高中题库

[单选题]15O和14O是氧元素的两种核素，NA表示阿伏加德罗常数。下列说法正确的是A．15O2和18O2互为同分异构体B．16O和18O核外电子排布方式不同C．通过化学变化可以实现16O与18O间的相互转化D．标准状况下，1.12L16O2和1.12L18O2均含0.1NA个氧原子

[单选题]蚕豆根失细胞有含3H标记的胸腺嘧啶氧核苷培养基中完成一个细胞周期，然后在不含放射性标记的培养基中继续分裂至中期，其染色体的放射性标记分布情况是A．每条染色体的两条单体都被标记B．每条染色体中都只有一条单体被标记C．只有半数的染色体中一条单体被标记D．每条染色体的两条单体都不被标记

[单选题]溶酶体具有细胞内消化功能，其内部水解酶的最适pH在5.0左右。下列叙述错误的是A．溶酶体内的水解酶是由核糖体合成的B．溶酶体执行功能时伴随其膜组分的更新C．细胞质基质中的H+被转运到溶酶体内需消耗能量D．正常生理状态下溶酶体对自身机体的细胞结构无分解作用

[单选题]下列推断正确的是A．SiO2是酸性氧化物，能与NaOH溶液反应B．Na2O、Na2O2组成元素相同，与CO2反应产物也相同C．CO、NO、NO2都是大气污染气体，在空气中都能稳定存在D．新制氯水显酸性，向其中滴加少量紫色石蕊试液，充分振荡后溶液呈红色

[单选题]相对原子质量：H 1 O16 S 32 Fe 561．下列实例与基因的作用无关的是A．细胞分裂延迟植物衰老B．极端低温导致细胞膜破裂C．过量紫外线辐射导致皮肤癌D．细菌感染导致B淋巴细胞形成效应B（浆）细胞

[主观题]第二节 书面表达（满分25分）英语中“please.” “In you”“sorry”等礼貌用语具有增进友谊，改善关系、化解矛盾神奇的力量，因而被称为“ ”。请 “Magin Power of Polite Words”为题写一篇100词左右的英语作文。代表裁不限（叙述文评论文说论文……）

[单选题]下列符合现代生物进化理论的叙述是A．物种的形成可以不经过隔离B．生物进化过程的实质在于有利变异的保存C．基因突变产生的有利变异决定生物进化的方向D．自然选择通过作用于个体面影响种群的基因频率

[单选题]This pastge is mainly about ______ .A．the development of body languageB．the special role humans play in natureC．the power to convey information to othersD．the difference between humans and animals in language use

[单选题]What feature of “body language”mentioned in the passage is common to both humans and animals?A．Lifting beads when sad.B．Keeping long faces when angry.C．Bristling hair when ready to attack.D．Bowing heads when willing to obey.

[单选题]E．E．very day we experiencc one of the wonders of the world around us without even realizing it It is not the amszing complexity of television. Nor the impressive tcchnology of transport The universal wonder we share andE．xperience is our ability to m

[单选题]What is the author’s attitude towards the modem teehnology?A．CriticalB．ObjectiveC．OptimisticD．Negative

[单选题]What can be inferred from Paragraph 3?A．Body language is uniqun to humans.B．Animals express emotions just as humans do.C．Humans have other poeers of communication.D．Humans are thfferent from animals to some degree.

[单选题]What does the pa mge mainly diseuss?A．The present and pad timesB．Machin and human beingsC．Imaginations and inventionsD．Modem teehnology and its influenec

[主观题]第一节 对话填空（共10小题;每小题1分，满分10分）请认真阅读下面对话，并根据各题所给首字母的提示，在答题卡上标有题号的横线上，写出一个英语单词的完整、正确形式、使对话通顺。M＝MumS＝SaraP＝Peter(When Sara came home from work, she found her mother in an anxious state.)S:What’s wrong, Mum? You seem upset.M:It’s your (76) y sister Jill. Sh

[单选题]Socat snared wih Confucius the idea the__________ .A．all men were equal when they were bornB．the lowr classes should be ruled gby the upper classC．the purpose of man was to seek freedom and wisdomD．people should not ask others to do what they did not

[单选题]This passage is organized in the pattem of _____ .A．time and eventsB．comparison and con astC．cause aatD．defignton and rlwomiration

[单选题]D．Modcm inventions have speeded up people’s lives amazingly. Motor-cars cover a bundred miles in little more than an hour. Aireraft cross the world a day, while computers operate at lightning speed. Indeed, this love of speed seems never-ending. Ever

[单选题]What does“the days”in Paragraph 3 refer to?A．I maginary lifeB．Simple life in the pastC．Times of inventionsD．Time for constant activity

[单选题]Which of the following applieans is most likely to be employed?A．A school teacher with a master’s degree.B．A university graduate in computer science.C．A director from a with a master’s degree.D．A eler company

[单选题]If you apply for this position, you ean do all EXCEPT______A．ask an agency for an application formB．dial 020 8971 7482 for more informationC．email hr@ org for an applieation packD．send in your applieation before 4 Auguse 2010-6-9

[单选题]One of the duties of the person to be appointed is_______ .A．taking eharge of researchB．seeking pen ersh lot the unionC．mannaging a of or four membersD．runing a company

[单选题]What made some people different from others according to Confucius?A．FamilyB．PotentialC．KnowledgeD．Community

[单选题]C．Kong Zi called Confucius(551-479 B.C.).and Soerates(469 B.C.)lived only a hundred years apart,and during their lifetimes there was no contact between China and Greece, but it is interesting on look at how the world that each of there great philosop

[单选题]53____A．rollinB．floatingC．drawingD．flashing

[单选题]52____A．developenB．apendC．spreadD．ladea

[单选题]55_____A．tuneB．voiceC．soundD．tone

[单选题]Which of the following is NOT mentioned about the swarm of bees in the passage?A． They crowded like a black cloud.B． They shocked and terrified Andy.C． They tried to attack Andy in a mass.D． They made Andy stay in hospital for two days.

[单选题]Which of he tollowing can best describe Andy’s escape from the becs?A． No pain no gains.B． Once bitten, twice sheC． Where there is a will, there is a way.D． In time of dangct, one’s mind works fast.

[单选题]54_______A．pointedB．returnedC．brokeD．rose

[单选题]H．ow did Andy avoid the bees in the end?A． He asked Mr. Nelson in help.B． He hid himself under the water.C． He rushed into the Nelson house.D． He rode off in the oppossnte ditcction.