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本课程起止时间为:2021-03-31到2021-06-30
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【作业】Unit 5 Silent Spring Ask and Answer

小提示:本节包含奇怪的同名章节内容

1、 问题: What do you know about environmental pollution?
评分规则: 【 Pollution refers primarily to the fouling of air, water, and land by wastes. Thus litter, billboards, and auto junkyards are said to constitute visual pollution; noise excessive enough to cause psychological or physical damage is considered noise pollution; and waste heat that alters local climate or affects fish populations in rivers is designated thermal pollution. The 20th century has seen pollution approach crisis proportions throughout the world.

2、 问题:What is the evil spell?
评分规则: 【 Spell is a bewitched state, a state completely captured by magic power. Mysterious diseases swept the flocks of chickens; cattle and sheep sickened and died; birds trembled and could not fly; fish died in the streams. People were infected with new diseases with several sudden and unexplained deaths. Vegetation withered and got browned. No life was on the road, in the stream; silence lay over the fields, the woods and marsh.

3、 问题:Why did Carson call man’s tampering with nature a war against nature?
评分规则: 【 A war involves the killing of hundreds of thousands of people—the “bad people or good people”—with their invented weapons. Insects, birds, plants, fish, even “pests” are all part of nature. By creating and using chemical “weapons”, man killed every insect the ”good” or “bad”, stilled the song of birds and the leaping of fish, coated the leaves with a deadly film, and ruined the soil. The whole ecology of nature was upset.

4、 问题:What is the difference between the natural spreading of species and the man-assisted process? And how does this process contribute to the pest problem?
评分规则: 【 The natural spreading of the species involves the restraining hand of natural enemies that keep down its numbers in its native land. An alien species is introduced by man into a new territory finds no natural enemies, thus becoming enormously abundant in number.

5、 问题:What should we do to solve pest problems?
评分规则: 【 We should try to have the basic knowledge of animal population and their relations to their surroundings to promote an even balance, control the power of outbreaks of insects and reduce new invasions rather than seeking new technology to suppress this plant or that animal.

Unit 5 Silent Spring Muitiple Choice

1、 问题: It was a tragic love story relating _ a young couple who rebelled _ the traditional arranged marriage.
选项:
A:A. to, against
B: B. to, at
C: C. with, against
D: D. with, to
答案: 【A. to, against

2、 问题:She is a college student now. It’s time that she __ her own private affaires.
选项:
A:A. manages
B: B. will manage
C: C. managed
D:D. must manage
答案: 【 C. managed

3、 问题:The President tried to __ the fact that his adviser had lied.
选项:
A:A. hush away
B: B. hush down
C: C. hush off
D: D. hush up
答案: 【 D. hush up

4、 问题:When I was there last year, the theatre __.
选项:
A:A. was building
B: B. was to build
C:C. was being built
D: D. has been built
答案: 【C. was being built

5、 问题:I won’t object to __ as an older sister.
选项:
A:A. be treated
B: B. treat
C: C. being treated
D: D. treating
答案: 【 C. being treated

Unit 5 Silent Spring Blank Filling

小提示:本节包含奇怪的同名章节内容

1、 问题:Scientists say that the collision of the earth with another star from the outer space would be a rare____.(occur)
答案: 【occurrence

2、 问题:She was still in critical condition, and the doctor said that she should remain under careful____.(observe)
答案: 【observation

3、 问题:The building is functional. There is nothing very ____ (decorate) in it.
答案: 【decorative

4、 问题:Those gentle rolling hills are a____ (delight) sight.
答案: 【delightful

5、 问题:His father is a highly respected professor who has won admiration for his____ (impress) academic achievement.
答案: 【impressive

6、 问题:I walked toward the only vacant seat in the restaurant, only be told____ (respect) “sorry, sir. That seat is already taken”.
答案: 【respectfully

7、 问题:One chapter of the book is devoted to the____ (history) meeting of the two leaders.
答案: 【historic

8、 问题:The future of our country rests with us young people. We must refuse to despair however____ (frustrate) the situation might be.
答案: 【frustrating

9、 问题: There is a more____ (economy) way of disposing of garbage.
答案: 【economical

10、 问题:___ (impulse) people always do things they will regret later.
答案: 【impusive

11、 问题: They have invited many international __ (observe) to see to it that their international election is properly handled.
答案: 【observers

12、 问题:About fifty thousand people applied for the job. The __ (apply) included many university postgraduate.
答案: 【applicants

13、 问题:The interior decoration of this hotel will be in __ (tradition) Chinese style.
答案: 【traditional

14、 问题:His father is a highly respected professor who has won admiration for his __ (impress) academic achievement.
答案: 【impressive

15、 问题:Both professors are highly __ (respect) in their field and it is no secret that they are emulating each other.
答案: 【respected

16、 问题: The __ (profession) historian is dimply one who brings together a very large number of “facts”
答案: 【professional

17、 问题:Great care is being taken to preserve these __ (history) buildings.
答案: 【historic

18、 问题:He bent down to study the footprints and then he __ (straight) up and looked around.
答案: 【straighten

19、 问题:If we can take that strategic position we will hold the enemy back. We can __ (neutral) them even if we can’t defeat them.
答案: 【neutralize

20、 问题:It takes an __ (invent) mind to create such a sophisticated system.
答案: 【inventive

【作业】Unit 8 Why Historians Disagree Ask and Answer

小提示:本节包含奇怪的同名章节内容

1、 问题:Why do you think historians disagree?
评分规则: 【 Because historians have different interests and a different understanding of human motivation and human behavior which in turn is due to their different background in age, sex, race, class, education, religion, politics, etc., they tend not only to be interested in different facts but also interpret the same facts differently.

2、 问题:What is the confusion of the students put forward in Paras.2-3?
评分规则: 【 1. Historians who are wrong may have their “facts” correct.2. Contending historians more or less agree on the same facts, but come to different conclusions.3. It seems that historical truth becomes a matter of personal preference.4. It’s hard to decide which of the two opposed points of view about an event is correct.

3、 问题:What is the main idea of Paras. 7—8? How are the two paragraphs developed?
评分规则: 【 Paras. 7—8 is about the factors for American entry into WWI.The two paragraphs are developed by way of exemplification.

4、 问题:How do the authors view the controversy among historians?
评分规则: 【 The controversy not only lies between historians, but also happens to the same historian with the discovery of new information and progress of the society. It is impossible to remove the controversy and it is the very existence of the controversy that lends excitement to the study of history.

5、 问题:How to achieve clarity in the expository writing?
评分规则: 【 1) Limit his subject or the scope of discussion, for it’s impossible to explain many things clearly in a short essay.2) Prepare enough material (details of examples) to help his explanation; the reader often finds abstract discussions hard to follow if they are not illustrated by concrete examples. 3) Present facts and views in proper order, in the order of time or of logical sequence depending on the nature of the subjects. 4) Make exposition, if possible, interesting or moving.

Unit 8 Why Historians Disagree Muitiple Choice

1、 问题:When you get _ with this course, you won’t have much difficulty getting _ simple ideas in English.
选项:
A:A. over, through
B:B. through, across
C:C. on, across
D:D. away, over
答案: 【B. through, across

2、 问题:My father is not at home now. He, together with some of his friends, __ to Washington.
选项:
A:A. has been
B:B. have been
C: C. have gone
D: D. has gone
答案: 【 D. has gone

3、 问题: Never_ this before, and never _.
选项:
A:A. have I done, I will
B:B. have I done, will I
C:C. I have done, I will
D:D. I have done, will I
答案: 【B. have I done, will I

4、 问题: The airline hostess reminded the passengers not to _ their luggage _ when they alight from a plane.
选项:
A:A. leave…behind
B:B. leave… away
C:C. throw… away
D:D. forget… behind
答案: 【A. leave…behind

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