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1、课时作业(五)必修1Unit 5 Nelson Mandelaa modern hero(限时：45分钟).多项选择1As crimes become more complex, the police have to _ more scientific means to analyse clues and narrow down the list of suspects. Agive off Bset downCturn to Dblow up2Can you imagine how lucky we were? We had a narrow _ when a tree fell just
2、in front of our car.Aappearance BescapeCexit Dentrance3I am trying to do what is best, but _ Ive got to consider the cost, which is of great importance. Aequally BeventuallyCnaturally Devidently4All the foreigners coming to China have to move in _ or they will be sent back to their own countries. An
3、aturally BnormallyCinstantly Dlegally5Worknet has a staff of 28 people, _ to assisting the community in their search for employment or training. Aaddicted BdevotedCassociated Dconcerned6The moment I saw him, his name simply _ me, and I stood there not knowing how to address him. Achoked BescapedCfai
4、led Dconfused7I cant say Im the best. I have only _ made more efforts than others.Adefinitely BrelativelyCobviously Dcertainly8After hours of searching, their patience was _ and they found what they were looking for. Acalculated BconfirmedCrewarded Devaluated9Everybody present at the meeting agreed
5、to stick to the _ that everyone should be treated fairly. Apurpose BambitionCprinciple Dlevel10After running for a mile yesterday, I was almost _， not feeling bad, though. Aout of shape Bout of breathCout of control Dout of order.阅读理解In an ideal world, people would not test medicines on animals.Such
6、 experiments are stressful and sometimes painful for animals, and expensive and timeconsuming for people.Yet animal experimentation is still needed to help bridge vast gaps in medical knowledge.That is why there are some 50 to 100 million animals used in research around the world each year.Europe, o
7、n the whole, has the worlds most restrictive laws on animal experiments. Even so, its scientists use some 12 million animals a year, most of them mice and rats, for medical research.Official statistics show that just 1.1 million animals are used in research in America each year.But that is misleadin
8、g.The American authorities do not think mice and rats are worth counting and, as these are the most common laboratory animals, the true figure is much higher.Japan and China have even less comprehensive data than America.Now Europe is reforming the rules governing animal experiments by restricting t
9、he number of animals used in labs.Alternatives to animal testing, such as using human tissue or computer models, are now strongly recommended.In addition, sharing all research results freely should help to reduce the number of animals for scientific use.At present, scientists often share only the re
10、sults of successful experiments.If their findings do not fit the hypothesis being tested, the work never sees the light of day.This practice means wasting time, money, and animals lives in endlessly repeating the failed experiments.Animal experimentation has taught humanity a great deal and saved co
11、untless lives.It needs to continue, even if that means animals sometimes suffer.Europe s new measures should eventually both reduce the number of animals used in experiments and improve the way in which scientific research is conducted.11What is the main idea of this passage?AThe success of animal e
12、xperiments should be ensured.BBan on the use of animals in the lab should be enforced.CGreater efforts need to be taken to reduce the number of lab animals.DScientists should be required to share their research results with each other.12Which of the following statements is true about animals used in
13、 the lab?AAmerica uses only about 1.1 million lab animals per year.BEurope does not use mice and rats as lab animals at all.CBritain does not use as many lab animals as China does.DJapan has limited data on the number of lab animals used each year.13Which of the following is mentioned as an alternat
14、ive to replace animal experiments?AStatistical studies. BComputer models.CDNA planted in animals. DTissue from dead animals.14What usually happens to unsuccessful animal experiments?AThey are not revealed to the public.BThey are made into teaching materials.CThey are collected for future publication
15、.DThey are not removed from the research topic list.完成句子15He taught us during the lunch breaks and the evenings when we _. (asleep)他在午餐后的休息时间及晚上本该睡觉的时间教我们学习。16Was it because of murder _？(sentence)他是因为谋杀才被判处死刑的吗？17A hobby is what you never get tired of_， the more fun you will have. (devote)爱好是不会让你感到厌倦的你投入的时间越多，获得的乐趣越多。18But for your timely encouragement, I _ after
