高中英语 Unit 2 Cloning Reading quiz II练习 新人教版选修8

Unit 2 Cloning Section Ⅱ Warming Up & Reading-Language Points Ⅰ.单句语法填空1．We object to ________(punish)a whole group for one person's fault.2．He________(forbid)them from mentioning the subject again.3．Dr Johnson________(undertake)the task of writing a comprehensive English dictionary last year.4．From the appearance，we can not tell the ________(differ)between the twins.5．Should teachers be accountable for their students' exam results？Are you ________favour of it?6．Please don't talk so loudly ________others are working.7．Once we've got the debt paid________，I'll buy a new car.8．I could not find the________(exactly)word to express my feeling.9．It is unfair that the upper class should continue ________(accumulate)health.10．The proud will ________down.【答案】 1.punishing 2.forbad 3.undertook4．difference 5.in 6.while 7.off 8.exact9．accumulating/to accumulate 10.be castⅡ.单句改错1．The students voiced strong objections of the new project.【导学号：62320028】____________________________________________________________2．Sitting in front of the house was two girls.____________________________________________________________3．You have to pay off your carelessness.____________________________________________________________4．The girl differ with her mother in character.____________________________________________________________5．He was much casted down by his failure to find work.____________________________________________________________【答案】 1.of改为to 2.was改为were 3.off改为for 4.with改为from 5.casted改为castⅢ.阅读理解Millions of people die of hunger in Southern Africa every year, but when Zambia was offered thousands of tons of free maize by the US, the government politely saidno.“We don't know whether the food is safe，” said Zambia's Commerce, Trade and Industry Minister Dipak Patel.His worries are shared by countries around the world that are in_two_minds about America's genetically modified(GM, 转基因的) crops.Just last week, EU member nations were discussing whether or not to import GM sweet corn from the US.Ever since people started farming, they have tried to crossbreed plants to make them stronger or better tasting.At one time, only related plants could be crossed with each other.But when GM techniques were developed in the 1970s, scientists were able to put a single gene from a living creature into an unrelated creature.This means they can make crops more productive and resistant to disease by adding genes from other species.They can also create food with special characteristics, such as “golden rice”， which is enriched with vitamin A．But many people believe GM foods are a health risk.“If left to me, I would certainly not eat GM foods，” said Scottish scientist Arpad Pusztai.“We are putting new things into food which haven't been eaten before.The effects on the im mune system are not easy to predict.”At the moment, the official argument is that GM foods “are not likely to present risks for human health”．But there are still many questions to be answered as the foods are produced in different ways.Some experts believe the genetic material added to plants can transfer to humans and give damage to our bodies.Further harm could be caused by the genes from GM plants crossbreeding with naturally produced crops.【语篇解读】每年有数百万非洲人死于饥饿，但是赞比亚拒绝了美国无偿赞助的玉米，这是为什么呢？原来那是美国生产的转基因食品，世界上有很多人对这种食品持怀疑态度。

选修八 Unit 2《Cloning》单元测试2笔试部分：I. 单项选择1. — Believe me, all your efforts will ________ some day.— Thanks for your encouragement.A. pay backB. pay downC. pay offD. pay up2. Her abandoned teaching ________ a career as a musician.A. instead ofB. in favor ofC. in view ofD. in the event of3. Thanks, but you needn't have ______. I bought a new one this morning.A. stoodB. workedC. botheredD. operated4. It would have made a lot of ____ if you told me this two days earlier.A. effectB. resultC. outcomeD. difference5. All the people around the world have the same simple dream ______ they will always live in peace and comfort..A. thatB. whichC. whereD. when6. She is too fat, but she can't ________ sweets.A. removeB. resistC. rejectD. object7. The professor spoke very clearly to make his speech easy.A. to understandB. understandC. understandingD. understood.8. He's obviously quite embarrassed about it because he _________ me to tell anyone.A. promisedB. encouragedC. gotD. forbade9.He got into an _____ with Jeff in the pub last night and they still didn't reach any conclusion.A. acquaintanceB. argumentC. admirationD. agreement10. Since she ____ from the company, she begun to work as a volunteer for4 a house for the aged.A. differedB. roseC. retiredD. formed11. It isn't _______ to expect a surgeon to be able to make correct judgment in every case.A. reasonableB. naturalC. normalD. that I got12. Opening the book she found in it a whit, plain envelope with her name ______ on it.A. to printB. printedC. printingD. print13. “ Well, I'll tell you a secret.” Said the boy, with his mouth almost _____ my ear.A. touchedB. touchingC. touchD. to touch14. We thought of asking him for help then, but we were _____ to get in touch with him at that time.A. happyB. anxiousC. easyD. unable15.He's ________ to fail the exam if he doesn't do any revision.A. nearB. fitC. boundD. easyII 完形填空Music comes in many forms；most countries have a style of their own.At the turn of the century when jazz was born，America had no prominent(卓越的)__1__of its own.No one knows exactly when jazz was__2__，or by whom.But it began to be___3__in the early 1900s.Jazz is America's contribution to__4__music.In contrast to classical music，which __5__formal European traditions，jazz is spontaneous(自发的)and free form.It bubbles with energy，__6__the moods，interests，and emotions of the people.In the 1920s jazz sounded like America，and __7__it does today.The __8__of this music are as interesting as the music __9__.American Negroes，or blacks，as they are called today，were the jazz __10__.They were brought to Southern States as slaves.They were sold to plantation owners and forced to work long __11__.When a Negro died his friend and relatives formed a procession to carry the body to the cemetery.In New Orleans，a band often accompanied the __12__.On the way to the cemetery the band played slow，solemn music suited to the occasion.__13__on the way home the mood changed.Spirits lifted.Death had removed one of their relations，but the living were glad to be alive.The band played __14__music，improvising(即兴表演)on both the harmony and the melody of the tunes __15__at the funeral.This music made everyone want to dance.It was an early form of jazz.1．A.music B．songC．melody D．style2．A.discovered B．actedC．invented D．designed3．A.noticed B．foundC．listened D．heard4．A.classical B．sacredC．popular D．light5．A.forms B．followsC．approaches D．introduces6．A.expressing B．explainingC．exposing D．illustrating7．A.as B．soC．either D．neither8．A.origins B．originalsC．discoveries D．resources9．A.concerned B．itselfC．available D．oneself10．A.players B．followersC．fans D．pioneers11．A.months B．weeksC．hours D．times12．A.demonstration B．processionC．body D．march13．A.Even B．ThereforeC．Furthermore D．But14．A.sad B．solemnC．happy D．funeral15．A.whistled B．sungC．presented D．showedIII 阅读理解ALike many of my generation，I have a weakness for hero worship.At some point，however，we all begin to question our heroes and our need for them.This leads us to ask：What is a hero?Despite immense differences in cultures，heroes around the world generally share a number of characteristics that instruct and inspire people.A hero does something worth talking about.A hero has a story of adventure to tell and a community who will listen.But a hero goes beyond mere fame.Heroes serve powers or principles larger than themselves.Like high­voltage(电压)transformers，heroes take the energy of higher powers and step it down so that it can be used by ordinary people.The hero lives a life worthy of imitation.Those who imitate a genuine hero experience life with new depth，enthusiasm，and meaning.A sure test for would­be heroes is what or whom do they serve? What are they willing to live and die for? If the answer or evidence suggests they serve only their own fame，they may be famous persons but not heroes.Madonna and Michael Jackson are famous，but who would claim that their fans find life more abundant?Heroes are catalysts (催化剂)for change.They have a vision from the mountain top.They have the skill and the charm to move the masses.They create new possibilities.Without Gandhi，India might still be part of the British Empire.Without Rosa Parks and Martin Luther King，Jr.，we might still have segregated(隔离的)buses，restaurants，and parks.It may be possible for large­scale change to occur without leaders with magnetic personalities，but the pace of change would be slow，the vision uncertain，and the committee meetings endless.一．根据短文，写一篇30词左右的摘要____________________________________________________________________________________________________________________________________________________________________________________________________________________________二．根据所读短文，选择最佳选项1．Although heroes may come from different cultures，they ________. A．generally possess certain inspiring characteristicsB．probably share some weaknesses of ordinary peopleC．are often influenced by previous generationsD．all unknowingly attract a large number of fans2．According to the passage，heroes are compared to high­voltage transformers inthat ________.A．they have a vision from the mountaintopB．they have warm feelings and emotionsC．they can serve as concrete(具体的)examples of noble principlesD．they can make people feel stronger and more confident3．Madonna and Michael Jackson are not considered heroes because ___________________.A．they are popular only among certain groups of peopleB．their performances do not improve their fans morallyC．their primary concern is their own financial interestsD．they are not clear about the principles they should follow4．Gandhi and Martin Luther King are typical examples of outstanding leaders who ___________.A．are good at demonstrating their charming charactersB．can move the masses with the skill and the charmC．are capable of meeting all challenges and hardshipsD．can provide an answer to the problems of their people5．The author concludes that historical changes would ___________________________. A．be delayed without leaders with inspiring personal qualitiesB．not happen without heroes making the necessary sacrificesC．take place if there were heroes to lead the peopleD．produce leaders with attractive personalitiesBI work as an aid on a school bus. There is a guy Tyrell who is almost completely blind. Tyrell was all smiling for about a week. He's normally a quite happy kid, but I could tell this was different from the normally silly smile I see. Wednesday morning my curiosity finally got me to ask him why.He told me that he was going to ride his new 3-wheeled bike when he got home. He couldn't control his happiness. When he got off, he gave me a smile. A smile will forever be in my heart.The next morning, I noticed that his eyes were quite puffy (浮肿的). So were his mother's. I asked them why. She explained that was due to many hours of tears the night before. She said that Tyrell got to ride the bike once before he had to come in for dinner and was promised he could ride it again afterward. He left it in the back yard where they thought it would be safe.However, after dinner, the bike was nowhere to be found. They immediately broke into tears because they knew the thing that he treasured so much was stolen. She called her close friend to find some comfort.The friend called her up later and said that she forgot to tell Tyrell's mom that she had something for them and asked if it would be OK to bring it over. She, of course, was still crying from the thought that another bike would be impossible to afford and said yes. The friend brought over a huge box, in which there was a brand new bike for Tyrell.When they noticed what was in the box, they thanked their angel and cried even harder, not of sadness but of joy, and thankfulness.6. Why did the writer stress the guy's smile repeatedly in the first two paragraphs?A. His smile gave the writer a deep impression.B. The writer liked his happy smile very much.C. It set off how serious the loss of bike caused.D. The smile showed the happy ending of the story.7. Tyrell's mom cried so sadly at the lost bike because ____.A. her son wouldn't ride the bike any moreB. her family couldn't afford another bikeC. she felt very sad for the lost bikeD. she had just bought the bike for her son8. We can conclude from this story that ____.A. there are good people out thereB. offering someone helps is better than stealing from himC. the loss of the bike puts the family into a sad situationD. one can obtain happiness from helping othersCGoing to college has been such a new experience for me. Everything is different from when I was in high school. One thing I've noticed is that I haven't been focusing on my coursework like I planned.I thought I would spend most of my college life studying. But since I've been in college, about 60 percent of my time has been devoted to social life, while only 40 percent of my time has been devoted to my studies. I never knew I would make so many friends in such a short time.It's been so overwhelming (无法抵抗的)! I'm not saying that making friends is bad, but I'm starting to realize how much socializing has cut down on the time I should have spent on studying.Needless to say, that has to be changed.I've realized that I really don't want to spend an extra year or two here just because I slacked off as a freshman. So the first thing I'm going to do is to cut down on the amount of time I spend socializing. I will also have to say goodbye to a good part of the activities I like to attend.It's really difficult to cut these things out of my life, but I have to choose: I can have a full-time social life and fail college, or I can learn to balance my time between friends and studying and keep good grades. I think I'll stick to that second option!I may be a little strict on myself, but I'm here to get an education, not to learn how to socialize more! I want to have fun at college, but at the same time, I want to get a good education and have a bright future!9. What did the writer realize about his first year at college?A. He doesn't work as hard as in high school.B. Teachers don't care about him any more.C. He could make quite a lot of friends.D. He could spend much time on study.10. The writer makes a decision that he will ____.A. devote himself to his study rather than making friendsB. say good-bye to all his college activitiesC. cut down all his social life to have a good educationD. try not only to study well but also to have fun at college11. The underlined phrase “slack off” in the fifth paragraph is closest in meaning to “____”.A. do one's bestB. spare no effortC. have a good timeD. make less effort12. We can infer from the passage that the writer will ____ at college.A. spend more time on studyB. make a lot of friendsC. take more activitiesD. cut down his studying timeDAfter a couple has had their first child, to their disappointment they became infertile and couldn't have more children. Cloning would enable such a couple to have a second child, perhaps a younger twin to the child they already have. Many couples have difficulty having children, and sometimes it is impossible for couples to have children because they are infertile. Cloning would allow these couples to have children.It is hard to tell someone that they cannot use cloning to have children when no other possible ways to have children are available. This is one reason why it is difficult to decide whether cloning is moral or not. The following are some of the reasons why cloning should be allowed.Through cloning, research can progress. We possibly can learn more about cell. We may develop technology to allow easier genetic testing and fixing problems such as spinal cord injuries, cancer, and many more.Cloning organs for organ transplants (移植) is one of the major practical reasons that cloning should be allowed. There is always a high demand for organs. Some argue for the cloning of humans to create extra body parts. Others talk of just wanting to clone an organ to replace a faulty organ.Rejuvenation (恢复青春) is also a key argument for advocates (提倡) of cloning. Some scientists believe that injecting cloned healthy heart cells into damaged heart tissue will lead to healing of the heart. By combining the technology for cloning and the technology for growing human stem cells, conditions like Alzheimer's, Parkinson's, and some other ageing disease may be curable. The possibilities are endless and may be left undiscovered if human cloning is forbidden.13. The underlined word “infertile” in Para. 1 means “____”.A. unable to have childrenB. too poor to grow cropsC. poor in pregnant knowledgeD. unable to afford to bring up children14. How many reasons does the writer give in this passage about why cloning shouldbe allowed?A. 2.B. 3.C. 4.D. 5.15. Which of the following statements is NOT true?A. Cloning babies for infertile couples is moral.B. Through cloning, research work in cells can make great progress.C. Cloning cells can make some diseases concerning ageing curable.D. Cloning technology may help improve medical technology.16. From the passage, we can know the writer's attitude toward human cloning is ____.A. negativeB. supportiveC. uninterestedD. opposingEBARCELONA (Reuters) —“Galactic Suite”, the first hotel planned in space, expects to open for business in 2012 and would allow guests to travel around the world in 80 minutes.Its architects say the space hotel will be the most expensive in the galaxy, costing $4 million for a three-day stay.During that time guests would see the sun rise 15 times a day and use Velcro suits to crawl (爬) around their pod (分离舱) rooms by sticking themselves to the walls like Spiderman.Company director Xavier Claramunt says the three-bedroom hotel's joined up pod structure, which makes it look like a model of molecules, was based on the fact that each pod room had to fit inside a rocket to be taken into space.“It's the bathrooms in zero gravity that are the biggest challenge,” says Claramunt. “How to provide enough space for more private activities of the guests is not easy.”But they may have solved the issue of how to take a shower in weightlessness — the guests will enter a spa room in which bubbles of water will float around.When guests are not admiring the view from the windows of their pod rooms'， they will take part in scientific experiments on space travel.“There is fear associated with going into space,” said Claramunt. “That's why the shuttle rocket will remain fixed to the space hotel for the duration of the guests' stay, so they know they can get home again.”“But,” says Claramunt, “I'm hopeful that the impact of seeing the earth from a distance will stimulate (激发) the guests' urge to value and protect our planet.”17. Which of the following might be the best title for this passage?A. “Galactic Suite”: the first hotel planned in spaceB. Fly me to the moon: space hotel sees 2012 openingC. Fly to the moon: a greatest dream for humansD. Building a space hotel: a dream or a reality?18. Which of the following is NOT what guests can do in “Galactic Suite”?A. Watching the sunrise.B. Taking a weightless shower.C. Doing scientific experiments.D. Walking in space.19. Suppose we will travel to space, the following will be the problems we must solve EXCEPT ____.A. weightlessnessB. fearC. pollutionD. money20. The writer's writing this passage is to ____.A. prove space travel is possibleB. tell us a bright dream of going to spaceC. explain some problems existing in space travelD. report a space hotel to be completed by 2012IV 单词拼写1. The role of the news m_________ informing public opinion is of great importance.2. The small town looks e__________ as it did when it was built 200 years ago.3. I'm sorry to d_________ you so late, but I was wondering if I could use your phone.4. For a teacher to hit a child is not just m__________ wrong but also illegal.5. These profits are based on the a__________ that prices will continue to rise.6. The treatment won't cure her — it m__________ stops the pain.7. The law f__________ the sale of cigarettes to people under the age of 16.8. We have worked out a new set of p__________ for using this machine.9. No one o__________ when the manager said it was time to go home.10. Every servant will r__________ from his position at the age of 60.V 书面表达阅读下面的文字，用英语写一篇120-150词的短文。

高中英语人教新课标必修8Unit2 Cloning单元练习一、听力(听力)（共20小题；共20分）第一节（共5 小题；每小题1.5 分，满分7.5 分）听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. Where does the conversation probably take place?A. At a restaurant.B. At the doctor's.C. In a coffee shop.2. What time is it now?A. 9:15 p.m.B. 9:30 p.m.C. 9:45 p.m.3. Why can't the woman meet the man this evening?A. The man will visit his friend.B. She will go to visit her friend.C. Her friend will come to see her.4. What does Billy mean?A. His brother never forgets his own birthday.B. His brother will give him a birthday present.C. His brother is coming to celebrate his birthday.5. What does the woman suggest the man do?A. Order a new book.B. Read another book.C. Search the shelf again.第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话或独白。

每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项。

Section Ⅱ— Learningabout Language,Using Language,Summing Up & Learning Tip课后篇稳固研究一、单句改错1.What I need most is mere your care and attention.答案 : mere→merely2.The temple is still in a good condition.答案 : 去掉 a3.After a while,the discussion was come back to life.答案 : come→brought4.The plan sounds reasonably,but it is hard to carry out.答案 : reasonably →reasonable5.He took up gardening shortly he retired.答案 : shortly后加after6.He paid back all the money he owed for me.答案 : for →to7.I really don’t want to bother you of my own problem.答案 : of →with/about8.Many customers can ’t resist buy what they don ’t really need.答案 : buy→buying二、变式训练1.The little boy was raised by his grandfather.The little boy by his grandfather.答案 : was brought up2.All the children are asked to do morning exercises because a healthy body can refusedisease.All the children are asked to do morning exercises because a healthy body can disease.答案 : resist3.We walked here and there to look for a taxi but failed.We walked here and there to look for a taxi but .答案 : in vain4.Sometimes I help my mother do the cooking at home.I help my mother do the cooking at home.答案 : From time to time5.With thousands of soldiers having cleaned the snow on the road,the Jingzhu freeway was brought back to life.After thousands of soldiers the snow on the road,the Jingzhu freeway was brought back to life.答案 : had cleaned6.It occurred to me that she might be late.It me that she might be late.答案 : struck三、依据提示翻译句子1. 我忽然意识到我能够为我的项目筹款。

号顿市安谧阳光实验学校Unit 2 CloningⅠ. 单词拼写1. The role of the news u informing public opinion is of great importance.2. The small town looks e as it did when it was built 200 years ago.3. I’m sorry to d you so late, but I was wondering if I could use your phone.4. For a teacher to hit a child is not just m wrong but also illegal.5. These profits are based on the a that prices will continue to rise.Ⅱ. 同义句转换1. At the beginning, he was against my proposal. However, in the end, he changed his mind.At first he hesitated about my suggestion, but he agreed.2. Later they learnt that an earthquake had taken place in that area. Then that the area had been hit by an earthquake.3. Although he was not strong, he joined in the work.weakness, he took part in the work.4. We are still far from being able to clone extinct animals.We are still from being able to clone extinct animals.5. They don’t know if the new policy is in their favour.They this new policy can bring benefit to them.Ⅲ. 翻译句子1. 告诉你父母真相吧，他们肯定会知道一切的。

Unit 2 Cloning第Ⅰ卷第二部分：阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

A★★☆☆☆At the age of 16, Julia Butterfly Hill quit school and worked at a restaurant. For many years, she was only interested in making money and material things. Then one day she had a serious car accident, which changed her life. Hill said: “I realized I wanted to find a more powerful purpose for being here on this planet.”As soon as she recovered, Hill traveled to California. There she saw ancient redwood trees, which are the largest trees in the whole world. The wood from redwood trunks is very hard. So the Pacific Lumber Company cut down many of the huge redwoods to use for construction. There are not many forests of these trees left.Many environmental activists want to protect the remaining trees. The redwoods are very important to the environment.In 1997 Hill learned a group called Earth First was working to protect a particular group of trees. They decided to send someone up into a redwood tree, hoping this would stop the company from cutting the trees down. Julia Butterfly Hill volunteered.Hill lived in the tree for over two years without ever coming down. Her home was a 6-by-8-foot tree house, 180 feet up. It is always cold and wet in a redwood tree. There were even very serious winter storms while Hill was in the tree. The wind and cold almost knocked Hill out of the tree. But she did not fall — she survived.Finally, after years of arguing, the company decided to protect Luna, the tree Hill lived in. They signed an agreement to never cut down this huge redwood tree or the trees around it. When Hill put her feet on the earth again, she began to cry. But from that moment on Hill hasn’t stopped working to protect t he environment.21. Julia Butterfly Hill traveled to California _____.A. to find a new jobB. to build a tree houseC. with the hope of joining Earth FirstD. in expectation of doing something meaningful22. The redwood trees were cut down mainly _____.A. because they might fall over at any timeB. because they had great economic valueC. to protect other trees in the forestD. to make space for constructions23. Julia Butterfly Hill’s living conditions in the tree were _____.A. comfortableB. coolC. toughD. satisfying24. What can we learn about Julia Butterfly Hill from the text?A. She has a sense of social responsibility.B. She failed to protect the redwood tree.C. She built a new house in the forest.D. She is a self-centered woman.B★★★☆☆There are a lot of products out there that make your life easier. Some, however, are a little sillier than others — so much that they seem like joke products. Here are a few products that sound crazy, but actually rule.Sleep PhonesIt’s hard to imagine something sillier than a music-playing headband you wear while you sleep, but they exist —and are quite popular. Sleep Phones won’t give you the highest quality sound in the world, but if you prefer to fall asleep to music, they’refar more comfortable than normal headphones. While they’re a bit expensive, they might be perfect for you. T here’s also a wireless version (版本) if you prefer.Onion GogglesIf cutting onion brings on the waterworks no matter what you try, i t’s time for desperate measures. We tested a bunch of methods for avoiding onion tears, and found the best solutions came down to cutting the onion under a vent (通风孔), or wearing these stylish and awesome goggles.Lock LacesThere’re some great ways to tie your shoes better, but if you long for the laceless shoes of your childhood days, Lock Laces are a pretty good choice. They’re basi callyelastic (有弹性的) laces that remove the need to tie your shoes. Sure, people will make fun of you, but you can make fun of them after they trip over their own untied laces. Or you can make your own slip-on shoes with elastic tubing.2D-GlassesHate 3D-movies, but have to go to one? The difference between 2D-glasses and 3D-glasses lies in their lenses (镜片). Each lens of 2D-glasses blocks the same picture, so each eye gets the same picture, while each lens of 3D-glasses blocks a different picture, so each eye gets a different picture which the brain interprets as 3D. Now you have a pair of glasses that can save you from the headache caused by wearing3D-glasses which are popular in our movie theaters. You can buy them or make a pair for yourself.25. What do we know about Sleep Phones?A. There are two versions.B. They’re comfortable but unhealthy.C. They give you the best quality sound.D. They’re cheaper than other headphones.26. The underlined part “brings on the waterworks” in the text probably means _____.A. makes your eyes waterB. makes your fingers hurtC. destroys your water pipesD. adds to your washing work27. What is the advantage of Lock Laces?A. They are strong and lasting.B. They help you walk comfortably.C. They are stylish and eco-friendly.D. They save you from tying your shoes.28. Compared with 3D-glasses, 2D-glasses _____.A. are cheaper and thinnerB. won’t give you a headacheC. let you see a different pictureD. are more popular in movie theatersC★★★★☆A team led by a nurseryman (花圃工人) and his sons has raced against time for20 years, using branches from some of the world’s biggest and most long-lasting trees to produce clones that could restore ancient forests and help fight climate change.Now comes the most ambitious step of the project: getting the new trees into the ground. Plantings of two dozen clones from California’s huge coastal redwoods will take place Monday in seven nations: Australia, New Zealand, Great Britain, Ireland, Canada, Germany and the U.S.The lab-produced trees are genetic copies of three huge trees that were cut down in northern California more than a century ago. Remarkably, new branches still grow from the stumps (树桩), including one known as the Fieldbrook Stump, which measures 35 feet in diameter (直径). It’s believed to be about 4,000 years old.“We need to reforest the planet. To do that, it just makes sense to use the largest, oldest trees that ever lived,” said David Milarch, co-founder of the non-profit Archangel Ancient Tree Archive.Milarch and his sons Jared and Jake, who have a family-owned nursery, became concerned about the condition of the world’s forests in the 1990s. They began traveling across the U.S. in search of “champion” trees that have lived hundreds or even thousands of years, believing that better genes make it possible for them to outlive others of their species. Scientific opinion varies on whether that’s true, with skeptics saying the survivors may simply have been lucky.The Archangel team says the y’ve developed several methods of producing genetic copies. They focus on towering sequoias and redwoods, considering them best suited to absorb great amounts of carbon dioxide (CO2), the greenhouse gas primarily responsible for climate change.The challenge is to find places to put the trees, people to look after them and money to continue the project, Jared Milarch said. The group is funded through donations and doesn’t charge for its clones.“A lot of trees will be planted by a lot of grou ps on Arbor Day, but 90 percent of them will die,” David Milarch said. “You can’t plant trees and walk away and expect them to take care of themselves.” Those receiving Archangel redwoods have promised to care for them properly.29. According to the text, the clones _____.A. are rather expensiveB. are based on dead ancient treesC. have been experimented for 20 yearsD. have been widely grown across the U.S.30. To reforest the planet, David Milarch chooses the largest, oldest trees because _____.A. they are lucky treesB. they have better genesC. they are easier to plantD. they look more beautiful31. David Milarch’s team believes that genetic copies from sequoias and redwoods _____.A. can take in more greenhouse gasesB. are hard to survive for a long timeC. are likely to cause climate changeD. may be a threat to existing plants32. What is stressed by David Milarch in the last paragraph?A. The need of financial support.B. The difficulty of finding places.C. The importance of caring for trees.D. The challenge of running his group.D★★★★☆During the Middle Ages, most things that people did not understand were explained through religion. The Catholic Church sought to silence those who tried to understand and explain the world in natural terms, and banned dissection (解剖) of humans.Leonardo da Vinci was one of the first people of the Renaissance to use the modern scientific method. He carefully observed nature, conducted experiments, and arrived at conclusions. His research unavoidably brought him into conflict with the Church.Leonardo spent his life studying the world around him and filled many notebooks with drawings and ideas inspired by nature. He studied human anatomy (人体解剖学) by dissecting dead bodies, made detailed notes, and drew large numbers of pictures to explain.He studied the flight and anatomy of birds in order to design a flying machine. He was not successful, although he tried out several strange-looking machines.As a scientist, Leonardo made great contributions in the fields of anatomy, botany (植物学) and physics. Leonardo was the first person to note that the number of rings of a tree was the same as its age. He was also the first person to describe the arrangement of leaves in plants and draw parts of the body in cross-section.Leonardo was also a great inventor. He did not seek simply to better understand the world. He wanted to change it through the invention of new and useful machines. His curiosity took him in many directions.Although some of his inventions, like the extendable ladder (伸缩梯), were practical in his time, others, such as the helicopter (直升飞机), would only be useful hundreds of years later. They required new technologies.Leonardo lived hundreds of years before many of his ideas were fully put to use. He was both a man of his time and a man of the future. From flight to deep sea exploration, much in our modern world was first visualized by Leonardo.33. Leonardo dissected dead human bodies _____.A. for pleasureB. for scientific researchC. to show his anger to the ChurchD. to teach others about human anatomy34. Why was Leonardo “a man of the future”?A. He pictured many modern inventions.B. His ideas were totally realized in his time.C. His inventions influenced later generations.D. He was the founder of modern technologies.35. We can infer from the text that Leonardo _____.A. sent his helicopter into the airB. was fond of collecting notebooksC. was the first person to study the worldD. helped develop science and technology第二节（共5小题；每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。

Unit 2 cloning一、单词拼写1. The brother ’s d_____ widely in their tastes.2. The question is quite s_______, while that one is much more complicated.3.It is quite d_____ to hear the bad news.4. Smoking is f_____ in public places.5.His suggestion sounds quite r_________ to most of us.6.The film was a _____ ( 商业的 )success.7.I ’d like to come, too, if you have no _____( 反对 ).8.He ______ ( 仅仅 )asked us our names.9.There were strong ______ ( 争论 ) for and against the plan.10.He always managed to ______(得到)what he wanted.二、句型转换11.At the beginning, he was against my proposal. However, in the end,he changed his mind.At first he hesitated about my suggestion , but he _____ ______ agreed.ter they learnt that an earthquake had taken place in that area.Then ______ _____ _____ that the area had been hit by an earthquake.13.Although he was not strong, he joined in the work._____ ______ _____ weakness, he took part in the work.14.We are still far from being able to clone extinct animals.We are still _____ _____ _____ from being able to clone extinct animals.15.They don ’t know if the new policy is in their favor.They _____ _____ this new policy can bring benefit to them.16.Have you any objection to my opening the window?Would you _____ _____ my opening the window?17.The fact that she seemed to develop normally was very encouraging. ( 改写成两个句子)（that 引导同位语从句，说明fact 的内容， that 不做成分。

unit2 CloningⅠ.阅读理解AThere are many ways in which human cloning is expected to benefit humans.Dr Richard Seed, one of the leading supporters of humancloning technology, suggests that it may someday bepossible to completely change the aging process becauseof what we learn from cloning.Scientists believe that they may be able to treat heart attack victims by cloning their healthy heart cells and injecting them into the areas of the heart that have been damaged. Heart disease is the number one killer in the US and several other industrialised countries.There has been a breakthrough with human stem cells. Embryonic stem cells can be grown to produce organs to repair or replace damaged ones. Skin for burn victims, brain cells for the brain damaged, hearts, lungs, and kidneys could be produced. By combining this technology with human cloning technology, it may be possible to produce needed organs for suffering people that will be free of rejection by their immune systems. Conditions such as Alzheimer’s disease, Parkinson’s disease, heart failure, and other problems can be cured if human cloning and its technology are not banned.Though current treatments for infertility (不生育) are getting a fair amount of publicity in the news, they, in terms of percentages, are not very successful. Some data shows that current infertility treatments are less than 10 percent successful. Couples go through physically and emotionally painful procedures for a small chance of having children. Many couples run out of time and money without successfully having children. Human cloning could make it possible for many more infertile couples to have children than ever before possible.语篇解读：本文作者从几个方面介绍了克隆人技术给人类带来了利益。

Unit 2 Cloning单元加餐练Ⅰ.完形填空It was 1972, and I was in second grade. In the classroom, the teacher, Ms Boyette, was __1__ aloud to us from Island of the Blue Dolphins. And we had just come to a part of the book where the main character was training a wild dog. I was listening, caught up in the __2__ of all.Not far away from me, there seated a boy who always frightened or __3__ others, so I was __4__ of this boy. While Ms Boyette was reading, I looked over at him, for he was someone I was in the __5__ of keeping an eye on. I noticed that he was listening too, that he was engaged by the __6__， and that he was leaning forward in his seat and listening with all his heart. I __7__ at him, open­mouthed. I was __8__ with a sudden knowledge that this boy was in fact just __9__ me. He was a kid who liked a story. The boy must __10__ my eyes on him, because he turned. Then something __11__ happened. He smiled at me. __12__， I smiled back, unafraid. We were two kids smiling at each other.Why have I never forgotten this small moment? Why do I still __13__ every detail of it? I think it's because that moment illustrates so beautifully the __14__ of reading out loud.It shows us into a safe room, where everyone involved, the reader and the listener, can have that chance to __15__ each other. We humans long not just for the story, not just for the flow of language, but for the connection that comes when words are read aloud.本文属于记叙文，讲述了作者在一次朗读课上与自己害怕的男孩的关系发生了转变。