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1、Unit 3答案Text A-When It Comes to Salt, No Rights or WrongsI. Reading comprehension 1-4DBAB 5-8DDCB注：第六小题D选项里cannot改为canII. Learning about wordsA. 1. menace 2. trade-off 3. shun 4. extrapolate 5. emulate 6. single out 7. paradox 8. gauge 9. masking 10. debacleB. 1-4 ABCB 5-8 ABACIII. Translation 1. 我个
2、人较为青睐答案E，低盐饮食将造就更为肥胖的美国人。但我的选择完全基于个人总结的规律：绝对不要怀疑美国人会变得越来越膀粗腰圆，尤其当他们听从公共卫生专家的建议时。 2. 以低盐饮食使得一些高血压患者血压降低为依据，他们进一步推测低盐饮食能够挽救成千上万人的生命 3. 低盐饮食的倡导者们驳斥上述推论，他们坚持在适当的引导下，人们可以既做到低盐饮食又不导致体重增加或其它健康问题。但是，即使人们真能改变习惯吃更少的盐，这对他们的健康一定会有所帮助吗？要知道，关于低盐饮食拯救生命的推断只不过是建立在假定的由较低血压带来的益处上。4. “当你降低食盐摄入量，”阿德曼博士说：“确实能降低血压，但也可能出现一
3、些负作用。随着临床试验数据的积累，低盐饮食的好处越来越不明显，但那些倡导者们对低盐运动似乎越来越充满自信。”5. 随着美国人食物消耗量的增加，他们会选择少吃含盐量较高的食物，以将总体食盐摄入量维持在某一稳定水平。同理，他推测，如果未来食品的平均含盐量降低，人们将通过寻求含盐量相对较高的食物来保持恒定的食盐摄入量。或者，他们将通过消耗更多的食物来摄入足够的盐分。IV. Paraphrasing1. When you dont know past trends, predicting the future is a wide-open game. If you can not research t
4、he history of peoples salt intake trends, then the forecast of its future development will only be a matter of opinion. 2. One prominent advocate of salt reduction, Dr. Lawrence Appel of Johns Hopkins University, said that inconsistent techniques in conducting the urinalysis surveys may be masking a
5、 real upward trend in salt consumption. One well-known advocate of low-salt campaign, J Dr. Lawrence Appel of Johns Hopkins University, people are making use of different testing methods and standards in urine analysis, which may cover up the actual increase in peoples salt intake. 3. That proposal
6、is rejected by the salt reformers as too time-consuming and expensive. But when you contemplate the potential costs of another public health debacle like the anti-fat campaign, a clinical trial can start to look cheap. This proposal was not adopted by the low-salt diet advocates, because such experi
7、ments require considerable investment of time and money. However, compared with the adverse/negative effects brought to people by the defeat of anti-fat movement, I am afraid the cost of clinical trials can not be considered high. 4. That fiasco hasnt dampened the reformers enthusiasm, to judge from
8、 the growing campaign to impose salt restrictions. The defeat has not destroyed the enthusiasm of the public-health reformers and now they are committed to promoting a low-salt diet campaign.V. Building your vocabulary A. hyper (over; above; more than normal)hypo (under; beneath; below; less than)A
9、knowledge of these prefixes will provide you with a key to the meaning of many unfamiliar words. Use the prefix hyper- or hypo- to complete each word so that it fits the definition. 1. hyperbole (an exaggeration)2. hypogeal (of things below the earths surface) 3. hyperborean (of a far northren regio
10、n)4. hypercritical (overly critical)5. hypocritical (pretending to be what one is not)6. hypertonic (able to hear very high tones)7. hypotonic (having abnormally low tone)8. hypodermic (injected under the skin)9. hypersensitive (excessively sensitive)B. An idiom is an accepted phrase or expression t
11、hat does not mean literally what it says. “He lost his head” does not mean that he misplaced his head. It means that he lost his self-control and became excited or flustered.The idioms in Column II are built on the word head. Find the idiom in Column II that best fits each meaning in Column I.I II1.
12、 not understandable a. turn ones head 42. far superior to b. keep ones head 53. understand c. make head or tail of 34. make one vain d. over ones head 1 5. remain calm e. take it into ones head 66. get a notion f. by a head 117. be proud g. hang ones head 108. keep oneself alive h. out of ones head
13、99. insane; raving i. hold ones head high 710. be ashamed j. head and shoulders above 211. by a small margin k. keep ones head above water 8Text B -Your Next ComputerI. Reading comprehension CDCA DABBII. Learning about wordsA. 1. ubiquity 2. proliferation 3. eclipse 4. sluggishly 5. serve up 6. dism
14、issively 7. outrage 8. prophecy 9. providing 10. zigzags B. 1-4 ABBC 5-8 ABAC III. Translation 1科技革命常以两种特色出现：或是惊人的速度，或是令人难以察觉的缓慢。迅速的一类，如各种数字式音乐播放器突然遍地开花，或是音乐共享网站大量出现，似乎都是转瞬间改变了文化的面貌。而那些缓慢发生的变化则往往持续数十年，以渐进、微妙的方式改变我们的生活和工作方式。2那些手机已经被淘汰，如今每年售出的数十亿手机小巧玲珑，色彩斑斓。手机的销售量远远大于电视，音响甚至大家所崇拜的个人电脑。目前，世界上有15亿部手机，是个
15、人电脑数量的三倍还多。现在手机已经成为我们生活的一部分，令人难以想象当年没有手机的时候日子是怎么过的。3在韩国，年轻人尤其钟爱手机，以至于最近在对小学生进行的一项调查中竟有一半的孩子说他们最想得到的礼物就是手机。相比之下，想要宠物的只有22%，而想要个人电脑的则不足10%。许多亚洲的手机制造商都认为下一样吸引这些孩子的产品其实已经有75年的历史了，那就是电视。4另一个难题在于，和因特网不同，移动电话领域里并不存在可供编程人员参考的开放和唯一的一套协议。为一种手机开发的软件无法在其他所有手机上运行。各自为政、非商业化的程序开发引发了因特网的快速演变，但在手机世界里，这并不适用。IV. Paraphrasing1. Change the way to ask/Another way to ask, that is, whether mobile phones will oversh
