛、羊或其他脊椎动物的血液来提取和分离血红蛋白。

下列对血红蛋白提取和分离的叙述,错误的是( )。

A.血红蛋白的提取和分离一般按照“样品处理―→粗提取―→纯化―→纯度鉴定”处理B.纯化过程中要用生理盐水充分溶胀凝胶来配制凝胶悬浮液C.粗分离时透析的目的是去除相对分子质量较小的杂质D.可经SDS聚丙烯酰胺凝胶电泳进行纯度鉴定解析应用蒸馏水充分溶胀凝胶来配制凝胶悬浮液。

答案 B4.(2012·辽宁沈阳、大连第二次联考,39)请回答下列与菊花茎段组织培养实验操作有关的问题。

(1)由于菊花茎段组织培养比较容易,故在配制MS固体培养基时,________(必需添加、不必添加)植物激素。

高三一轮限时规范训练 必修1 4-1 细胞的增殖

高三一轮限时规范训练 必修1 4-1 细胞的增殖

高三一轮限时规范训练必修1第四单元细胞的生命历程第1讲细胞的增殖(时间:45分钟)A级基础演练1.(2013·江西六校联考)下列对细胞分裂相关知识的叙述正确的是 ( )。

A.真核细胞的分裂方式有三种,有丝分裂是主要方式B.细菌、蓝藻等原核生物,其细胞只能进行无丝分裂C.经过减数分裂产生的配子,只含有一个染色体组D.生物前后代染色体数目的恒定都是通过有丝分裂实现的解析细菌、蓝藻等原核生物,其细胞只能进行二分裂;二倍体生物经过减数分裂产生的配子,只含有一个染色体组;进行有性生殖的生物前后代染色体数目的恒定是通过减数分裂和受精作用实现的。

答案 A2.(2013·福建四地六校第一次联考,2)细胞有丝分裂完成后,平均分配到两个子细胞的物质是( )。

A.线粒体DNA B.细胞核DNAC.核糖体RNA D.叶绿体DNA解析细胞有丝分裂完成后,平均分配到两个子细胞的物质是细胞核中的DNA。

答案 B3.(2013·北京西城一模,1)下图为某种植物根尖细胞分裂过程中染色质与染色体规律性变化的模式图。

下列相关判断正确的是( )。

A.①―→②过程是有丝分裂间期,此时细胞内核膜解体、核仁消失B.低温处理导致④―→⑤过程中染色单体不分开使染色体数目加倍C.⑤―→⑥过程处于有丝分裂后期,细胞中的染色体组数增加一倍D.⑥―→⑦过程中DNA解旋酶可使染色体解旋变为细丝状的染色质解析①―→②表示的是染色体的复制过程,属于有丝分裂间期,而不是核膜解体、核仁消失的前期,A错误;④―→⑤过程中染色体单体已分开成为染色体,低温抑制纺锤体形成,染色体复制,但着丝点分裂后不能被拉向两极,全部保留在同一细胞内,导致染色体加倍,B错误,C正确;⑥―→⑦过程中染色体解旋变为细丝状的染色体,不是DNA解旋酶的作用,DNA解旋酶作用于DNA分子的双螺旋结构,D错误。

答案 C4.在植物细胞有丝分裂末期两个新细胞的形成方式如下图所示。

江苏省扬中市第二高级中学2013届高三数学复习限时训练(1-7)

江苏省扬中市第二高级中学2013届高三数学复习限时训练(1-7)

高三数学复习限时训练(01)1、 设集合{}R x x x x A ∈+≤-=,112)2(2,则集合*⋂N A 中有 个元素。

2、若()35cos =+απ且⎪⎭⎫⎝⎛∈ππα,2,则()απ-2sin =__________ 3、已知正项等比数列{}n a 的前n 项和为n S ,若137a S =,则等比数列{}n a 的公比等于_____4、 已知函数2()f x x x =-,若2(1)(2)f m f --<,则实数m 的取值范围是 .5、 已知直线1l :32+=x y ,直线2l 与直线1l 关于直线x y -=对称,则直线2l 的斜率为_______6、 已知函数xbe ax x f +=)(图象上在点)2,1(-P 处的切线与直线x y 3-=平行,则函数)(x f 的解析式为_____7、 已知等差数列{}n a 的前n 项和为()21,n S a n a =++某三角形三边之比为234::a a a ,则该三角形最大角为 ____8、 已知直线0132=+++y x 与圆032-22=-+x y x 交于N M ,两点,则弦MN 的垂直平分线方程为__________9、 在锐角ABC ∆中,角A 、B 、C 的对边分别为a 、b 、c ,且满足(2)cos cos a c B b C -=. (1)求角B 的大小;(2)设(sin ,1),(3,cos2)m A n A ==,试m n ⋅ 求的取值范围.限时训练(01)参考答案1.72. 23-3.24. (1,1)-5. 0.56. 12.50.5x y x e +=--7. 1208. 3x-2y-3=09.(1)60B = , (2)17(2,]8高三数学复习限时训练(02)1、若复数2(3)(,()z a a i a R =--∈2007=2、若双曲线12222=-by a x 的两个焦点到一条准线的距离之比为3:2,则双曲线的离心率是___________3、已知点A 、B 、C 3=4=5=,则⋅+⋅+⋅的值是____.4、ABC ∆的三内角A ,B ,C 所对边长分别是c b a ,,,设向量),sin ,(C b a +=)sin sin ,3(A B c a -+=,若n m //,则角B 的大小为_____________5、已知:}2|1||{<-=x x A ,}11|{+<<-=m x x B ,若B x ∈成立的一个充分不必要条件是A x ∈ ,则实数m 的取值范围6、过点()0,4-作直线l 与圆0204222=--++y x y x 交于A 、B 两点,若AB=8,则直线l 的方程为______7、已知||1a = ,||2b = ,()a a b ⊥+,则a 与b 夹角的度数为 .8、若]2,0[πθ∈,且54sin =θ,则2tan θ= 9、已知向量a = (1,1),向量b 与向量a 的夹角为34π,且a ·b = -1.(1)求向量b ;(2)若向量b 与q =(1,0)的夹角为2π,向量p =2(cos ,2cos )2CA ,其中A ,C 为△ABC 的内角,且A + C =23π,求|b + p |的最小值.限时训练(02)参考答案12、53、 25-4、π655、),2(+∞ 6.、 020125=++y x 或4-=x7、23π 8、21 9、(1)b =(-1,0)或b =(-1,0).;(2)22高三数学复习限时训练(03)1、函数x x y 22-=的定义域为{}3,2,1,0,那么其值域为_____2、设复数1212,()z i z x i x =-=+∈R ,若12z z ⋅为实数,则x = .3、已知{}n a 为等差数列,且74321,0a a a -=-=,则公差d =4、有四个游戏盘,将它们水平放稳后,在上面扔一颗玻璃小球,若小球落在阴影部分,则可中奖,小明要想增加中奖机会,应选择的游戏盘的序号5、设命题014,::22>++∈∀<cx x R x q c c p 对和命题,若p 和q 有且仅有一个成立,则实数c 的取值范围是 6、1tan 2a =,则sin cos a a = 7、过定点P (1,2)的直线在x y 轴与轴正半轴上的截距分别为a b 、,则422a b +的最小值为 .8、设等比数列{}n a 中,前n 项和为n S ,已知38S =,67S =,则789a a a ++= .9、已知函数()ln f x x ax =-()a ∈R . (Ⅰ) 求函数()f x 的单调区间;(Ⅱ) 当a >0时,求函数()f x 在[1,2]上最小值.限时训练(03)参考答案1. {}0,1,3-2. 21-3. -124. (1)5. 121021<≤≤<-c c 或6. 527. 32 8.819. (Ⅰ) 1()f x a x '=-(0x >),①当a ≤ 0时,1()f x a x'=->0, 故函数()f x 增函数,即函数()f x 的单调增区间为(0,)+∞. ②当0a >时,令1()0f x a x '=-=,可得1x a=, 当10x a <<时,1()0ax f x x -'=>;当1x a>时,1()0ax f x x -'=<, 故函数()f x 的单调递增区间为1(0,]a,单调减区间是1[,)a +∞.(Ⅱ)①当11a≤,即1a ≥时,函数()f x 在区间[1,2]上是减函数,∴()f x 的最小值是(2)ln 22f a =-.②当12a ≥,即12a ≤时,函数()f x 在区间[1,2]上是增函数, ∴()f x 的最小值是(1)f a =-.③当112a <<,即112a <<时,函数()f x 在1[1,]a 上是增函数,在1[,2]a是减函数. 又(2)(1)ln 2f f a -=-,∴当1ln 22a <<时,最小值是(1)f a =-;当ln 21a ≤<时,最小值为(2)ln 22f a =-.综上可知,当0ln 2a <<时, 函数()f x 的最小值是min ()f x a =;当l n2a ≥时,函数()f x 的最小值是min ()ln 2f x =.高三数学复习限时训练(04)1、=︒+︒-︒570sin 2135cos 315sin 。

山西省新人教A版2013届高三上学期限时训练数学(文)试题2

山西省新人教A版2013届高三上学期限时训练数学(文)试题2

2013届高三上学期限时训练数学(文)试题2本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,满分 100分,考试时间50分钟.第Ⅰ卷(选择题 共48分)一、选择题(本大题共6小题,每小题8分,共48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)6.设,,l m n 是三条不同的直线,,,αβγ是三个不同的平面,以下四个命题: ①若γα⊥,γβ⊥,则//αβ;PABCDOM②若α⊂m ,α⊂n ,//m β,//n β,则//αβ; ③若//αβ,α⊂l ,则//l β;④若m β⊂,n 是l 在β内的射影,m l ⊥,则m n ⊥;⑤若,//m m n α⊂,则//n α;其中真命题的个数为 【 】 A .1 B .2 C .3 D .4 二、填空题 (本大题共4个小题,每小题8分,共32分)7. 若一个球的体积为43π,则它的内接正方体的表面积是_______ _. 8.如图,一个圆柱和一个圆锥的底面直径..和它们的高都与一个球的直径相等,这时 圆柱、圆锥、球的体积之比为 .9、在正三棱锥ABC P -中,D 为PA 的中点,O 为ABC ∆的中心,给出下列四个结论:①OD ∥平面PBC ; ②OD ⊥PA ; ③OD ⊥BC ; ④OD PA 2=. 其中正确结论的序号是 .10.如图所示,是一个由三根细铁杆PA ,PB ,PC 组成的支架, 三根铁杆的两两夹角都是︒60,一个半径为1的球放在支架上, 则球心到P 的距离为____________三、解答题(共20 分要求写出详细解答过程) 11. (本题满分10分)如图,在棱长为2的正方体1111-D C B A ABCD 中,E 、F 分别是BD 、1BB 的中点. ①求证:EF ∥平面CD B A 11; ②求证:EF ⊥1AD .12.(满分10分)棱锥ABCD P -的四条侧棱长相等,底面ABCD 为正方形,O 为对角线AC 和BD 的交点,M 为PB 的中点. 求证:①PD ∥面ACM ;②PO⊥面ABCD;③面ACM⊥面BPD. .。

高三一轮限时规范训练 必修3 1-1 人体的内环境与稳态

高三一轮限时规范训练 必修3 1-1 人体的内环境与稳态

高三一轮限时规范训练必修三第1讲人体的内环境与稳态(时间:45分钟)A级基础演练1.(2013·南京四校联考)下列对内环境稳态实质的描述是( )。

A.神经—体液—免疫调节网络是机体维持稳态的主要调节机制B.稳态是各个器官、系统协调活动的结果C.温度、pH、渗透压等理化性质呈现动态平衡D.稳态是体内细胞生活不可缺少的条件解析A、B选项描述的是稳态的调节机制,稳态是在神经—体液—免疫调节作用下,使各个器官、系统协调活动,共同维持内环境的相对稳定状态;D选项属于稳态的意义。

因此A、B、D不符合题干要求。

答案 C2.(2013·潍坊、东营、淄博、滨州四市联考)以下关于动物内环境和稳态的叙述,错误的是( )。

A.葡萄糖、生长激素、抗体属于人体内环境的成分B.若内环境稳态不能维持,机体的正常生命活动就会受到威胁C.血浆渗透压的大小主要取决于血浆中无机盐和蛋白质的含量D.人体剧烈运动时产生的乳酸会导致血浆pH显著下降解析葡萄糖、生长激素、抗体都可以存在于细胞外液中,因此属于内环境的成分,故A正确;内环境稳态的维持是机体进行正常生命活动的基础,故B正确;血浆中含有多种物质如水分、血浆蛋白、无机盐等,其中血浆蛋白和无机盐的含量是决定血浆渗透压的主要因素,故C正确;人体剧烈运动时会产生大量乳酸,但是在血浆中缓冲物质的作用下,血浆pH维持在7.35~7.45,不会出现显著下降,故D错误。

答案 D3.下图所示为人体体液相关组成及各成分间的关系,请依次填出①~⑤相关内容( )。

A.细胞内液血浆组织液淋巴细胞外液B.细胞外液血浆淋巴组织液细胞内液C.细胞外液组织液血浆淋巴细胞内液D.细胞内液血浆淋巴组织液细胞外液解析根据题图所示,①由②③④构成,属于细胞外液。

②与④可以相互渗透,④只能向③渗透,③只能向②渗透,则可推知②为血浆,③为淋巴,④为组织液。

组织液与细胞内液可以相互渗透,⑤为细胞内液。

答案 B4.毛细血管壁细胞和毛细淋巴管壁细胞生活的内环境分别是( )。

山西省忻州市2013届高三数学上学期限时训练试题24 理 (无答案)新人教A版

山西省忻州市2013届高三数学上学期限时训练试题24 理 (无答案)新人教A版

忻州实验中学2013届高三上学期限时训练数学(理)试题24 本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,满分 100分,考试时间50分钟.第Ⅰ卷(选择题 共48分)一、选择题(本大题共6小题,每小题8分,共48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)4.下列在曲线sin 2()cos sin x y θθθθ=⎧⎨=+⎩为参数上的点是【 】 A .)2,-21( B .)3(2, C .)3(1, D .)21,43(-5.参数方程22sin 1cos 2x y θθ⎧=+⎨=-+⎩(θ为参数)化成普通方程是【 】 A.240x y -+= B.240x y +-=C.[]240,2,3x y x -+=∈ D.[]240,2,3x y x +-=∈6.直线45395x t y t ⎧=⎪⎪⎨⎪=-+⎪⎩(t 为参数)与圆2cos 2sin x y θθ=⎧⎨=⎩(θ为参数)的位置关系是【 】A.相离 B.相切 C.过圆心 D.相交不过圆心二、填空题 (本大题共4个小题,每小题8分,共32分)7.已知点M 的直角坐标()5,1,0M ,则它的柱坐标为 ____ .8.在直角坐标系x o y 中,已知曲线C 的参数方程是2cos 22sin x y θθ=+⎧⎨=⎩(θ是 参数),若以O 为极点,x 轴的正半轴为极轴,则曲线C 的极坐标方程 可写为 .9.若直线b x y +=与曲线⎩⎨⎧==θθsin cos y x θ(为参数,且)22πθπ≤≤-有两个不同的交点,则实数b 的取值范围是__________.10、若直线l的极坐标方程为cos()4πρθ-=,圆C :cos sin x y θθ=⎧⎨=⎩(θ为参数) 上的点到直线l 的距离为d ,则d 的最大值为 .三、解答题(共20 分要求写出详细解答过程)11.(10分)在极坐标系中,从极点O 作直线与另一直线:cos 4l ρθ=相交于点M , 在OM 上取一点P ,使12=⋅OP OM .①求点P 的轨迹方程; ②设R 为l 上任意一点,试求RP 的最小值.12.(10分)在平面直角坐标系xoy 中,直线l 的参数方程为23(24x t t y t=--⎧⎨=-⎩为参数),它与曲线C :1-)2-(22=x y 交于A 、B 两点. ①求AB 的长;②在以O 为极点,x 轴的正半轴为极轴建立极坐标系,设点P 的极坐标为 3)4π,求点P 到线段AB 中点M 的距离.。

江西省定南中学2013届高三文科语文晨练1 限时30分钟

江西省定南中学2013届高三文科语文晨练1 限时30分钟

定南中学2013届高三文科语文晨练1班级姓名一、(18分,每小题3分)1.下列词语中,加点的字读音全都正确的一组是()A.发轫.(rèn)熨.帖(yù)泄露.(lòu)转弯抹.角(mò)B.湍.急(tuān)蛰.伏(zhé)脂.肪(zhī)掎.角之势(jī)C.监.生(jiàn)澎湃.(pài)伛偻.(lóu)顺蔓.摸瓜(wàn)D.栈.道(zhàn)瓦菲.(fēi)狙.击(zǔ)半身不遂.(suí)2.下列词语中,书写规范正确的一组是()A.沧桑妥贴谂知头昏脑涨 B.寒暄树阴余晖哄堂大笑C.编纂炫丽缔造安土重迁 D.执著合龙刹时千金市骨3.下列各句中,加点的熟语使用不恰当...的一项是()A.对于消防工作,我们一定要曲突徙薪....,切不可事到临头才手忙脚乱,导致灾祸的发生。

B.钱钟书先生用文言写成的《谈艺录》《管锥编》博大宏深,技巧精湛而多变化,其用词也运斤成风....,最可表明文言词汇的活力和生命力。

C.一所大学的价值是与祖国的命运休戚相关....的,培养出的兴业之士、治国之才、学术大师是使一个国家繁荣昌盛的重要力量。

D.洪磊说,中国改革开放30多年来人权事业取得了举世瞩目的巨大进步,而美方所谓年度人权报告对他国内政说三道四....,涉华部分无视事实,充满偏见,颠倒黑白,不值一驳。

4.下列各句的表达上没有..语病的一句是()A.据《菲律宾星报》25日报道,菲律宾香蕉出口商表示,中国政府尽管允许合格的菲水果进入中国市场,但中国无人购买菲律宾香蕉。

B.无论是杭州的“最美妈妈”,还是黑龙江的“最美老师”,抑或是抚州的“最美爸爸”,他们都不是什么惊天地、泣鬼神的人物,但他们演绎了人世间最真情、最温馨的事情。

C.“我自横刀向天笑,别看广告,看疗效!”经典名句与小品台词混搭出的“本山体”以独具个性的风格为无数网友所倾倒。

2013届高三限时训练(3)

2013届高三限时训练(3)

2013届高三限时训练(3)(45分钟)班级姓名得分一.语言基础知识1.下列词语中加点的字,每对读音都不相同的一组是(3分)()A.弄.堂/玩弄.打烊./佯.装包扎./驻扎.弱冠./沐猴而冠.B. 创.刊/惩创.攒.动/积攒.皮革./病革.扛.活/力能扛鼎.C. 哺.育/果脯.跻.身/侪.辈鱼鳔./保镖.遭殃./怏怏..不乐D. 阆.苑/稂.莠毗.连/纰缪.札.记/轧.钢裨.将/大有裨.益2.下列词语中,字形和加点的字读音全都正确的一项是(3分)()A. 活性炭韬光养晦冗.(rǒng)长唾.(chuí)手可得B. 谐奏曲咄咄逼人怆.(chuàng)然怙恶不悛.(qǔn)C. 威慑力暇不掩瑜攫.(jué)取恪.(kè)尽职守D. 笑眯眯按图索骥荒谬.(miù) 返璞.(pú)归真3、下列各句中,加点的成语使用不恰当的一项是(3分)()A.李政道和杨振宁二人之间的纷争,旁人绝难置喙,也不可能以息事宁人....的方式解决,最终还是必须断一个是非曲直的。

B.美国飓风、智利地震、印尼海啸……当世界各地灾难频繁到来的时候,中国始终以强国的姿态伸出援手鼎力相助....。

C.美国2012年总统选举共和党党内预选1月3日启动,前马萨诸塞州州长罗姆尼先声夺...人.,打出“美满婚姻牌”。

D.李娜获得法网公开赛女单冠军意味着中国在世界网坛上的地位有了新的突破,假以时...日.,国际网坛定是中国的天下。

4.下列各句中,没有语病的一句是(3分)()A.“7•23”甬温线重大铁路交通事故调查,不仅要查清直接原因,还要追根溯源,查清设计、制造、管理等方面的源头性问题。

B.随着综合国力的提高,特别是科学技术和造船工业能力的提高,才能够使一个国家有能力建造航母。

从这个意义上来说,航空母舰是一个国家综合实力的体现。

C.日前教育部发出通知,要求各地各高校要抓紧网络招聘和现场招聘活动,帮助毕业生尽快落实就业岗位;对未就业毕业生进行集中培训。

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2013高三限时训练1
1、下面语段中画线的词语,使用不恰当的一项是
在许多人眼里,美术馆一直是阳春白雪的代名词,是少数有艺术造诣的人出入的地方,里面陈列的通常是看不太懂的作品。

但如果你到台湾的美术馆去转转,你一定不会失望。

台湾的美术馆数量众多,有大有小,风格迥异。

其中规模最大的两处是新北市的朱铭美术馆和台中市的“台湾美术馆”。

置身其中,你会发现那里艺术不再是高高在上的物品,而是像站立在你身边懂你的知心朋友。

A.阳春白雪 B.通常 C.迥异 D.高高在上
2、下列各句中,加点的成语使用恰当的一项是(3分)
A.他性格比较内向,平时沉默寡言,但是一到课堂上就变得振振有词,滔滔不绝,所以他的课很受学生欢迎。

B.泰山几千年来都是文人墨客们向往的圣地,在浩如烟海的中华典籍中,留下了众多颂扬泰山的诗词文章。

C.张经理语重心长的一席话,如电光石火,让小余心头淤积的阴霾顿时消散,再次燃起争创销售佳绩的激情。

D.迅速崛起的快递行业,经过几年的激烈竞争,大部分企业都已经转行或倒闭了,市场上只剩他们几家平分秋色。

3、下列各句中,加点的成语使用恰当的一项是(3分)
A.荆山之巅的大禹雕像头戴栉风沐雨的斗笠,手握开山挖河的神锸,脚踏兴风作浪的蛟龙,再现了他与洪水搏斗的雄姿。

B.京剧大师梅兰芳先生不仅在舞台上风姿绰约,在日常生活中也气度不凡,无论何时何地,他总能让人为之倾倒。

C.最后几年,由于市场竞争加剧,小家电生产企业加速整合,目前只剩下五六家分庭抗礼,占据了全省60%的市场份额。

D.家庭条件的优越和父母的溺爱,养成了他傲慢狂妄的个性,不管对谁都侧目而视,一副天不怕地不怕的小霸王样子。

4、下列各句中,没有语病的一句是(3分)
A.对于传说中这类拥有异常可怕力量的动物,尚武的古代欧洲人的真实心态恐怕还是敬畏多于憎恶的。

B.杜绝过度治疗,除了加强宣传教育外,还要靠制度保障医疗机构正常运转,调控盲目扩张
的逐利行为。

C.作者观察细致,一泓清潭、汩汩流水、郎朗歌声,都能激发他的灵感,都能从中找到抒情叙事的切入点。

D.过于重视教育功能,文学作文会出现理性捆绑感性,思想大于形象,甚至全无艺术性,变成干巴巴的说教。

5、下列各句中,没有语病的一句是(3分)
A.很多企业都认识到,为了应对消费需求和竞争格局的变化,必须把改进服务提到与研发新产品同等重要的位置上。

B.一般人常常忽略的生活小事,作者却能够慧眼独具,将之信手拈来,寻找其叙述的价值,成为小说的有机组成部分。

C.在90后的青少年中,科幻迷越来越多,这显示了科幻文化正在崛起,是对长久以来孩子们缺失的想象力的呼唤。

D.数字化时代,文字记录方式发生了重大变化,致使很多人提笔忘字,从此以往,将影响到汉字文化能否很好地传承。

6、下列各句中,没有语病的一句是
A.波士顿马拉松赛的两声爆炸,无疑给大型体育比赛的安保工作敲响了警钟,如果确保赛事安全,成为组织方必须面对的新难题。

B.对那些刻苦训练的年轻运动员,即使他们在比赛中偶尔有发挥失常的情况,依然应该受到爱护,绝不能一棍子就把人打倒。

C.这次大会的志愿者服务工作已经完成了,我们咀嚼、体味这一段经历,没有失落感,有的只是在平凡事务中享受奉献、成长与幸福。

D.深陷债务危机的希腊和西班牙,失业率已经超过20%,主要是由于这两个国家经济衰退和实施大规模财政紧缩政策所导致的。

7、依次填入下面一段文字横线处的语句,衔接最恰当的一组是(3分)
当代艺术博物馆近日举办名为“风物”的展览,展出了几位画家、摄影师的作品。

_______,_______。

_______,_______,_______,_______,能启发我们发现身边的奇景和诗意。

①因此无论多么微不足道的事物都可变成艺术主题
②展出的作品大部分都体现出细节带出重点的风格特点
③彰显出艺术独具的神奇力量
④作品展示的都是他们在美国南部腹地、新西兰北岛旅行时留下的记录
⑤内容从自然环境、建筑、各类标志,到人物、室内布置,覆盖面很广
⑥而且带有叙事意味,每件作品都像日常世界的一个短篇故事
A.②⑥⑤④③①B.②③①④⑤⑥
C.④⑤②①⑥③D.④⑥⑤①③②
8、依次填入下面一段文字横线处的语句,衔接最恰当的一组是(3分)
在学校的日子里,我没有什么特别的感觉,________,________,________,________,________,________。

我默默地注视着学校红色的大门,由衷地感谢她带给我的一切。

①很多时候你可能觉得今天跟昨天没什么不同
②这时你可能非常留恋过去的日子
③突然发现它写得真好
④你回过头来,其实一切都在改变
⑤不禁哼出一句“月亮的脸偷偷地在改变”
⑥现在要离开这个工作了七年的学校
A.①②④⑤⑥③B.①⑥②⑤③④C.⑥②⑤①④③D.⑥⑤③①④②
9、依次填入下面一段文字横线处的语句,衔接最恰当的一组是(3分)
岳麓书院已有一千多年的历史,_______,_______,_______,_______,_______,_______,特别是各处悬挂的历代楹联,散发出浓郁的文化气息。

①院落格局中轴对称、层次递进
②给人一种庄严、幽远的厚重感
③它集教学、藏书、祭祀于一体
④主体建筑头门、大门、二门、讲堂、御书楼集中于中轴线上
⑤门、堂、斋、轩、楼,每一处建筑都很古朴
⑥讲堂布置在中轴线的中央,斋舍、专祠等排列于两旁
A.②③④⑥⑤①B.②⑥④①⑤③C.③①④⑥⑤②D.③②⑥④①⑤
10、给下面语句排序,衔接恰当的一项是(3分)
①因为较弱的电磁辐射,也会对人的神经系统与心血管系统产生一定的干扰。

②人的大脑和神经会产生微弱的电磁波,当周围电器发出比它强数百万倍的电磁波时,人的神经活动就会受到严重干扰。

③即使在不太强的电磁波环境中工作和生活,人也会受到影响。

④如果长时间处于这种强电磁波的环境中,人会出现头痛,注意力不集中、嗜睡等症状,强电磁辐射会使心血管疾病加重、神经系统功能失调。

A.④①②③B.②③①④C.④③②①D.②④③①
11、仿照下面的句子,再写两个句子。

我们读王冕的《墨梅》,读出了梅花不合世俗的傲骨;
______________________,________________________________;
______________________,________________________________。

12、依照下面的示例,自选话题,另写两句话,要求句式与示例相同。

面对清秋,欧阳修低吟“万叶千声皆是恨”,刘禹锡却高唱“我言秋日胜春朝”。

答:___________________________________________________________
________________________________________________________________
13、将下面三个句子整合为一个单句。

(可调整语序,适当增删词语,不能改变原意)
①中国书法是以笔、墨、纸等为主要工具、材料书写汉字的一种艺术实践。

②中国书法在完成信息交流实用功能的同时表现出中国人特有的思维方式、人格精
神与性情志趣。

③中国书法特有的造型符号和笔墨韵律融入了人们对自然、社会、生命的思考。

答:______________________________________________________________
__________________________________________________________________ 14、王孝椿准备6月16日在阳光饭店为爸爸过70岁生日,想请爸爸的老战友刘妙山夫妇那天中午12点来一起吃饭。

请以王孝椿的名义给刘妙山夫妇写一份请柬。

要求称呼得体,表述简明,措词文雅。

(不超过40个字)(5分)
_______:
_______________________________________________
13、概括下面语段的主要信息,不超过50个字(含标点符号)。

(5分)
近日,一些网友发布信息,号召节约粮食。

随后,新浪网发起“光盘行动”:拒绝浪费,从我做起,晒出自己吃光的盘子,一起向舌尖上的浪费说“不”,争做节约达人。

该信息被转发约5000万次。

紧接着,人民网也表示支持“光盘行动”,倡议网民“拒绝浪费,珍惜粮食。

今天不剩饭,打包离开,从我做起”。

新华网、光明网及其他各大网站也纷纷关注和转载。

很快,活动参与者在北京实地发放宣传单6万多份,在餐饮企业张贴海报5000余张,天津、石家庄、呼和浩特等城市志愿者也纷纷发放宣传资料。

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