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1、单元综合检测(三)Unit 3Science and nature(时间：100分钟；满分：120分).阅读理解(共15小题；每小题2.5分，满分37.5分)AIn 2001, scientists at Texas A&M University successfully cloned a cat for the first time, but this copy cat is no mirror image of the original.Copy Cat (CC) was the first cat ever cloned.In 2001, researchers at Texas A&M
2、 University created the clone from the DNA of a calico cat(三色猫) named Rainbow after a failed attempt at cloning a dog.Interestingly, Rainbow and Copy Cat are different in many ways.Rainbows coat is brown, and white, while CCs is gray and white; Rainbow is shy, but CC is outgoing and curious. The dif
3、ferences in the two cats indicate that identical DNA wont necessarily create similar appearances or personalities because there are many other factors that contribute to both surface characteristics and temperament(性情)CC has since gone on to have three healthy kittens via the natural method, and the
4、 research that led to her creation became the foundation for a Californiabased pet cloning company called Genetic Savings & Clone, Inc.However, the cat cloning project caused criticism from animal welfare groups, which pointed out that millions of cats are killed in shelters each year due to pet ove
5、rpopulation.They argued that the large sums of money spent on creating more cats could be put to better use providing homes for strays.There are also objections to the cloning process itself.Many people consider cloning cruel, as it is a process that can lead to deformities and other problems, which
6、 is evident in the fact that many clones die within months or even days of creation.Much to the delight of animal welfare advocates, after cloning five cats in total, Genetic Savings & Clone shut down in 2006.The reason for the companys close was its inability to make its cloning technology affordab
7、le and thus accessible to mainstream consumers.【语篇解读】本文是一篇说明文。文章主要讲述的是克隆猫所带来的令人惊讶的结果以及大众对她的看法。1What is the best title of the passage?ACloned Catsa Surprising Development on TechnologyBCloned CatsCloning Produces Surprising ResultsCCloned Catsa Cruel Research in ScienceDCloned Catsa Project Caused Cr
8、iticismB标题归纳题。根据文中的主题讲述的是克隆出来的猫在性格和外观上都有所不同，这是比较鲜明的特点，因此文章的标题应该体现这一点，因此选B。2Which of the following about CC is TRUE?AThe researchers failed in cloning it in 2001.BIts fur is brown and white as the calico cat.CIt is outgoing and curious as Rainbow.DIt doesnt have similar personalities as Rainbow.D细节理解
9、题。根据文中第三段“The differences in the two cats indicate that identical DNA wont necessarily create similar appearances or personalities”即可判断答案。3Whats the underlined word in the 6th paragraph similar to?ACriticism.BWaste of money.CDisability.DOverpopulation.C词义猜测题。根据文中第六段“cruel”，“other problems”和“which is
10、 evident in the fact that many clones die within months or even days of creation”可判断许多人认为克隆残酷会造成残疾和许多问题，甚至出现死亡，因此画线词指的是身体上的残疾。4The reason for the companys demise is that cloning is Aa waste of moneyBcruel sometimesCinaccessible to most peopleDaffordable to consumersC细节理解题。根据文章最后一段“.its inability to
11、make its cloning technology affordable and thus accessible to mainstream consumers.”可判断答案。BPeter Onruang，a Hollywood businessman，has paid $310，000 to clone his best friend Wolfie，a lovely dog.He said，“Wolfie was more than just a pet to me.” Wolfie died two years ago，at the age of 15.But long before
12、she and her sister Bubble passed away，Onruang had plans to bring them back to life.Onruang said，“I buried them at home.Each time I visit them，I say，Hi，Im making a new body for you.”Finally，Onruang found the South Korean biotechnology company RNL Bio，which can and will clone animals.Onruang collected
13、 his dogs stem cells (干细胞)，and then he started a website My Friend A，so he could earn and save the $310，000 that the cloning would cost.The new dogs should look identical (完全相同的) to Wolfie and Bubble.When the cloning process is done，Onruang may end up with several clones of each dog.But Onruang admi
14、ts hes still not sure that they will be exactly the same.Scientists cloned the first animal，a sheep named Dolly，in 1996 in Scotland.That project has raised ethical (伦理的) questions about where science should draw the line.Another question is whether such technique will lead to a day when humans could
15、 be cloned.“If I had an opportunity to clone myself，I would do it readily，” Onruang said.“Because its me，Im raising myself.I have already known exactly my strengths and weaknesses.This person is going to be the new and improved me，and will live the life Ive always wanted to live.”【语篇解读】这篇短文讲的是一位叫Peter Onruang的人因为他心爱的狗死了，想克隆他的狗的故事。5Onruang started the website My Friend A in order to Aencourage more people to clone their petsBdraw peoples attention to cloningCcollect his dogs stem cellsDraise money to pay for the cloningD细节理解题。根据第二段“he started a website MyFriendA，so he could earn and s
