1、Unit 2 CloningSection Warming Up,Pre-reading,Reading we should try our best to rebuild our houses. 答案:on the other hand三、单项填空1Many Chinese universities provided scholarships for students financial aid. A.in favour of B.in need ofC.in face of D.in honour of答案:B解析:in favour of “赞成,支持”;in need of “需要”;
2、in face of “面临”;in honour of “为纪念,为庆祝”。句意 :“许多中国大学为那些需要经济援助的学生们提供奖学金。”2The drama from the novel;the story is not told directly by the author but is acted out by actors on a stage. A.results B.datesC.differs D.recovers答案:C解析:result from “ 起因于”;date from “始于,起源于”;differ from “与不同”;recover from “从中康复”。
3、由下文的“故事不是由作者直接讲出来 ,而是由演员们在舞台上表演出来”可知应选择 differs。3He objects to the students do their homework late at night. A.making B.makeC.force D.forcing答案:A解析:句意:他反对让学生们做作业到深夜。object to doing sth.“反对做某事”,make sb.do sth.“使某人做某事”;force sb.to do sth.“强迫某人做某事” 。4The boy was so much by what the girl said that he wo
4、uld never see her. A.paid off B.cast downC.accumulated D.obtained答案:B解析:句意:男孩被那个女孩所说的话弄得心情很沮丧,他永远不愿再看见她。cast down “使心情沮丧 ”。pay off“得到好结果 ”;accumulate“积累 ”;obtain“得到” 。5Dont be discouraged.All your efforts will in the end. A.pay for B.pay offC.pay back D.come true答案:B解析:pay for 表示“为付钱”;pay off 表示“得到回
5、报 ”;pay back 表示“偿还”;come true 表示“成为现实 ”。根据本句句意 “不要泄气,你所有的努力最终会得到回报的”可知答案为 pay off。四、单句改错1Customs different in different countries.答案:第一个 differentdiffer2Three stones cast to the dog before it was driven out.答案:cast 前加 were3The two-day break can release the students,but on the one hand,the children m
6、ay waste too much time on TV or Internet games.答案:oneother4It can be difficult clone a tiger in a short time.答案:clone 前加 to5His patience has paid back and he has won the match.答案:backoff五、阅读理解 The United States government wants to know what the public thinks about its findings on the safety of clone
7、d animals.The Food and Drug Administration says meat and milk from clones of adult cattle,pigs and goats are safe to eat.An F.D.A.official called them “as safe to eat as the food we eat every day”.And when those clones reproduce sexually(有性繁殖),the agency says,their offsprings(后代 ) are safe to eat as
8、 well.But research on cloned sheep is limited.So the F.D.A.proposes that sheep clones can not be used for humans food.The United States could become the first country to approve the sale of foods from cloned animals.First,however,the public will have ninety days to comment on three proposed document
9、s.On December 28th the F.D.A.released a long report,called a draft risk assessment,along with two policy documents.The agency says it must receive comments by April 2nd.The F.D.A.seemed ready to act several years ago,but an advisory committee called for more research.For now,the government will cont
10、inue to ask producers to honor a request that they will not sell foods from cloned animals.Clones are still rare.They cost a lot and are difficult to produce.The F.D.A.says most food from cloning is expected to not come from clones themselves,but from their sexually reproduced offsprings.It says clo
11、nes are expected to be used mostly as breeding animals to spread good qualities.Public opinion studies show most Americans do not like the idea of food from cloned animals.But this research also shows the public knows little about cloning.Cloning differs from genetic engineering.A cell taken from a
12、so-called donor animal is grown into an embryo(胚胎)in the laboratory.Next,the embryo is placed into the uterus(子宫)of a female animal.If the process is successful and the pregnancy reaches full term,a genetic copy of the donor animal will be born.1From the passage we know that . A.foods from cloned an
13、imals are popular in America B.cloned adult animals are safe to eat except sheep C.cloned animals will be easy to produce D.most foods from cloning is expected to take place of other foods 答案:B解析:推理判断题。从文中第二段可推出,除克隆绵羊外 ,其他克隆动物吃起来是安全的。2The main purpose of the text is to . A.tell an interesting storyB
14、.give some advice on foods C.give a reportD.compare different opinions 答案:C解析:主旨大意题。本篇文章是关于克隆食物的安全问题的报道。 3Who believe(s) that most foods from cloning are safe to eat?A.Most Americans.B.An advisory committee.C.Critics.D.The F.D.A.答案:D解析:事实细节题。从第二段第一句“The Food and Drug Administration says meat and mil
15、k from clones of adult cattle,pigs and goats are safe to eat.” 可知。 4It can be inferred from the last paragraph that . A.cloning has much in common with genetic engineeringB.not every cell taken from a donor animal can grow into a genetic copy C.the donor animal should be a female one D.cloned animals grow faster than normal ones 答案:B解析:推理判断题。从最后一段 “If the process is successful and the pregnancy reaches full term,a genetic copy of the donor animal will be born.”可知答案。
