[求助]OG-42-283

shaoheli

(The following is based on material written in 1996.)

The Montreal Protocol on Substances that Deplete the Ozone Layer, signed in 1987 by more than

150 nations, has attained its short-term goals: it has decreased the rate of increase in amounts of

most ozone-depleting chemicals reaching the atmosphere and has even reduced the atmospheric

levels of some of them. The projection that the ozone layer will substantially recover from ozone

depletion by 2050 is based on the assumption that the protocol’s regulations will be strictly

followed. Yet there is considerable evidence of violations, particularly in the form of the release of

ozone-depleting chlorofluorocarbons (CFC’s), which are commonly used in the refrigeration,

heating, and air conditioning industries. These violation reflect industry attitudes; for example, in

the United States, 48 percents of respondents in a recent survey of subscribers to Air Conditioning,

Heating, and Refrigeration News, and industry trade journal, said that they did not believe that

CFC’s damage the ozone layer. Moreover, some in the industry apparently do not want to pay for

CFC substitutes, which can run five times the cost of CFC’s. Consequently, a black market in

imported illicit CFC’s has grown. Estimates of the contraband CFC trade range from 10,000 to

22,000 tons a year, with most of the CFC’s originating in India and China, whose agreements

under the Protocol still allow them to produce CFC’s. In fact, the United States Customs Service

reports that CFC-12 is a contraband problem second only to illicit drugs.

283. According to the passage, which of the following best describes most ozone-depleting

chemicals in 1996 as compared to those in 1987?

(A)   The levels of such chemcials in the atmosphere had decreased.

(B)    The number of such chemcials that reached the atmosphere had declined.

(C)    The amounts of such chemcials released had increased but the amounts that reached the atmosphere had decreased.

(D)    The rate of increase in amounts of such chemicals reaching the atmosphere had decreased. (D)

(E)     The rate at which such chemicals were being reduced in the atmoshphere had slowed.

284. The author of the passage compares the smuggling of CFC’s to the illicit drug trade most

likely for which of the following reasons?

(A)   To qualify a previous claim

(B)    To emphasize the extent of a problem

(C)    To provide an explanation for an earlier assertion

(D)    To suggest that the illicit CFC trade, likely the illicit drug trade, will continue to increase (B)

(E)     To suggest that the consequences of a relatively little-knows problem are as serious as those of a well-known one

285. The passage suggests which of the following about the illicit trade in CFC’s?

(A)   It would cease if manufacturers in India and China stopped producing CFC’s.

(B)    Most people who participate in such trade do not believe that CFC’s deplete the ozone layer.

(C)    It will probably surpass illicit drugs as the largest contraband problem faced by the United States Custom Services.

(D)    It is fostered by people who do not want to pay the price of CFC substitutes. (D)

(E)     It has grown primarily because of the expansion of the refrigenration, heating, and air-conditioning industries in foreign countries.

我不能理解283A选项。我觉得A与绿字部分表表述的是同一个意思。has even reduced the atmospheric levels of some of them/ the levels of such chemicals in the atmosphere had decreased.

请赐教！非常感谢！

格瑞特艾力

it has decreased the rate of increase in amounts of

most ozone-depleting chemicals reaching the atmosphere and has even reduced the atmospheric

levels of some of them.

这句真的是很晕,虽然题做对了,这句句子还是搞不清,还请大N帮忙.

forgmat66

up

miaoli999

以下是引用格瑞特艾力在2005-10-7 19:54:00的发言：
it has decreased the rate of increase in amounts of

most ozone-depleting chemicals reaching the atmosphere and has even reduced the atmospheric

levels of some of them.

这句真的是很晕,虽然题做对了,这句句子还是搞不清,还请大N帮忙.

it has decreased the rate of increase in amounts of 。。。

rate在这里是指速度吧，协议降低了。。。的增长速度，（而不是减少了。。。的排放量。）对吗？

has even reduced the atmospheric levels of some of them.

该协议同时降低了大气中某些（some not most） ozone-depleting chemicals 的含量。

[此贴子已经被作者于2006-1-26 9:07:08编辑过]