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推荐文章：２００３年９月２０日大学英语四
推荐文章简介：
PartⅠ Listening Comprehension 1-----5 D A C B C 6----10 A B C B A 11---15 D C C D C 16---20 A D A D B PartⅡ Reading Comprehension 21---25 B C D D C 26---30 C B A A D 31---35 B B A D B 36---40 A B C
;range.
33.Many commercials begin with a cheerful song of some kind because ________ .
A) pop songs attract viewer attention.
B) it can increase their loudness.
C) advertisers want to make them sound different from regular programs.
D) advertisers want to merge music with commercials.
34.One of the reasons why commercials are ab
le to attract viewer attention is that ________ .
A) the human voices in commercials have more auditory impact.
B) people like cheerful songs that change dramatically in sound quality.
C) high-frequency sounds are used to mask sounds that drown out the primary message.
D) they possess sound qualities that make the viewer feel that something unusual is
happening.
35.In the passage, the author is trying to tell us ________ .
A) how TV ads vary vocal sounds to attract attention.
B) how the loudness of TV ads is overcome.
C) how advertisers control the sound properties of TV ads.
D) how the attention-getting properties of sounds are made use of in TV ads.
Questions 36 to 40 are based on the following passage
In the United States, the need to protect plant and animal species has become a highly controversial and sharply political issue since the passage of the Endangered Species Act in 1973. The act, designed to protect species’ living areas, and policies that preserve land and forests compete wit
h economic interests. In the 1990’s, for example, the woodcutters in the Western United States were challenged legally in their attempt to cut trees for timber in the Cascade Mountains. The challenge was mounted to protect the endangered spotted owl(猫头鹰), whose remaining population occupies these forests and requires the intact, ancient forest for survival. The problematic situation set the interests of environmentalists against those of corporations and of individuals who stood to lose jobs. After months of debate and legal battles, the fate of the woodcutters-and the owls-was still undecided in mid-1992.
Similar tensions exist between the developed and the developing nations. Many people in industrialized nations, for example, believe that developing nations in tropical regions should do more to protect their rain forests and other natural areas. But the developing countries may be impoverished (使穷困), with populations growing so rapidly that using the land is a means to temporarily avoid worsening poverty and starvation.
Many of the changes to Earth that concern scientists have the potential to rob the plan
et of its biological richness. The destruction of Earth’s ozone layer (臭氧层), for example, could contribute to the general process of impoverishment by allowing ultra-violet rays to harm plants and animals. And global warming could wipe out species unable to quickly adapt to changing climates. Clearly, protecting will come only through coordinated international efforts to control human population, stabilize the composition of the atmosphere, and preserve intact Earth’s complex web life.
36.Why does the author say that the protection of endangered species is a highly controversial
issue
A) Because people can’t agree as to what species to protect.
B) Because it is difficult to find an effective way to protect such species.
C) Because it affects the interests of certain groups of people.
D) Because it is a major problem involving a series of legal procedures.
37.According to the passage, the preservation of rain forests ________ .
A) may hamper a developing country in its fight against poverty.
B) benefits developed countries rather than developing countries. &n
bsp;
C) should take priority over the control of human population.
D) will help improve the living conditions in developing countries.
38.According to the passage, cutting tress to grow more food _______.
A) will widen the gap between the developed and the developing countries.
B) is but a short-term relief to the food problem.
C) can hardly alleviate the shortage of food.
D) proves to be an effective way out for impoverished nations.
39.Among“humanity’s current problems” (Line 6, Para. 3), the chief concern of the scientists
is _______ .
A) the impoverishment of developing countries.
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