answer for unit3

Unit 3 Understanding Science Vocabulary I. 1. be strong in mind and body have an easy mind

1) brief 2) in terms of 3) cut ... off 4) tend 5) anyway 6) precise 7) in the form of 8) initiative 9) convey 10) in two minds 11) concept 12) grasp

2. 1) Winning the match today has ensured their team a place in the Cup Final.

2) It is medical workers’ responsibility to heal the wounded and rescue the dying.

3) These computer games entertain as well as educate the learner.

4) No living thing can do without air and water.

5) The election is likely to be held in June. 3. 1) The film’s appeal lies in not only the entertainment it provides to the audience but also the questions it raises about the possible contact between human beings and alien civilizations.

2) The decision on the new project is made on the basis of scientific study. The project is likely to succeed despite the fact that we do not have sufficient funds at the moment.

3) True it is hard to make accurate predictions, but the steady growth of the information industry ensures that this line of products will be highly profitable.

II. Word Formation 1. regained 2. undecided 3. undersupplied 4. disabled 5. precondition 6. foresight 7. mispronounced 8. enrich III. Antonyms 1. good bad modern ancient rich poor forget remember dry wet go come agree differ young old attack defend simple difficult colored colorless like v. , n. dislike long short likely unlikely early late trust distrust

2. 1) majority 2) accepted 3) increased 4) weaknesses 5) local 6) late 7) wrong 8) false Comprehensive Exercises I. Cloze

1. Text-related (1) highly (2) bring…about (3) evident (4) rate (5) sufficient (6) put across (7) proportion (8) Hence (9) ensure 2. Theme-related (1) understand (2) travel (3) practical (4) use (5) Another (6) likely (7) affect (8) developments (9) supply (10) Somebody II. Translation 1. 1) As is predicted by scientists, global pollution has become one of the most serious problems humans are faced with.

2) Competition for these jobs is very tough/intense/fierce—we have five times as many applicants this year as we did last year/there are five times as many applicants this year as there were last year. 3) As the facts show, educational programs need to fit into the national plan for economic development.

4) The car burns too much gas, and moreover, the price is almost twice as much as I intended to pay.

5) To understand a great international event, we, first of all, need to consider the historical and political background to it.

2. It is hard to imagine how our forefathers could do without so many conveniences that modern technology has brought about. Back then only a small proportion of the population enjoyed some comforts. The majority didn’t even have sufficient food, not to speak of enjoying the privilege of being educated. However, many people blame modern technology for the problems it has created. They want to slow down the rate of progress. But no one can put the clock back.

as作关系代词 • as, which 指代整个句子或短语 • 此时它们的先行词并不是具体的某个词，而是整个句子或短语： • e.g.1: He was late for school，as/which was usual with him． • e.g.2: He was a foreigner，as/which I knew from his accent． • as 的特殊用法 • 如果要说明两者有相似之处时通常用as，表达“正如（情形或事实所表示）的那样、像……的一样”的意思。 • e.g.1:She is a fine singer，as her mother used to be． • e.g.2: She is the same age as you (are). • e.g.3: I hope to get such a dictionary as he is using. • as常与从句中的know，see， hear，expect等动词连用，也常用于as often happens，as is often the case（常有的事）等句子中。 • e.g.1: As you know, he is from Beijing. • e.g.2: He was absent，as is often the case． 英语倍数的表达法 • 用形容词表示甲是乙的几倍时，用下面三个句型 • （1）……倍数+形容词（或副词）的比较级+than • e.g.1: This rope is twice longer than that one． • e.g.2: This hall is five times bigger than our classroom． • （2）……倍数+as+形容词（或 much）或副词+as • e.g.1: Asia is four times as large as Europe． • e.g.2: This big stone is three times as heavy as that one． • （3）……倍数+the size（length，height…）of • e.g.1: This street is four times the length of that street． • e.g.2: This hill is four times the height of that small one． • e.g.3: The height of this hill is four times that of that small one． • 要用名词表示“量”的倍数时，则用以下两个句型： • （1）……倍数+more+名词（可数，不可数）+than • e.g.1: There are four times more books in our library than in yours． • e.g.2: We have produced twice more grain this year than we did last year． • （2）……倍数+as many（或much）+名词+其他+as… • e.g.1: After the technique was introduced，the factory produced twice as many tractors in 1988 as the year before． • e.g.2: There is three times as much water in this pot as in that one．