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2017年高中英语选修八（人教版）_第一单元过关检测
2017年高中英语选修八（人教版）_第一单元过关检测.doc
2017年高中英语选修八（人教版）_第二单元过关检测.doc
2017年高中英语选修八（人教版）_第三单元过关检测.doc
2017年高中英语选修八（人教版）_第四单元过关检测.doc
2017年高中英语选修八（人教版）_第五单元过关检测.doc
　　第二单元过关检测
　　(时间:90分钟　满分:120分)
　　Ⅰ.阅读理解(共12小题;每小题2.5分,满分30分)
　　阅读下列短文,从每题所给的四个选项(A、B、C、D)中,选出最佳选项。
　　A
　　导学号53080020
　　A team of Michigan State University(MSU) researchers has developed a new,more efficient way of cloning zebrafish,a breagh that could have an impact on research into human health.
　　Zebrafish are quickly becoming the animal of choice for many researchers.
　　“After mice,they are the most commonly used vertebrates,that is,animals with backbones,in genetic studies,”says Jose Cibelli,the leader of the team.“They are used in cancer and heart-disease research because they have many of the same genes as people have.”
　　For more than 20 years,zebrafish have also served as an excellent model for understanding both normal development and birth imperfections.More recently,research with zebrafish has extended to modeling human diseases.
　　Traditional cloning uses an egg and a donor(捐赠者) cell.The DNA is removed from the egg and replaced by the DNA taken from the donor.The resulting fish is an exact genetic copy of the donor.In Cibelli’s technique,the egg is removed from the female zebrafish and placed in the ovarian(卵巢的) fluid of a Chinook salmon,another kind of fish,before the donor cell is placed into the egg.The previous methods of cloning zebrafish had very low survival rates.With the new technique,the number of cloned fish is increased by 15 percent.
　　What makes zebrafish so useful in research is that their eggs are transparent(透明的),making the fish’s development easy to follow.
　　Improving zebrafish cloning techniques is also important because currently the mouse is the only good model for genetic research.
　　“So far the mouse is the only animal from which you can delete genes in a reliable way,”Cibelli says.“What researchers do is to mutate(使变异) a gene,destroy its function completely,and then study the consequence.”
　　1.What do we learn about zebrafish from the text?
　　A.They can be used to cure human diseases.
　　B.They have been used in genetic studies for 20 years.
　　C.They are the only vertebrates used in cloning.
　　D.Their survival rates are increased by the new method of cloning.
　　解析：推理判断题。根据第五段最后的“...the number of cloned fish is increased by 15 percent.”可以知道,这种新的克隆技术可以大大提高克隆斑马鱼的成活率;根据第四段的“For more than 20 years,zebrafish have also served as an excellent model for understanding both normal development and birth imperfections.”可知B项错误;根据第三段第一句可知C项错误;A项文中没有提及。
　　答案：D
　　2.Researchers choose zebrafish for genetic research because 　　　.
　　A.they have the same genes as human beings
　　B.they are a kind of vertebrate
　　C.their genes can be changed
　　D.their eggs are easy to observe
　　解析：细节理解题。根据第六段“What makes zebrafish so useful in research is that their eggs are transparent(透明的),making the fish’s development easy to follow.”可知人们之所以选择斑马鱼进行基因研究是因为它们的卵是透明的,利于观察。
　　答案：D
　　3.If 20 zebrafish could be cloned by the previous method,how many zebrafish can be cloned by the new one?
　　A.20.　　　　　　　　　B.23.
　　C.17. D.15.
　　解析：根据第五段的最后一句“With the new technique,the number o第三单元过关检测
　　(时间:90分钟　满分:120分)
　　Ⅰ.阅读理解(共12小题;每小题1.5分,满分30分)
　　阅读下列短文,从每题所给的四个选项(A、B、C、D)中选出最佳选项。
　　A
　　导学号53080036
　　It has happened to almost everyone.You’re sitting on a train or a bus,and someone right next to you is annoyingly shouting into his or her mobile phone.
　　But those days could soon be over due to “silent sounds”,a new technology shown at the CeBIT fair this week that transforms lip movements into a computer-generated voice for the listener at the other end of the phone.
　　The device,developed by the he Institute of Technology(ses electromyography(肌动电流描记术) to monitor the tiny muscle movements that occur when we speak and transform them into electrical pulses that can then be turned into speech,without a sound being uttered.
　　“We currently use electrodes(电极) glued to the skin.In the future,such electrodes might be included into cell phones,”says Michael Wand of the KIT.
　　The technology opens up a large number of applications,from helping people who have lost their voices due to illness or accidents to telling a trusted friend your PIN number over the phone without anyone eavesdropping(偷听)—assuming no lip-readers are around.
　　The technology can also turn you into an instant polyglot.Because the electrical pulses are universal,they can be immediately transformed into the language of the user’s choice.
　　“Native speakers can silently utter sentences in their own languages,and the receivers hear the sentences translated into their languages,”says Wand.
　　The translation technology works for languages like English,French and German,but for languages like Chinese,where different tones convey different meanings,may be a problem,he adds.
　　Noisy people in your office?Not any more.“We’re also working on technology to be used in an office environment,”the KIT scientist tells AFP.
　　The engineers have got the device working to 99 percent efficiency,which means the mechanical voice at the other end of the phone gets only one word in 100 wrong,explains Wand.
　　“We’re working to overcome the remaining technical difficulties.In five,maybe ten years,this will be a kind of useable and everyday technology,”he says.
　　1.According to the text,the new technology 　　　.
　　A.can imitate the human voice
　　B.can produce human muscle movements
　　C.can turn lip movements into a conversation
　　D.can change voices into electrical pulses
　　解析：细节理解题。根据第二段中的“...a new technology...that transforms lip movements into a computer-generated voice for the listener at the other end of the phone.”可知,这项新技术可以把唇部的运动转化成电脑发声,使对方能够听到。C项简略地概括了此意,故选C项。
　　答案：C
　　2.We can conclude from Paragraph 5 that the device 　　　.
　　A.will have a very large market
　　B.is of illegal use
　　C.is of little use
　　D.can help promote relationship
　　解析：推理判断题。根据第五段第一句话“The technology opens up a large number of applications,...”可推断出这个装置会有很大的市场。
　　答案：A
　　3.It can be inferred from the text that 　　　.
　　A.people can use the device to practise speaking
　　B.the device will soon work for Eastern languages such as Chinese
　　C.the device may help create a quieter office environment
　　D.the device already works without making mistakes
　　解析：推理判断题。根据倒数第三段的“Noisy people in your office?Not any more.”可知,这个装置有助于营造更安静的工作环境。
　　答案：C
　　4.The purpose of the text is to 　　　.
　　A.encourage better mobile-phone manners
　　B.show the technical difficulties involved in communications
　　C.promote a new mobile phone
　　D.introduce a new mobile phone technology
　　解析：主旨大意题。本文介绍了一种新的手机技术——“无声电话”。故选D项。
　　答案：D