北京人大附中小升初分班考试真题：英语.docx

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1、北京人大附中小升初分班考试真题：英语北京人大附中小升初分班考试真题：英语With only about 1, 000 pandasleft in the world, China is desperately trying to clone （克隆）the animal and save the endangered species （物种）. Thats amove similar to what a Texas A M University researchers have beenundertaking for the past five years in a project calle

2、d “Noahs Ark”.Noahs Ark is aimed atcollecting eggs, embryos （月丕月台）， semen and DNA ofendangered animals and storing them in liquid nitrogen. If certain speciesshould become extinct, Dr. Duane Kraemer, a professor in Texas A MsCollege of Veterinary Medicine, says there wou1d be enough of the basicbuil

3、ding blocks to reintroduce the species in the future.It is estimated that asmany as 2, 000 species of mammals, birds reptiles will become extinct in overlOO years. The panda, native only to China, is in danger of becoming extinct inthe next 25 years.Thisweek, Chinese scientists said they grew an emb

4、ryo by introducing cells from adead female panda into the egg cells of a Japanese white rabbit. They are nowtrying to implant the embryo into a host animal.The entire procedurecould take from three to five years to complete.“The nuclear transfer （核子移植）of one species to another is not easy, and the l

5、ack of available （capable ofbeing used） panda eggs could be a major problem, “ Kraemer believes. They willprobably have to do several hundred transfers to result in one pregnancy（having a baby）. It takes a long time and its difficult, but this could begroundbreaking science if it works. They are cer

6、tainly not putting any livepandas at risk, so it is worth the effort, “ adds Kraemer, who is one of theleaders of the Project at Texas A M, the first-ever attempt at cloning adog.“They are trying to dosomething thats never been done, and this is very similar to our work inNoahs Ark. Were both tryinn

7、g to save animals that face extinction. I certainlyappreciate their effort and theres a lot we can learn from what they areattempting to do. Its a research that is very much needed.”1. The aim of uNoahs Ark“ project is to.A. make efforts to clonethe endangered pandasB. save endangeredanimals from dy

8、ing outC. collect DNA ofendangered animals to studyD. transfer the nuclearof one animal to another2. According to Professor Kraemer, the major problem in cloning pandas wou 1 d bethe lack of .A. available pandaeggs B. host animalsC. qualifiedresearchers D. enough money3. The best title for the passa

9、ge may be .A. Chinas Success inPandas CloningB. The First ClonedPanda in the WorldC. Exploring the Possibilityto Clone PandasD. China the NativePlace of Pandas Forever4. From the passage we know that .A. Kraemer and his teamhave succeeded in cloning a dogB. scientists try toimplant a pandas egg into

10、 a rabbitC. Kraemer will workwith Chinese scientists in clone researchesD. about two thousand ofspecies will probably die out in a century【解析】*讲述中国正在竭力克隆濒临绝种的熊猫，这和Texas A MUniversity的 Noahs Ark（诺亚方舟）工程极为相似，都是想拯救濒临灭绝的动物。1. Bo语义理解题。从第2段内容可知，“诺亚方舟”工程的目标是把濒临 灭绝的动物的蛋（卵）、胚胎、精液和DNA储存在液体氮中，如果某一种动物濒临 灭绝时，将来可

11、以重现这一动物。2. Ao细节题。从第6段第1句话The nuclear transfer （核子移植）of one species toanother is not easy, and the lack of available （capable of being used ） pandaeggs could be a major problem 可以做出正确判断。3. Co主旨题。从*内容来看，无论是中国还是世界克隆熊猫还没有成功， 所以排除A、B项;D项内容明显与*内容不符，故排除。所以“探索克隆熊猫的 可能性”应该是这篇*的标题。4. Do判断题。此题B项的干扰性较强，但由于它没有说明是 Chinesescientists,所以应排除。A、C项明显与原文不符。根据*第3段第1 句可知答案非D莫属。