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2019届一轮复习人教版必修二Unit 3Computers单元学案
单元基础词汇语法过关复习
一、单句语法填空
1.(2017年新课标Ⅰ卷·七选五型阅读理解)They had nothing in common ________ me.
2.(2017年江苏卷·任务型阅读)In 2030,a sixth of the country's potential work force could be ________ (total)uneducated.
3.It ________ (simple) the most complex idea I have.
4.The company has given its computers ________ to a local school.
5.It ________ (use) in offices and homes since 1970s.
6.Anyhow, my goal is ________ (provide) humans with life of high quality.
7.________ (person), I think the best present is not necessarily the most expensive one.
8.We shouldn't judge a person by his ________ (appear), but people make that mistake from time to time.
9.Over time the computer ________ (change) a lot.
10.________ the help of my parents I learned to ride a bike.
二、单句改错
1.(2017年新课标Ⅰ卷·短文改错)I was so much nervous that I could hardly tell which direction was left.
________________________________________________________________________
2.It won't be long before we will know the result of the experiment.
________________________________________________________________________
3.I followed the teacher's advice and paid more attention at my spoken English.
________________________________________________________________________
4.In the way, I'm glad you made that mistake, for it will serve as a warning to you.
________________________________________________________________________
5.Don't blame him for breaking that vase; at all he is still a child.
________________________________________________________________________
6.Can you give me some advice on what to deal with this difficulty?
________________________________________________________________________
7.Maybe we can come up with a solve to the problem.
________________________________________________________________________
8.This is so an interesting book that all the students in our class want to read it.
________________________________________________________________________
9.The man was standing in the front of the ship, watching at for icebergs.
________________________________________________________________________
10.With the wealth of the country increases, more waste will be produced.
________________________________________________________________________
三、完形填空
(2016年四川卷)
Lainey finished third grade.She had good grades and could read__1__ grade level, but she did not like to read.On a family car trip, her Aunt Dede pulled out a copy of Harry Potter, as a surprise for her __2__.But Lainey took one look at it, __3__ her eyes, and said, “Borrrring!”
Aunt Dede, a teacher, had read the book to her students, and they loved it.__4__ the youngest children in the class were __5__ by the story.They __6__ with great interest and then __7__ joined in grand conversations about Harry's adventures.
“How can you say it's __8__? Have you read it?” asked Aunt Dede.
“No, it's too long and it doesn't have any __9__,” complained Lainey.
“Oh, that's where you are __10__; there are lots of pictures.Every page is full of pictures; you just have to read the words to __11__ them.It's like magic.”
“Nice try, Aunt Dede,” Lainey replied __12__ from the back seat.
Another __13__ was in order.“Well, if you don't want to read it, give it __14__.Maybe your mom would __15__ hearing the story.” The book sailed through the air to Aunt Dede and she began to read it aloud.By the
end of the first chapter, __16__ were coming from the back seat:“Please read a little __17__.”
Lainey is an example of an __18__ reader.As shown here, Lainey can become __19__ about reading when __20__ with literature on topics that interest her, and when the people around her model involvement in the reading process.
1.A.within B.on
C.to D.above
2.A.daughter B.niece
C.student D.friend
3.A.opened B.dried
C.rolled D.shaded
4.A.Even B.Still
C.Just D.Yet
5.A.surprised B.annoyed
C.puzzled D.attracted
6.A.read B.told
C.listened D.wrote
7.A.suspectedly B.anxiously
C.calmly D.enthusiastically
8.A.amazing B.boring
C.ridiculous D.humourous
9.A.pictures B.stories
C.adventures D.conversations
10.A.crazy B.foolish
C.wrong D.different
11.A.see B.match
C.show D.recognize
12.A.sourly B.patiently
C.eagerly D.shyly
13.A.idea B.try
C.belief D.behavior
14.A.away B.out
C.in D.back
15.A.enjoy B.admit
C.mind D.finish
16.A.decisions B.requests
C.comments D.promises
17.A.more clearly B.longer
C.louder D.more carefully
18.A.unpleasant B.innocent
C.unwilling D.independent
19.A.astonished B.worried
C.confused D.excited
20.A.presented B.concerned
C.disturbed D.replaced
四、语法填空
Many teachers believe that handson experience is the 1.________ (good) way to learn.A group of students in the United States are putting that belief to the test.They 2.________ (success) designed and built a robot for discovering unexplored mines 3.________ the bottom of the sea.Students made the robot 4.________ (answer) a challenge from the U.S.Department of Defense.
The students recently tested the underwater vehicle 5.________ (call) Perseus Ⅱ in a 95meterlong tank of water at the Stevens Institute of Technology.
The robot costs about $15,000 to build.The students use a video game control to direct 6.________ (it) movements in the tank.What's more, devices known as Japters 7.________ (able) the robot to go up, down and toward its target in the water.Video cameras on the robot send images back to a computer through a 13meterlong cable.Perseus Ⅱ also has 8.________ set of lasers (激光), which are used to measure the size of an object.
The robot is the creation of five undergraduate students.For over six months, they worked up 9.________ 20 hours a week to design and build Perseus Ⅱ.
DeLorme supervised the project from 10.________ (begin) to end.He says the specialized requirements of robots were demanding.
五、七选五型阅读理解
(2016届广州普通高中毕业班综合测试一)
Vacations are important.We need to take time out from work to relax, and just be ourselves.__1__ We should all be allowed to leave our jobs behind us—at least for a few weeks each year—and just have fun.This might be something as simple as reading a good book in front of a warm fireplace and travelling to the most interesting places on our planet.Whatever we fancy doing is worth taking time out for.
Workplace stress is on the rise.__2__ These include disease, depression and even death.We all seem to be running from one place to
the next, never finding out where we want to go in the first place.I intend to break that trend in the coming days.
__3__ I will sleep late, write, watch movies, drink the occasional glass of wine, and eat to my heart's content ignoring calorie counting.My plan is to just enjoy the fleeting moments of being alive.
__4__ Spend your next vacation the way you want.Do what will restore your mental health.You're very valuable to the people who are close to you, and to those who depend on it.Like it or not, we are all interdependent in this great life of ours.
You are valuable.Just remember that the next time you look at the mirror and take a deep breath.Remind yourself that there will never be anyone like you ever on this earth again.__5__ All you have to do is just ask yourself what you want to do.
A.With it comes many health problems.
B.When you finally get home you'll be greatly refreshed.
C.I challenge each one of you to do the same.
D.Draw up a detailed plan so you can see more.
E.Life is not all about work, or at least it shouldn't be.
F.And only you know how to vacation your way.
G.For my next holiday, I will do all the things that I love doing.
能力检测答案
一、1.with 2.totally 3.simplifies 4.away
5.has been used 6.to provide 7.Personally
8.appearance 9.has been changed 10.With
二、1.去掉much 2.去掉will 3.at→to
4.the→a 5.at→after 6.what→how或deal→do
7.solve→solution 8.so→such 9.at→out
10.With→As或increases→increasing
三、本文讲述了Lainey完成三年级学业,可以阅读高于年级平均水平的读物,Aunt Dede给她一本《哈利·波特》让她读,然而她并不感兴趣。如果提供给Lainey感兴趣的读物,情况就不会这样了。
1.D 句意:她取得了好成绩,可以阅读高于年级平均水平的读物。above表示“能力超出……之外”。故选D。
2.B 句意:Aunt Dede拿出一本《哈利·波特》给她一个惊喜。根据Aunt 一词可判断她们两人之间的关系。niece外甥女,侄女。故选B。
3.C 句意:Lainey看了一眼,骨碌碌地转着眼睛,说,“无聊!”roll转动,旋转。故选C。
4.A 句意:Aunt
Dede是一位老师,她的学生都喜欢这本书。即使是班上最小的孩子也被这个故事吸引了。even用于加强语气。故选A。
5.D 根据下句中的“with great interest”可知孩子们被这本书所吸引。故选D。
6.C 根据本段首句中的“had read the book to her students”可知,老师读给孩子听。故选C。
7.D 根据句中的“with great interest”可知孩子们热情地参与讨论。enthusiastically满腔热情地;suspectedly怀疑地;anxiously 不安地;calmly冷静地。故选D。
8.B 此空照应第3空后女孩说的“Borrrring”。 句意:你怎么能说它无聊呢?故选B。
9.A 根据第10空后的pictures可知Lainey抱怨这本书没有任何图片。故选A。
10.C Lainey说没图片,而Aunt Dede说每一页都充满了图片,显然是Lainey说错了。故选C。
11.A 句意:你只需要读单词。这就像魔法一样,读读上面的单词,就可以看到图片。故选A。
12.A 从第13空后的“Well, if you don't want to read it”可知Lainey还是不想看这本书。nice try想得美,做的不错;sourly酸溜溜地。故选A。
13.B Aunt Dede再次尝试让Lainey感兴趣。故选B。
14.D 句意:如果你不想读它,还给我。give back归还;give away 分发,泄露;give out 发出,耗尽; give in 屈服。故选D。
15.A 句意:也许你妈妈会喜欢听故事。故选A。
16.B 句意:Aunt Dede开始大声朗读故事。到第一章结束时后面的人请求大声点读。后座的人让Aunt Dede大点声读,request请求,符合语境。故选B。
17.C 参见上题解析。louder符合语境。故选C。
18.C 从上文可知Lainey不愿意读。故选C。
19.D 句意:如果提供给Lainey感兴趣的读物,周围的人参与阅读,她会很愿意读的。根据第20空后的“interest”可判断出选excited。故选D。
20.A 参见上题解析。present提供,赠送;concern关系到;disturb打扰;replace取代。故选A。
四、本文通过事实证明:亲身的实践经验是学习的最好方法。
1.best 此处表示“亲身的实践经验是学习的最好方法”,根据the可知用最高级。
2.successfully 副词修饰动词designed和built做状语,故用successfully。
3.at at the bottom of...表示“在……的底部”。
4.to answer 在这里to answer是动词不定式做目的状语,表示“制造这个机器人是为了回应美国国防部的一项挑战”。
5.called 此处应用过去分词做后置定语,表示“被叫作”,故用called。
6.its 由后面的“movements”可知,应用形容词性物主代词做定语。
7.enable 分析句子结构可知,主语是devices,谓语是设空处,故应用动词enable,表示“使发生”。且此处是一般性的描述,故应用一般现在时。
8.a a set of表示“一系列”,故用a。
9.to up to表示“达到”,故用to。
10.beginning from beginning to end表示“从头到尾”。
五、假期很重要,我们要从工作中解脱出来,让自己放松。
1.E 根据空格处的上句“我们需要时间从工作中解脱出来,让自己放松,仅仅做自己”与下文的“我们应该允许自己暂时把工作放在脑后”可知选E。E项“生活不全都是工作,至少不应该是这样”起承上启下的作用。
2.A 根据空格处的上句“工作压力日益增加”与下文的“这些问题包括疾病、抑郁甚至死亡”可知选A。A项“随之而来的是很多健康问题”衔接上下文。
3.G 根据空格后的“I will sleep late...ignoring calorie counting.”可知,应选G(在接下来的假期中,我要做所有我喜欢的事情)。
4.C 根据空格后的“按自己想要的方式度过接下来的假期”可知选C(我强烈建议你也做同样的事情)。
5.F 根据空格处的上句“提醒自己你是独一无二的”和下句“你只需问问自己想要做什么”可知,选F(只有自己知道自己想要什么样的度假方式)。
单元专题高考链接训练
第一节(共15小题;每小题2分,满分30分)
A
Get Ready to Read!
DATE
STORE NAME
CITY
Barnes & Noble
Check your local
2/27/18
B&N
2/27/18
The Magic House
Kirkwood
2/27/18
Meijer
Indianapolis
3/2/18
Avid Bookshop
Athens
3/4/18
William J Clinton
Presidential Library
Little Rock
3/4/18
Baylor Bookstore
Waco
“You're never too old to pick up a book and read with a child.” That's the message the National Education Association (NEA) hopes to convey (传递) during this year's Read Across America celebration.The event is held on March 2 to honor the birthday of Theodor Seuss Geisel, better known as Dr. Seuss. But the festivities (庆典活动) aren't limited to one day. From February 27 to March 4, students, teachers and families nationwide will be in the joy of reading.
Read Across America began 21 years ago as a way to get kids excited about reading.“You have this magical thing happen when an adult sits with a kid and turns the pages, and reads in a funny voice, and you laugh together,” Lily Eskelsen Garca, the NEA president, told TFK. “The key point is making it fun, not for the next test, not because it's something they have to memorize or something they have to do.”
Kids can celebrate Read Across America with any book they like. But in honor of Dr. Seuss, they might want to pick up his most recent published work, What Pet Should I Get? It was discovered 20 years after Dr. Seuss's death and published in July of 2015, making fans of the author delighted.Like other Dr. Seuss's books, What Pet Should I Get? includes rhymes (韵文), humor and familiar Seussian illustrations
(插图).In it, a brother and a sister visit a pet shop and have trouble choosing just one animal to bring home.
Anyone can take part in Read Across America.All it takes is getting a book or a few loved ones and sharing the joy of reading.
语篇解读:本文是应用文。文章介绍了Read Across America 这个读书活动,旨在号召父母、老师和孩子一起读书,享受读书的乐趣。
21.According to the text,the event on March 2 is held in________.
A.Barnes & Noble B.The Magic House
C.Baylor Bookstore D.Avid Bookshop
解析:选D 细节理解题。根据文章前面表格中内容可知,3月2日这天读书活动在Avid Bookshop举行,故选D。
22.What's the original purpose of Read Across America?
A.To promote American culture.
B.To get children to study hard.
C.To make children interested in books.
D.To introduce famous writers to the public.
解析:选C 细节理解题。根据文章正文第一段第一句“You're never too old to pick up a book and read with a child”和第二段最后“The key point is making it fun,not for the next test,not because it's something they have to memorize or something they have to do”可知,这个活动的目的是使得孩子们对读书感兴趣。
23.The book What Pet Should I Get? is mainly written for________.
A.teachers B.parents
C.children D.pet shop owners
解析:选C 推理判断题。根据文章第三段“includes rhymes, humor
and familiar Seussian illustrations.In it, a brother and a sister visit a pet shop and have trouble choosing just one animal to bring home”可推测,该书主要是写给孩子看的。
B
(2018·北京西城模拟)Turning the lights out or wearing a blindfold while eating could be a quick way to lose weight, according to scientists. The simple trick works because it stops diners eating for pleasure rather than for calories. It also triggers (引发) a part of the brain that is worried that unseen food may go bad.
An experiment by the University of Konstanz, in Germany, found that people who were blindfolded consumed nine percent fewer calories before they felt full, compared to those who could see.They also vastly overestimated how much they had eaten because they could not see how much was left on the plate. Blindfolded volunteers estimated they had eaten 88 percent more than they actually had.
Scientists believe that not seeing food on the table also allows the body to know when it is full in real time rather than remembering past experiences where it might have taken a full plate to feel full.
In the experiment, 50 people were blindfolded and 40 were allowed to see their food. All were told not to eat within two hours of the experiment. They were then given three 95g bowls of chocolate icecream and invited to eat for 15 minutes. Their bowls were taken away and the remaining icecream weighed, while the participants were quizzed on how much they thought they had eaten.
On average the group who could see ate 116g while the blindfolded groups ate 105g. However, the blindfolded group believed they had eaten 197g while compared with 159g for the nonblind volunteers. They were
also asked how pleasant the icecream tasted and the blindfolded group rated lower than those who could see.
“The experienced pleasure of eating was significantly lower in the blindfolded group.Not seeing the food might have decreased the appetite. Sight plays an important role in the eating experience and in the overall dining experience.”
Previous studies have shown that the visual influence of food plays a large part in the taste. While restaurants that allow diners to eat in the dark state that it triggers other senses, in fact eating in darkness is likely to taste far milder than usual.
语篇解读:本文是一篇说明文。科学家通过研究发现人们在熄灯或者戴着眼罩时用餐可以减肥。
24.With the lights out, diners eat less partly because________.
A.they want to quickly finish their meals
B.they trust their feelings more than ever
C.they focus more on fun than the calories
D.they worry about the quality of the food
解析:选D 细节理解题。根据第一段最后一句可知,当关灯后,饮食者可能会担心食物的质量。故答案选D。
25.We can learn from the passage that the blindfolded group________.
A.spent a much longer time eating the same food
B.believed they ate more than they really did
C.depended on past experiences to feel full
D.thought the food tasted better than usual
解析:选B 细节理解题。根据第二段最后一句以及实验过程可知,戴眼罩的志愿者们相信他们比实际上吃得更多。故答案选B。
26.The last two paragraphs tell us that________.
A.diners are likely to lose their appetite eating in darkness
B.senses rather than sight play an important role in the taste
C.findings of this experiment differ from the previous studies
D.restaurants benefit a lot from allowing diners to eat in the dark
解析:选A 推理判断题。根据倒数第二段第二句并结合最后两段可知,最后两段主要讲的是在黑暗中吃东西,饮食者可能会降低食欲。故答案选A。
27.The main purpose of the passage is to ________.
A.provide statistics related to eating in the dark
B.offer reasons for people to eat in the dark areas
C.inform the readers of the result of an experiment
D.persuade the readers to lose weight in a new way
解析:选C 写作意图题。纵观全文可知,本文主要是通过叙述实验过程来告知读者实验结果。A、B两项是文章具体讲到的内容;D项在文章中没有体现。故答案选C。
C
(2018·河北省内丘中学模拟)The late, great producer Phil Ramone worked with many famous popular singers. However, one of his albums is a little different. It's classical music, made for children.
“He actually started as a child violinist,” said Marc Neikrug, a famous classical composer who worked together with Ramone on the album, “Sunken Cathedrals,” after being introduced by Rock Positano, a doctor with a special interest in music's value to medicine. “The three of us all want to promote classical music to children.”
In the digital age when children develop surrounded by constant
distractions (使人分心的事物), however, Neikrug sees a very particular value in classical music. “I'm concerned about a world in which there is an almost aggressive move to lower people's attention spans (持续时间),” he said. “That's terrifying. How do you even absorb and learn things? How do you expect kids to do well in school?”
“I think it's really important to let kids build some kind of ability to focus,” Neikrug said. “Great music can do that, because you're drawn into what you're listening to. A two or threeminute music may not seem so long to concentrate on, but it's a good attention span for kids,” he said. “We picked the pieces very deliberately to be not too long.”
All of the pieces on the twopart album are unadapted, complete works of classical music. “Phil, Dr. Rock and I were all completely convinced that we need little, short, beautiful pieces for kids. They happen to be really good for adults too,” he pointed out, though the words “Classics for Kids” on the cover might scare some grown people off.
This doesn't mean you should toss all of your popular music albums away or trash all the screen devices (设备) in your home. “I'm not an advocate for disregarding the reality of living in this world,” Neikrug said. “I would say someone who grows up able to focus for an hour and equally able to use the smartphone with one hand, is fine.”
语篇解读:本文是议论文。Neikrug与Ramone合作制作了一张儿童古典音乐专辑,他认为古典音乐能帮助孩子们培养专注力。
28.What did Marc Neikrug and Rock Positano have in common?
A.They had the same career.
B.They had the same interest.
C.They had the same circle of friends.
D.They had the same number of children.
解析:选B 细节理解题。根据第二段中的“Marc Neikrug, a famous classical composer”和“Rock Positano, a doctor with a special interest in music's value to medicine. ‘The three of us all want to promote classical music to children.’”可知,Marc Neikrug和Rock Positano都对音乐感兴趣,致力于让孩子从小就听古典音乐。
29.What was Neikrug worried about?
A.People's decreasing attention spans.
B.People becoming too aggressive.
C.People's low learning ability.
D.People losing faith in school.
解析:选A 细节理解题。根据第三段中的“I'm concerned about a world in which there is an almost aggressive move to lower people's attention spans (持续时间)”可知,当今世界让人们的持续关注时间不断减少,Neikrug对此表示担忧。
30.Why did Ramone and Neikrug select short pieces for the album?
A.To attract distracted adults.
B.Because of their own preference.
C.To include more pieces in the album.
D.Because of kids' mental characteristics.
解析:选D 细节理解题。根据第四段中的“... ‘A twoor threeminute music may not seem so long to concentrate on, but it's a good attention span for kids,’ he said. ‘We picked the pieces very deliberately to be not too long.’”可知,由于孩子的持续关注时间很短,所以Ramone和Neikrug专门选短小的曲子迎合孩子们的心智特征。
31.What does the text want to tell us?
A.Popular music producers turned to classical music.
B.Classical music can coexist with digital devices.
C.It's never too late to listen to classical music.
D.Kids can benefit from classical music.
解析:选D 主旨大意题。根据第四段中的“‘I think it's really important to let kids build some kind of ability to focus,’ Neikrug said. ‘Great music can do that, because you're drawn into what you're listening to ...”可以看出,Neikrug认为古典音乐能帮助孩子们培养专注力,这也是他与Ramone合作制作儿童古典音乐专辑的原因。
D
(2018·湖南长沙长郡中学摸底考试)Every few years comes a fitness trend that has people scratching their heads in amazement. “Crunning” will probably be one of them.The “c” stands for “crawling” (爬行). This new sport needs twolegged humans running on all fours!
The funny idea is the brainchild of Shaun McCarthy.The 34yearold is convinced that it will revolutionize fitness as we know it. According to the sports enthusiast, “The only thing that crunning's changed about fitness is that it's changed everything about fitness.”
McCarthy has no scientific evidence to prove that crunning is more efficient than traditional twolegged running.However, he believes it is a more effective way to exercise because it puts an emphasis on the shoulders and arms, providing a complete body workout.McCarthy also says crunning seems to tire him out more. He therefore concludes that the unconventional exercise is a bigger calorie burner than normal running.
While experts generally agree that crunning may provide a better workout, many are not sure if it is the right exercise for humans. Fitness
coach Kevin Dean says we are not built to be on all fours and our wrists are therefore not as strong as our ankles. He believes crunning, which he calls a fad (时尚), could result in bad wrist and shoulder injuries, not to mention broken noses.
But McCarthy is not worried.Since the release of his crunning video a few weeks ago, many Melbourne residents have been seen scampering around on all fours.As it turns out they are not the only ones. In the Chinese city of Zhengzhou, crawling, a much slower version of crunning, has been a favorite activity for many years. According to some enthusiasts, the light exercise that is believed to date back two thousand years to the Han Dynasty is good for curing back and spine ailments.
Ready to give crunning try?Then McCarthy recommends investing in some good shoes, hardy gloves and most important of all, a face mask!
语篇解读:本文介绍了一种新的更有效的健身方式——爬行。
32.What can we learn about crawling according to Kevin Dean?
A.Our ankles are stronger than our wrists.
B.Crawling is an efficient way to work out.
C.The city of Zhengzhou is the origin of crawling.
D.Crawling can burn more calories than normal running.
解析:选A 细节理解题。根据第四段第二句“Fitness coach Kevin Dean says we are not built to be on all fours and our wrists are therefore not as strong as our ankles.”可知,他认为我们的脚踝的力量比我们的手腕更强大。故选A。
33.What does the author think of crunning?
A.Dangerous. B.Interesting.
C.Beneficial. D.Unbelievable.
解析:选B 推理判断题。根据第二段首句“The funny idea is the
brainchild of Shaun McCarthy.”可推知,作者认为这种健身方式很有趣。故选B。
34.Why does McCarthy suggest people wearing a face mask when crunning?
A.To amuse other people.
B.To avoid being recognized.
C.To protect the nose from being injured.
D.To prevent sweat dropping on the ground.
解析:选C 推理判断题。根据第四段末句“He believes crunning, which he calls a fad (时尚), could result in bad wrist and shoulder injuries, not to mention broken noses.”可知,爬行容易伤到鼻子。故选C。
35.What is the text mainly about?
A.A new way of crawling.
B.A new trend of exercising.
C.A scientific discovery.
D.A traditional way to keep fit.
解析:选B 主旨大意题。根据文章描述可知,本文介绍了一种新的更有效的健身方式——爬行。故选B。
第二节(共5小题;每小题2分,满分10分)
Livestock (牲畜) cloning is the practice of cloning sheep, cattle and other livestock species as a way to improve efficiency.The basic idea behind livestock cloning is to clone animals that have certain qualities, such as cows that produce more milk or meat.__36__ However, this practice is very controversial, and livestock farmers have been hesitant to adopt it fully because of public opposition and certain inefficiencies.
In technical terms, livestock are cloned by taking cells from one animal and using them to fertilize eggs (使卵子受精). Scientists take the fertilized eggs and put them in female animals.__37__ Many animals are born with abnormal shapes.Scientists are looking for ways to improve the process and make it less expensive to adopt on a wider scale.
__38__For example, if farmers were able to take only their very best animals and recreate them many times, they could potentially be more productive.
There are also some potential problems with cloned livestock.__39__ For example, when a disease hits, there are usually individuals who cannot be harmed by the disease or are more resistant, and they will generally survive. If all the animals were genetically (在基因方面) identical or similar, this sort of disease could totally destroy an entire generation of livestock, leaving the world with a massive food shortage.
In addition to concerns about genetic diversity,there are other concerns about cloning.__40__There are also some people who worry that livestock cloning research may be a gateway to introducing human cloning, which is widely disapproved of.
A.Are the surviving clones really clones?
B.Therefore, the new species is expected to be better.
C.The biggest one arises from a reduction in genetic diversity.
D.Cloned livestock have the potential to provide some major benefits.
E.Cloning animals shows us what might happen if we try to clone humans.
F.These concerns sometimes come from worries over unforeseen
consequences.
G.This process doesn't always work perfectly, and it can be relatively expensive.
语篇解读:本文是说明文。文章介绍了动物克隆技术。
36.解析:选B 根据上一句内容可知,如果能克隆出生产更多奶和肉的牛,那么“这个新品种应该是更好”。
37.解析:选G 根据本空后的“Many animals are born with abnormal shapes ...make it less expensive”可知,目前克隆的“过程不总是完美,而且价格相对比较昂贵”。
38.解析:选D 根据本空后的内容不难看出,这里是介绍克隆牲畜的“好处。”
39.解析:选C 根据本空后内容可知,克隆技术会减少“基因多样性”,所以当拥有同样基因的动物遭受某种致命疾病时,所有的这些动物都会死亡。下段首句中的“genetic diversity”也提示了本题答案。
40.解析:选F 本空前的concerns提示了本题答案。
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