Unit 4Global warming.doc

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1、Unit 4 Global warming 三、单元自测 1完形填空 阅读下面短文，掌握其大意，然后从2130各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。词数：161完成时间：15分钟难度：*Wouldnt it be great if we didnt have to remember passwords (密码) ever again? If we could just sit in front of our computers and be 21 logged in (登录)? Crave mentions how NEC Soft Biode Logon sys

2、tem uses face recognition technology to log you on to Windows, rather than using a 22 . All you need is a webcam and your pretty face to 23 your PC. No more 24 , confusing passwords to remember or change every few months. After doing a little research, I found this type of 25 already available to co

3、nsumers via a relatively 26 application called Face Code. The 27 requires the use of a webcam to recognize and log PC users into their systems. You can add as many 28 as you want, provided they each have a Windows account. If the system 29 to recognize your 30 , you can recall the Windows user name

4、and password by using a hot-key combination.21. A. automatically B. personally C. correctly D. occasionally22. A. face B. password C. software D. system23. A. access B. connect C. recognize D. remember24. A. simple B. complicated C. special D. useful25. A. computer B. technology C. password D. appli

5、cation26. A. independent B. infrequent C. inexpensive D. instant27. A. account B. consumer C. designer D. software28. A. users B. passwords C. systems D. computers29. A. begins B. tries C. fails D. stops30. A. account B. name C. password D. face答案解析21A 根据上下文可知，此处意思为：如果我们只需坐在电脑前而无需输入密码就可以自动登录该多好。A自动地

6、；B个人的；C正确的；D偶尔的，临时的。22B 由上文可知，因“用脸部识别技术来帮你登录”了，所以“不需要用密码”。23A 由上文可知此处所选词的意思相当于上文中的log in(登录)，故选A，存取(信息)，访问。24B 由文章开头第句话可知密码难记，同时根据本句中的并列词confusing(令人糊涂的，混乱的)可知答案为B(复杂的)。25B 根据上文中提到的uses face recognition technology可知。26C 本句话的意思为通过使用一种叫做FaceCode的相对便宜的应用程序，用户就可以使用这种技术了。根据本句中available to customers可以判断出此

7、处强调的是价格。application在本句中为应用程序,应用软件的意思。27D 根据上下文可知，此处所选的词意思相当于上句话中的application，故选D，程序系统，软件。28A 根据下句话中的they each have a Windows account可以判断出此处是指可以添加多个电脑用户。29C fail to ，在此表示 couldnt 的词义。30D 如果系统不能认出你的面孔，你还可以用热键组合来取回你的用户名和密码。2语法填空 语法填空（共10小题，每小题1.5分，满分15分）阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正

8、确形式填空，并将答案填写在答题卡标号为31-40的相应位置上。词数：209完成时间：8分钟难度：*Dear Sir Being completely deaf myself, I read your report of the poor conditions of the deaf and mute (哑)who were gathering in New York 31 (beg). I supposed that 32 could not happen here in Australia. 33 , two years later, I was having dinner in a res

9、taurant in Sydney 34 a person entered and started handing out plastic jewellery (首饰) and a note to people at each table. The main idea of the note was, I am unable to speak and 35 (hear) in a world of voices and music. 36 you kindly buy these things? When he came to my table, I questioned him 37 sig

10、n language. He was a little surprised. Then he said in a low voice dont talk (which I could read from his lip movement) and moved away. Please do not 38 ( take ) in by those people. Please do not give them any money. They are 39 deaf nor representative (代表) of the deaf. They make use of peoples pity

11、, and 40 they are doing will do harm to all that has been achieved by the deaf in the last 20 years-including putting this practice to an end. Truly yours, John Williams答案：31begging 32it 33However 34when 35hear 36Would 37in 38be taken39neither 40what 31begging，现在分词作伴随状语。 32it, 代词，代替前文提到的聋哑人聚在一起乞讨这回事

12、。 33However，表转折，“然而，可是”。 34when，考查be doing sth whenbe aboutto do sthwhen的结构，表“正在即将 去做突然就在那时”。 35hear，and连接两个动词不定式to speak和(to)hear。 36Would，Would you pleasekindly do sth? 表客气婉转的请求。 37in，介词，in sigh language 用手势语”，表方式： 38be taken，由该句中的by可知，此处考查动词的被动语态。 39neither, neithernor是固定结构，表“既不也不；两者都不” 40what，考查

13、由what引导的主语从句。3阅读理解阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。词数：343完成时间：6分钟难度：* These days, its easy to fly across oceans for vacation. Centuries ago, however, crossing the open seas required thorough and accurate planning, handmade boats, and courage. Scientists and historians have long been looking

14、 for clues to explain who crossed which oceans first. When it comes to the trip between Polynesia (玻利尼西亚中太平洋群岛) and South America, chickens may have been among the first ocean voyagers, according to new evidence. After studying an ancient chicken bone, anthropologists (人类学家) from the University of A

15、uckland in New Zealand now say that people and chickens traveled from Polynesia to what is now Chile (智利) by about 620 years ago. By then, the Inca people were already living in South America, but the Polynesians would have been the first to get there by sea. Previous theories claimed that European

16、explorers and their chickens sailed to South America first - but those voyagers didnt arrive until about a century later. In 2002, archaeologists dug up 50 chicken bones from a site in Chile called El Arenal. The team from New Zealand analyzed one to these bones. According to their calculations, the

17、 bone is about 650 years old. The researchers also compared the genetic material, or DNA, from the South American chicken bone with DNA from 11 chicken bones that had been found on the Polynesian islands of Tonga and American Samoa. These islands are 6,000 miles west of Chile. The bones found on the

18、 Polynesian islands are been 600 and 2,000 years old. Results of the comparisons showed that the chicken bones from both the Polynesian and South American sites had part of DNA in common. The researchers found the same part of DNA in feathers of two living chickens in Chile that belong to a modem br

19、eed that lays blue eggs. That DNA evidence suggests a close relationship among the chickens. However, the weight of scientific evidence is now behind the hypothesis (假设) that it was seafaring ( 航海) Polynesians who sailed from the islands to South America and returned, says archaeologist Patrick V. K

20、irch of the University of California, Berkeley.41. What is the passage mainly about? A. It was difficult for ancient people to travel between Polynesia and South America. B. The first people who lived in Chile and Polynesia. C. Valuable chicken bones have been found in Chile. D. Chickens - the first

21、 to travel between Polynesia and South America.42. When did the first European explorers reach South America? A. About 620 years ago. B. About 2.000 years ago. C. About 600 years ago. D. About 520 years ago.43. People found that chickens were among the first to travel from Polynesia to South America

22、 by _. A. comparing the colors of eggs laid by chickens from the two places B. comparing the DNA of chicken bones dug up on the Polynesian islands and that of the chicken bones from South America C. studying some previous theories D. asking the natives of South America44. What do we learn from the p

23、assage? A. European explorers and their chickens were the first to sail to South America. B. Chickens in South America have the same ancestors as those in Polynesia. C. In ancient times, a 6,000-mile channel separated Polynesia from South America. D. Before the Polynesians arrived in South America,

24、the Inca people had lived there. 45. Why was it difficult for people to travel across the oceans in ancient times, according to the passage? 1) It was difficult to take many chickens as food. 2) People had difficulty making careful and detailed sailing plans. 3) People lacked maps and the knowledge

25、of weather forecasting. 4) People had to make boats by hand. 5) It took great determination to cross an ocean. A. 1) 4) 5) B. 2) 3) 4) C. 2) 4) 5) D. 1) 2) 3) 答案： 现在飞越海洋是一件轻而易举的事情，然而几个世纪以前渡过海洋需要周密的计划、人造船只和勇气。是谁最先渡过了哪个海洋一直是科学家和历史学家研究的话题，最近研究结果发现鸡可能也是最早渡过玻利尼西亚和南美之间的海洋的。41. D。主旨大意题。本文在第一段点题，根据第一段第四句“Wh

26、en it comes to the trip between Polynesia and South America, chickens may have been among the first ocean voyagers, according to new evidence.”并根据后面科学家对在玻利尼西亚群岛和南美洲挖出的鸡骨进行DNA鉴定等，可知D选项正确。42. D。事实细节题。由文章第二段可知第一批从Polynesia到Chile的人是在大约620年前，而根据第二段最后一句可知，第一批欧洲人晚了大约一个世纪，因此他们是约在520年前到的南美洲的。43. B。事实细节题。由文章倒

27、数第三段“The researchers also compared the genetic material, or DNA, from the South American chicken bone with DNA from 11 chicken bones that had been found on the Polynesian islands of Tonga and American Samoa.”和倒数第二段可知科学家是通过对两地挖出的鸡骨进行DNA鉴定发现这个结果的。44. D。事实细节题。由第二段第二句“By then, the Inca people were alrea

28、dy living in South America .”可知the Inca people在玻利尼西亚人到达南美洲之前，已经在那里居住了。45. C。事实细节题。由第一段“Centuries ago, however, crossing the open seas required thorough and accurate planning, handmade boats, and courage.”可知，跨海之旅要有计划、有船，而且还需要勇气，所以答案选择C。4. 读写任务阅读下面的短文，然后按照要求写一篇150词左右的英语短文： I like water gymnastics best

29、 for many reasons. First of all, I am a good swimmer. Therefore, I am interested in all kinds of Olympic swimming sports. Especially, I am fond of water gymnastics for two major reasonsthe amazing movements and those sexy and those very beautiful women swimmers. Most importantly, I like the great mu

30、sic and their amazing performance in water ballet. When I watch this Olympic sport, I can learn their professional techniques in swimming. For example, swimmers performance is evaluated based on a series of predetermined elements. Arm sections and figures, similar to those of figure skating, are als

31、o required, and all elements must be presented in a specific order. Because synchronized (同步的) swimming routines require exceptional breath control, judges also take into consideration the ability of the swimmers to preserve the illusion (n.幻想) of effortlessness while holding their breath for up to

32、two minutes.写作内容 1以约30个词概括短文的要点。 2然后以120个词写一篇英语短文谈谈你喜欢的体育运动项目，并包括如下要点： 1)你喜欢哪一种体育运动项目。 2)说明你的理由。 3)该体育运动项目对你的日常生活造成的某些影响和感想。写作要求 1作文中可使用自己的亲身经历或虚构的故事，也可以参照阅读材料的内容但不得直接引用原文中的句子；标题自定。 2作文中不能出现真实姓名和学校名称。评分标准概括准确。语言规范，内容合适，篇章连贯。写作辅导 1写作有可能用到的主要短语和单词：羽毛球badminton，排球volleyball，足球football，体操 gymnastics，网球t

33、ennis，跳高high jumping，射击射箭5hooung，游泳swimming，棒球baseball，最喜欢的favourite，表演performance，对影响have an effect on sth/sb. 2本文的概要必须包含以下要点：I like water gymnastics best for many reasons. / Especially, I am fond of water gymnastics for two major reasons - the amazing movements and those sexy and those very beauti

34、ful women swimmers./ For example, swimmers performance is evaluated based on a series of predetermined elements. 3本文要注意，概要一定要根据文段的时态来写。同时，绝对不能抄袭原文的句子：文章中描述的是你喜欢哪一种体育运动项目和理由、感想等等，都属于评论性文字和结论性的观点，故多用一般现在时或一般将来时态：_答案: I Have Fallen in Deep Love with Football In the above passage, the writer tells us th

35、e reasons why he likes water gymnastics, such as the amazing movements and those sexy and those very beautiful women swimmers. Football is a very popular sport in the world and I think I have fallen in deep love with it, which makes me feel so crazy. I have spent lots of time doing many things relat

36、ed to football, like watching football matches, reading newspapers and magazines, searching the Web for more information about football, which certainly disturbs my normal study. I cant concentrate so much on my lessons, falling asleep in class the next day and not finishing nay homework on time tha

37、t I have almost lost interest in my studies. How should I deal with the contradiction between my studies and hobbies? Some helpful suggestions are needed. Meanwhile, I quite regret that I shouldnt have been addicted to football so much. Maybe, I xafill get out of the trouble with my efforts and fall in love with my study again.6用心 爱心 专心