2020年高考英语一轮精品复习学案:Unit2 Cloning(新人教版选修8)

发布时间:2020-04-12 22:32:45

【高考新动向】

【考纲全景透析】

【重点单词】

1. differ vi. 不同;

difference n. 不同之处 different adj. 不同的

A differs from B in... AB……方面不同

A differs with B about/on/over... AB……意见相左

1). Their house differs from mine in having no garage. 他们的房子与我的不同,区别在于他们的没有起车库。

2). The two sides still differ with each other over the question of pay. 双方在报酬的问题上仍各持己见。

即境活用

Thoughts of Oriental(东方人) differ much____ westerners in a number of ways.

A. between B. between those C. from D. from those of

【解析】选D 考查differ的用法此处应该用指代的词,结构和thoughts of一样,但用those代替

2. undertake vt. (undertook; undertaken) 着手;从事;承担;同意,答应,保证(后接to do)

She undertook the organization of the whole scheme.

她负责整个计划的组织工作。

He undertook to finish the job by Friday.

他答应在星期五以前完成那工作。

I can undertake that you will enjoy the trip .

我保证你会喜欢这次旅游。

3. object vi. 不赞成;反对;n.物体;目标

We object to being treated like this .

我们抗议这种待遇。

I objected that he was too young for the position .

我提出反对意见他太年轻不合适这个职位。

My main objection to the plan is that it costs too much .我反对该计划的主要理由是它费用太高。

4. forbid vt. (forbade or forbad; forbidden) 禁止;不准;阻止妨碍

forbid sth./ doing sth. 禁止(做)某事

forbid sb. to do sth. 禁止某人做某事

forbid sb. from doing sth. 禁止某人做某事

forbid sb sth禁止某人某事

forbid that 禁止……(从句中常用should+动词原形)

Its forbidden to do sth. 做某事是禁止的

Forbidden City紫禁城

His parents forbid him wine. 他的父母不准他喝酒

Smoking is forbidden in the concert hall. 演奏厅内不准吸烟

I forbid you to go swimming. 我不准你去游泳

Most of the parents agree to forbid their children to smoke.

大多数父母都同意禁止自己的孩子抽烟

【提醒】forbid后面不能直接跟动词不定式作宾语,而是跟动名词作宾语,单可以用forbid sb. to do sth.

【举一反三】类似结构动词:allow, permit, advise

【即境活用】The students are forbidden, unless they have special passes,____after11 p.m.

A. from staying out B. to stay out C., staying out D. stay out

答案:B

5. own; (账、钱、人情等);归功于;感激,感恩

1). He owes his father £50. = He owes £50 to his father. 他欠他父亲50英镑。

2). We owe this discovery to Newton. 我们的这一发现归功於牛顿。

即境活用 根据句子的要求在括号里填入适当的介词。

1). How much do I owe you _______ the groceries?

2). He owes his success more _______ luck than _______ ability.

3). I owe a lot _______ my wife and children.

Keys: 1). for 2). to; to 3). To

6. bother vt. 打扰 vi. 操心 n. 烦扰

I dont want to bother you with my problems.

我不想让你因为我的问题而担心。

Whats troubling you money problems?

什么事令你忧虑不安---经济问题吗?

These flies are annoying me.

这些苍蝇一直在烦我。

7. resist vt.抵抗,忍住(多与cannot, couldnt连用)

He is in good health- he is able to resist diseases.

他身体健康,能抵抗疾病。

I couldnt resist having a look at her diary.

我忍不住看了一眼她的日记。

There has been a lot of resistance to this new law.

这项新的法规已经遇到很多的抵制。

【即境活用】She is overweight, but she cant____the temptation to eat more delicious food.

A. forbid B. attach C. allow D. resist

答案:D

【重点短语】

1. pay off 得到好结果,取得成功(常用主动);偿清债款;付清工资解雇

相关短语】 pay短语:

pay for……的钱;为……而付出代价

pay back sth. (pay sb. back sth.) 偿还

pay sb. (...) for sth. 因某事而付某人……

pay sb. (...) to do sth. 付某人(……)去做某事

1). At last, his hard work paid off. 最后,他的努力得到了回报。

2). Did your plan pay off? 你的计划成功了吗?

2. in favor of 赞成;支持;对……有利

in favour of 赞成,同意

in sb.'s favour 对某人有利

do sb. a favour /do a favour for sb. 帮某人忙

do sb.. the favour to do sth./do sb. a favour by doing sth.帮忙做

【点拨】 表示“支持,赞同某人/某事”除用in favour of之外;其它常用:be for sb./sth. stand by; stand on one’s side等。表示“不支持,赞同某人/某事”be against sb./sth.

【拓展延伸】 favor vt. 赞同;支持

The child favors his father with his brown eyes.

这个孩子的棕色眼睛像他的父亲

【即境活用】I dont like to ask people for help as a rule but I wonder if you could____me a favour.

A. make B. do C. find D. get

答案:B

3. be in good/poor/excellent condition 好的﹑坏的﹑极佳的状况

相关短语】 condition 短语:

out of condition健康状况欠佳

working/living/studying conditions工作、生活、学习环境

on condition (that)... ……条件下;倘若……

on no condition 一点也不; 决不

1). The ship is not in a condition/is in no condition to make a long voyage. 此船的现状不适宜远航。

2). The car is still in excellent condition. 这小车状况极佳。

即境活用 根据句子的要求在括号里填入适当的介词。

1). The car has been well maintained and is _______ excellent condition.

2). He’ s _______ excellent condition _______ a man of his age.

3). I had no exercise for ages; I’ m really _______ condition.

4). You can go out _______ condition that you wear an overcoat.

Keys: 1). in 2). in; for 3). out of 4). on

【重点句型】

1. The fact that she seemed to develop normally was very encouraging. 她(多莉羊)似乎生长正常的事实很鼓舞人心。

“that she seemed to develop normally”是一个同位语从句,作the fact的同位语。同位语从句一般由that引导,常放在facttruthnewsinformationideathoughthopesuggestionadvicereplyremarkreport等名词后面,说明该名词的具体内容。当先行词是problemquestion或当主句是表示疑问或否定意思时,连接词要用whether或其他的疑问代词或副词。如:

1). The news that he has been elected president of the United States is true. 他当选美国总统的消息是真的。

2). The question whether we should continue to do the experiment has not been answered yet.

我们是否该继续实验的问题还没有被解决。

3). I have no idea where the new library will be built. 我不知道新图书馆将要建在哪。

即境活用】在括号里填入适当的连接词。

1). The truth _______ heavy objects and light objects fall at the same speed is known to us all.

2). The question _______ we need to spend more time on the project has not been discussed.

3). The explanation _______ he had met with an accident on his way was acceptable.

Keys: 1). that 2). whether 3). that

【热点难点全析】

同位语 the Appositive

同位语的定义:同位语是句子成分的一种。它位于名词、代词后面 , 说明它们的性质和情况 , 它可以由名词、代词、名词性短语或从句充当。

同位语的表现形式有以下几种:

①名词

Tom, our monitor, is a handsome boy. 汤姆,我们班长,是个英俊的小伙子

②代词

I myself will do the experiment. 我将亲自做这项实验

③数词

She is the oldest among them six. 她是他们 6 人中年纪最大的

④从句

He told me the news that the plane had exploded. 他告诉我飞机爆炸的消息

⑤由 such asthat is 引导

Some , subjects, such as maths and physics, are very difficult to learn.

某些学科,例如数学和物理,是很难学的

⑥由 of 引导

The city of Beijing has been greatly changed since 2000. 自从 2000 年以来,北京市发生了很大的变化

⑦由 or 引导

The freezing temperor freezing point, is the temperature at which water freezes under ordinary temperature结冰温度即冰点,是水在常压下结冰时的温度

同位语从句

【拓展延伸】

(1)同位语从句的定义

在复合句中用作同位语的从句称为同位语 从句同位语从句是名词性从句的一种。 它在句中起同位语的作用。它一般放在 fact, news, idea, truth, hope, problem, information, belief, thought, doubt, promise, question 等名词的后面 , 对前面的名词作 进一步的解释 , 说明前面名词的具体含义。 引导同位语从句的词有连词 that, 连接副词 how, when, where, whether

The hope that he may recover is not gone yet.

The problem whether we should continue to do the experiment has been solved.(if 不能代替 whether 来引导同位语从句 )

I have no idea when he will come back.

【点拨】 同位语从句有时被别的词把它和名词隔开 :

The story goes that William Tell killed the king With an arrow.

(2) 同位语从句的表现形式 :

①由that 引导

The fact that you haven't enough time to do the work is simply unbelievable.

The hope that he may come here is not gone yet.

The news that he has been elected president of the United States is true.

The truth that heavy objects and light objects fall at the same speed is known to all.

The problem that she later developed a serious lung disease bothered scientists.

②由whether 引导

The question whether we need more time to do the work has not been discussed.

③由when 引导

I have no idea when they will go.

(3) 有时可用 namely(),that is to say (也就是说),in other words (换句话说),that is (那就是 ),for example 等引出同位语, 说明其前面的名词或代词。有时同位语直接跟 在名词或代词的后面

He told us the good news, namely, the museum is open to all.

There is only one way of improving your English, that is, to practise more.

Altogether Dolly had lived for six years, half the length of the life of the original sheep.

【点拨】 同位语丛句与定语从句的区别

同位语从句与定语从句在使用中常常混淆我们可以从以下几个方面区别它们

①同位语从句说明的名词大都是抽象名词;定语从句所修饰、限定的名词或代词有抽象的也有不抽象的

We express the hope that they will come to visit China again( 同位语从句 )

Those who want to go please sign their names here.( 定语从句 )

②同位语从句所说明的名词与从句没有逻辑关系;定语从句所限定的名词是从句逻辑上的主语、宾语、表语、定语、状语等

The news that they won the match is true-(同位语从句 ,news 和从句没有逻辑关系)

The news that you told us yesterday is true.(定语从句 ,news told 的逻辑宾语)

The order when we should go back hasn't reached us.(同位语从句 ,order 和从句没有 逻辑关系)

The day when New China was founded will never be forgotten(定语从句 ,day founded 的逻辑状语)

③同位语从句主要由连接词 that 引导,有时也可用 when, where, who, whether 等引导;定语从句由关系代词或关系副词引导

Then he raised the question where they were to get the machine needed.

Do you know the place where he was born?

④引异同位语从句的连词不可省略;引导定语从句的关系代词作宾语时常可省略

The news that he has been elected monitor of Our class is true.

The news (that)he to me is exciting.

⑤同位语从句与先行词一般可变成一个完整 it句子,谓语动词用 be 的不同形式

He heard the news that their team had won.

此句可以变为一个表语从句:

The news was that their team had won.

【语法专练】

1. Evidence came up specific speech sounds are recognized by babies as young as 6 months old.

A. what B. which C. that D. whose

2. We should consider the students' request _____ the school library provide more books on popular science

Athat Bwhen Cwhich Dwhere

3. The mere fact _____ most people believe nuclear war would be madness does not mean that it will not occur.

A. that B. what C. which D. why

4. The thought ____ they would go abroad for a visit was exciting.

A. when B. which C. where D. that

5. ---All the building materials have been washed away.

---So I have heard. But there was no sign ______ a heavy rain was on the way last night.

A. when B. If C. which D. that

答案:1~5 CAADD

【高考零距离】

12012福建卷• T3535. We promise attends the party a chance to have a photo taken with the movie star.

A. who B. whom C. whoever D. whomever

【解析】选C。本句考查连词的辨析。首先本句考查的关键短语是promise sb sth“向某人承诺某事“本句指的是向参加聚会的人提供一个和电影明星合影的机会,不定式做chance的定语,然后就是参加聚会的任何人whoever=anyone who,这样句子就很清晰了,所以划分句子成分非常关键,以前考察whoever都是做状语,而本题考查的是作promise的宾语,挺新颖的。

22012安徽卷• T2727.The limits of a person’s intelligence,generally speaking, are fixed at birth, but

he reaches these limits will depend on his environment.

A. where B. whether C. that D. why

【解析】选C首先把插入语generally speaking删掉,选择B.本题考查名词性从句,but whether he reaches these limits 【作为句子主语】will depend on his environment.

3.2011•江苏卷• T22The fact that so many people still smoke in public places _______that we may need nationwide campaign to raise awareness of the risks of smoking.

A. suggest B. suggests C. suggested D. suggesting

【解析】选B。考查主谓一致和时态,句意为:仍然有很多人在公共场所吸烟,这样的事实表明我们或许需要一场全国性的运动来提高人们对吸烟的危害的认识。结合句意分析句子结构可知,the factthat引导的是同位语从句,空白后的that从句则是谓语动词suggest的宾语从句;主语是the fact,故排除AD项;结合从句的时态可知主句要用现在时态,故选B项。

4.2010·湖北卷·T26I wasn’t blaming anyone; I said errors like this could be avoided.

A. merely B. mostly C. rarely D. nearly

【解析】选A。考查副词词义辨析。merely仅仅,只不过;mostly大部分地,通常地;rarely很少地,几乎不;nearly几乎= almost;。句意“我并没有责怪任何人,我只是说类似这种错误是可以避免的”。

5.2010·江苏卷·T24Thousands of foreigners were______ to the Shanghai World Expo the day it opened.

A. attended B. attained C. attracted D. attached

【解析】C。表示成千上万的外宾被吸引来参加上海的世博会。

6.2010·上海卷·T36 One reason for her preference for city life is she can have easy access to places like shops and restaurants.

A. that B. how C. what D. why

【解析】选A,此处考查的是同位语从句,考查that引导同位语从句的用法。此处that不可以省略。

7.2009·湖北卷·T29You’d sound a lot more polite if you make a request ______ a question.

A. in search of B. in the form of

C. in need of D. in the direction of

解析B. 考查介词短语。此处意思是以问题方式向对方提出请求显得更有礼貌in the form of 符合句意。in search of“寻找in need of“需要in the direction of“……方向

8.(2007·天津卷)________ fire, all exits must be kept clear.

A. In place of B. Instead of C. In case of D. In spite of

【解析】选C。考查介词短语辨析,句意:以防发生火灾,所有的出口必须清理干净。C项符合。A代替;B而不是;D尽管

【考点提升训练】

一、听力(略)

二、单项填空

212011·北京模拟)He was so stubborn that no one could _______ him to go there.

A. forbid B. stop

C. keep D. prevent

22.2011·银川模拟)—How long do you think the terrible snow will ______ ?

—Sorry, I didn’t listen to the weather forecast.

A. get through B. cast down

C. fade out D. keep up

23. 2012届广西桂林市、崇左市、百色市、防城港市高考联合调研33.—You are so excellent.

I dont understand what you mean saying that.

Aby Bfor Cof Din

24. The hotel was nice; the weather was hot; the beaches were beautiful. _______ Id say it was a great vacation.

A. Anyhow B. Altogether C. Somehow D. Nevertheless

25.2012届贵州师大附中高三年级检测】9. It ______ unusual courage and determination to make the break with his family.

A. took B. needed C. spent D. shared

26. The match was cancelled because most of the members __________ a match without a standard court.

A. were objected to having B. objected to have

C. were objected to have D. objected to having

27. 2011·温州模拟)Some classmates are against my plan while the majority are ______ it.

A. in view of B. in favour of

C. in honor of D. in memory of

28. --- Have your working conditions improved?

--- No, _____ than before, I’m afraid.

A. no better B. a little better C. not worse D. no worse

29. _______ restoration of ancient architecture, the Chinese government has invested a large sum of money on it.

A. In case of B. In favor of

C. In terms of D. In honor of

30. The genes of the cloned animals are so arranged that it can't________ such a disease, so it soon died.

A. overlook B. resist C. exist D. withdraw

31. Fitness is important in sports, but of at least ________ importance are skills.

A. fair B. reasonable C. proper D. equal

32. I’m after a watch as ______ gift to my daughter, ______ one looking nice but not expensive.

Aa; the Ba; 不填 Cthe; the D.不填; a

33. The chairman thought _______ necessary to invite Professor Smith to speak at the meeting.

A. that          B. it             C. this           D. him

34. Word came _____ China’s first spacewalk was a great success.

A. that B. what C. which D. when

35. he came to love sports, he became much stronger than before.

A. Shortly after B. After shortly

C. Before long D. Shortly

三、完形填空

I watched as my little brother was caught in the act. He sat in the corner of the living room, a 36 in one hand and my fathers hymnbook(赞美诗集) in the other. Hearing my father coming, my brother 37 it slightly. He sensed that he had done something 38 . I saw he had 39 my fathers new book and scribbled(乱写)on the first page in pen. Now, 40 at my father fearfully, we 41 waited for his punishment. My father 42 his book, looked at it, and then sat down without saying a word He was a clergyman and the holder of several degrees. For him, books were knowledge, and yet, he 43 his children. Instead of 44 my brother, he sat down, 45 the pen from my brothers hand and wrote in the book himself, Johns work. 1959. aged three.

The years and the books came and went. Our family 46 what all families go through. We 47 knew our parents loved us and that one 48 was the book by the piano. From time to time we 49 open it, look at the scribbles, read my father’s expression of love and feel 50 .

Now I know that through this 51 act my father taught us how every 52 in life has a positive side-if we are 53 to look at it from another angle. But he also taught us about what really matters in life: 54 ,not objects; tolerance, not judgment; love, no anger. Love is at the very 55 of a family.

When thinking about these, I smile and whisper, Thank you, Dad.

36Atoy Bknife Cpen Dcup

37Atore Bcovered Cwiped Dthrew

38Awrong Bimportant Chelpful Dgreat

39Aborrowed Bstolen Copened Dread

40Aglancing Bstaring Ccoming Dlaughing

41Aall Beither Cboth Deach

42Apicked up Bmade up Cput up Dwrapped up

43Aadmired Bneeded Chated Dloved

44Apunished Btrusting Chelping Dpraising

45Amoved Btook Cbrought Drobbed

46Aspent Bexperimented Csuffered Dexperienced

47Aseldom Balways Cnever Dsometimes

48Aproof Bresult Ceffect Dimpression

49Amight Bshould Cwould Dcould

50Aexcited Bencouraged Csurprised Dfrightened

51Arapid Bsudden Chard Dsimple

52Aevent Bproblem Ctrouble Daccident

53Aforbidden Bchosen Cprepared Dforced

54Amoney Bpeople Cbelief Dspirit

55Acorner Bmouth Cbottom Dheart

四、阅读理解

A

The State of Colorado has four of the best parks out of the 58 national parks in the United States. The parks have some of the best scenery of all the national parks

Black Canyon 峡谷 of Gunnison National Park

This park offers the most breathtaking views from up in the mountains into the canyons below While exploring the canyons, you will find that the walls drop nearly straightdown into the narrow valleys of the snake-like rivers belowVisitors are offered more than 100 camping sites, and a lot of bird species and many animals are native to the area

Rocky Mountain National Park

It is the only national park in the north central region in the state of ColoradoElevations in this park are anywhere from 8,000 feet to 14,259 feet at the top of Longs Peak..While traveling throughout this park you will notice two very different climates because of the difference t-he upper peaks of the Rocky Mountains make. You can enjoy 359 miles of hiking trails, a lot of places for camping, horse-back riding and beautiful scenery.

Mesa Verde National Park

This is probably the most interesting national park, offering a fascinating trip back in time to 600 AD up to 1300 ADThis park was declared a protected national park in-1906 because of the cliff dwellings 住所 that were found throughout the area, which were once-home to American IndiansMany of these dwellings can be walked through, while you imagine what each room may have been used for so many years ago

Great Sand Dunes 沙丘 National Park

The Great Sand dunes National Park lies in south central Colorado, about 127 miles from PuebloThis park has the tallest sand dunes in all of North America and has trails for hikingThe natural sandy beaches around the small rivers and lakes are good for swimmers

56What's the most breathtaking thing in the Black Canyon of Gunnison National Park?

AThe animals BThe walls CThe rivers DThe camping sites,

57In the Rocky Mountain National Park, tourists may NOT be able to _ _

Ago sightseeing Bboat Cride a horse Dcamp

58If you are interested in history, you are advised to visit __

Athe Rocky Mountain National Park

Bthe Black Canyon of Gunnison National Park

Cthe Great Sand Dunes National Park

Dthe Mesa Verde National Park

59What's the author's purpose in writing this passage?

APersuading people to visit Colorado while in America

BShowing people which park is the best of the four in Colorado

CIntroducing the best four parks in Colorado to people

DTelling people some traveling information in Colorado

B

Captain RFScott, the famous Antarctic explorer, made two expeditions to the Antarctic.

His first expedition, in the ship Discovery, took place between 1901 and 1904 and was half funded by the governmentOn this trip, Scott and his party anchored Discovery in McMurdo SoundRoss Island where they built a simple roomDuring the winter they conducted astronomical observationsIn June the sun cannot be seen from within the Antarctic Circle and it is dark 24 hours dayIn the spring, the weather improved and Scott, Dr Wilson and Ernest Shackleton set offtowards, the South PoleThey had some sledge 雪橇 dogs but didn't really know how to "use them, so they largely pulled the sledges themselves, Scott traveled slightly further, much further than anyone before but it was a terrible journey

In 1910, he sailed on another scientific voyage to the Antarctic, this time in the Terra Nova, originally a whaler 捕鲸舰).This second expedition had less government support and many schools made collections for the expeditionWhile Scott was sailing south on his second expedition, he heard the news that the Norwegian, Roald Amundsen 1872-1928, was going to Antarctica and was likely to try to reach the South Pole firstAlthough Amundsen was an experienced Arctic explorer, Scott was determined to get there firstHe headed to the south early in 191l, and set out towards the Pole on November I from Ross Island during the second summer thereHowever, on January 18, 1912 when they arrived, they found Amundsen and his four Norwegian companions had got there just over a month before themScott's men had been beatenOn the way back, they encountered disaster and all of them diedNear the end of the Antarctic winter of 1912, their, bodies were found, Their journals and papers were recovered

Following the news of his death, Scott became a British hero, a status maintained for more than 50 yearsIn the closing decades of the twentieth century, however, in a more skeptical age, the legend was reassessedFrom a previously unassailable position, Scott became a figure of controversy, with questions raised about his competence and character

60What's the passage mainly about?

AScott's competitors on the scientific voyage to the Antarctic

BHumans' expeditions to the Antarctic in the 1900s

CScott's two expeditions to the Antarctic,

D..Scott's achievements in discovering the world

61On the first expedition to the Antarctic, Scott and his party __

Adid scientific research Bgot support from many schools

Creached the South Pole Dlearned how to use sledge dogs

62What can we infer from the passage?

AScott and his party encountered danger on the two expeditions to the Antarctic

BThe government didn't support Scott's second expedition to the Antarctic

CAmundsen tried several times to reach the South Pole but he failed

DScott didn't make special preparations for his second expedition to the Antarctic

63The underlined word "unassailable" in the last paragraph, means"_ _"

Aunclear Bunconfirmed

Cunfortunate Dundoubted

C

Failure, they say, is the best teacherWe learn and gain more confidence through trial and errorAt one time or another we will encounter failureYou don’t have to accept your failure if what you really want to achieve is success

For every achievement, there have been one or more failuresBut those who we call successful are those who refuse to accept failure and believe success is the other side of failureThe incandescent light (白炽灯) was invented after 1000 failureAssuming he had stopped after he tried 100 times without the desired result, what would have been the result of such effort?

Any time you see products and new inventions, think in terms of failures that are not acceptedMoreover, everything in a microform today is a result of failure that is not acceptedAny time your effort is not bring a desired result, you don’t have to call it a failureCall it a chanllengeWhat is the difference between the two? One is negative, and the other is positive; one motivates, and the other demotivates

What you need is positive thinking and motivation to attain successFailure is an end thing; challenging is an open thingFailure means there is no way out, no altermative, but challenge is a question mark asking another way out of the situation, an alternative solution to the problem, the job at handKeep dreaming and moving; that is the solution to successA wise man once said if you cannot fly, runIf you cannot run, walkIf you cannot walk, crawl; just keep on moving

If you fall down, you have to get up and start movingIf not, other people will step on you to the way to their successWhat you call failure and abandon is what someone will continue with just a little additional effort to reach success

64Failure is the best teacher because___________

Awhat people have learned from failure is the best

Bpeople will know what failure is like after failure

Cpeople can learn a lot by trying various solutions

Dnumerous failure are sure to lead to success

65The author gave the example of the incandescent light in Paragraph 2 in order to______

Ashow that success is the other side of failure

Btell people their efforts will be paid off finally

Cadvise people not to waste their time

Dprove that every achievement is based on invention

66What is the advantage if you regard a failure as a challenge?

Ayou will feel proud even if you fail many times

BYou won’t fear failure and will be ready to accept it

CFailure means pain while challenge sounds good

DYou will continue trying your best to succeed

67In which part could this passage be found if it is taken from a magazine?

A Economy. B Career. CCulture. DWealth.

D

I think that genetically modified foods should be bannedHere's why

We have no idea of the real impact they have on our environmentWhile there's currently no hard proof that environmental damage is being done by genetically modified foods, there are a few worrying and suspect events that may actually be tied to these productsMost important is the sudden loss of huge numbers of bee hivesBees are necessary to the pollination process for soybeans and many other food cropsIt's entirely possible that "the law of unintended consequences" has caused the loss of these extremely important insects

There's also no real way to prevent cross contamination 交叉污染 between modified crops and natural cropsWhen neighboring fields are planted with different varieties of computable可共存的 plants, there is a virtual guarantee of some cross pollination between the fields

We have no idea of the real impact they have on human beingsThere is already documented evidence that genetically modified foods may be the cause of higher allergy 过敏 rates in children, It's impossible to guess v/hat other effects they may eventually cause

I suspect that most people have forgotten the serious health scare and complete failure that occurred in 1989 that caused death or health problems for hundreds of peopleThe product causing the problem was L-tryptophan, an amino acid; Commercially produced L-tryptophan is developed through a bacterial fermentation processOne maker of the supplement developed a genetically modified strain of bacteria which was capable of producing higher quantities of L-tryptophan

Unfortunately, the process "broke" somewhere along the line with the genetically altered bacteria creating an altered form of the chemical which had devastating effects on people who consumed it

Since there is no way to predict these kinds or changes, it's both foolish and dangerous to introduce genetically modified products into the food chain.

Finally, there's no need for genetically modified foodsMost companies that produce these products will send out statistics about higher output per acre or plants that are more tolerant to negative conditionsBut the truth is that the claims, while at least partially true, are mostly rhetoric

These companies are really just looking for a way to increase their bottom line profitsThey may not actually intend to, damage the ecosystem or create new health problems for peopleBut in my opinion it's not nice to fool Mother NatureShe may offer up a variety of severe surprises in response

68What's the structure of the passage?

69The sudden loss of bee hives may be due to ___ .

Aenvironmental pollution from human beings

Bgenetically modified products

Ccross-contamination between modified crops

Dcross pollination between the fields

70Which of the following words best describes genetically modified foods?

ARisky BDeadly. CHarmful DHealthy

71Most companies advocate the genetically modified products in order to _ _

Aincrease their output Bsolve health problems

Cearn more money Dprotect the ecosystem

E

Internet access and power outlets available in most cafes in thedeveloped world might reduce your productivity

A typical tale from store managers is of customers who buy a single cup of coffee or tea and occupy a four-seat table for eight or more hoursA store full of these people turns the shop into a silence broken only by the tapping of keyboard keysIn others, however, customers use the network briefly, and the turnover is high

Cafe owners have talked about their discomfort for yearsSome cafes founders started turning off Wi-Fi 无线网络 on the weekendsThe experiment led to success, they saidPeople who otherwise avoided the cafe came in, and the place became crowded on Saturdays and SundaysIn the years since, hundreds of articles have appeared about similar cases in which a coffee shop turns off the signal, and sometimes blocks electrical outlets

Nick Bilton, the New York Times" Bits blog editor, was banned from reading an electronic book a few days agoThe Actual Cafe in Oakland opened last year with lapton-free weekendsThe owner, Sal Bednarz, wrote in an email, "I think it's fascinating that we've allowed technology to enter so much of our lives that it can feel like an affront 冒犯 when someone asks us to step away

from it for a short while"

Dan Drozdenko, the owner of the Downbeat Cafe in Los Angeles, says, “People come here because we don't offer itThey know they can get their work done and concentrated"

For tasks that don't require constant monitoring of live datesuch as stock management or minding server operationsproductivity seems to soar when the constant bright shiny ball of the Internet is nowhere to be seen

People often leave the house or office to free themselves of conditions that reduce productivity, only to walk into a venue that lets them surf, and otherwise avoid focusCould the offer of single-tasking and quiet thinking be a selling point when drinking coffee or tea? A moment's relief from the Blackbgerry buzz, the iphone alert, the Android annoyance? Only if one remembers to turn off one's 3G connection, too

72What's the disadvantage for a cafe owner if the customers use the Internet long?

AIt makes the turnover slow and affects the business

BIt makes the cafe silent and is bad for its atmosphere

CThe owner is disturbed by the tapping of keyboard keys

DIt costs a lot to offer Internet access to customers

73What happened after Wi-Fi was turned off in the cafe on the weekends?

AIt added much inconvenience to people

BCustomers stayed in the cafe longer than before

CThe environment in the cafe was improved

DThere were more customers in the cafe

74What can be inferred from the words of Dan Drozdenko?

AIf people don't get their work done, they shouldn't go to a coffee shop

BIf people go to a coffee shop, they would concentrate more on their work

CIf people do their work while surfing the Internet in a coffee shop, they can't concentrate

DIf people can't surf the Internet in a coffee shop, they would be unwilling to come,

75The underlined word "soar" in Paragraph 6 is the closest in meaning to "__"

Aexist Bmaintain

Crise Dchange

五、书面表达

(2012·北京市朝阳区届高三第一次模拟考试)

In your English class, you are asked to describe the following picture and explain to your classmates how you understand it.

提示词 公鸡 cock

参考答案

21【解析】选A。句意:他是如此固执,以致没人能禁止他去那里。四个选项中只有forbid一词能用不定式作宾补。故选A

22【解析】选D。句意:——你认为这场大雪将会持续多久?——抱歉,我没有听天气预报。get through通过;cast down沮丧,不愉快;fade out渐隐,渐弱;keep up持续不变。

23【解析】A考查介词的用法。解题关键:句型what do you mean by 。。。句意:我不明白你那么说的意思。

24 B 25【解析】选A。考查动词的用法。此处it为形式主语,后面的to make the break with his family是真正的主语。

26 D

27【解析】选B。句意:有些同学反对我的计划而大部分都支持。in view of鉴于,考虑到;in favour of支持;in honor of……表示敬意;in memory of纪念。

28-30 ACB 31~35 DBBAA

3640 CBACB 4145 CADAB 46—50 DBACB 5155 DACBD

56-60BBDCC 61-65 AADCA 66-70 DBABA 71-75 CADCC

五、One possible version:

As can be seen from the picture, a teacher-like cock stands on the bank, proudly and vividly explaining how to swim. His students, three ducks, float in the water, listening attentively.

The picture wants to remind us of the importance of self-awareness. Both the cock and the ducks fail to know themselves clearly, so they make vain effort. The cock is definitely unable to swim but works as a swimming coach confidently. On the other hand, the ducks, the born swimmers, are eager to learn how to swim, even from a cock. Lack of a sound self-knowledge, they are bound to fail. As to us, we should have a right judgment to our ability and choose to do what are really suitable for us.

2020年高考英语一轮精品复习学案:Unit2 Cloning(新人教版选修8)

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