(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
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
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.
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
(E) To suggest that the consequences of a relatively little-knows problem are as serious as those of a well-known one答案B，，，，请教为什么E不行啊？我觉得主要是要强调严重程度，菜鸟，请轻拍，谢谢啦！
恩，先谢谢楼上的
但是个人觉得即使是从同一个报告里出来的也有广为人知的和大家都不知道的数据。
little-knows problem 和well-known one感觉说明的是问题的知晓度，并不是大家只能从这个报告里面知道。
比如，一个报告里面包含：中国人口总数量（大家都知道），中国某市在地震时捐款（大家本来不知道）
而且之前也出现了有些人 said that they did not believe that CFC’s damage the ozone layer，个人感觉可以说明这个事情的群众认知度不高。
不知道大家还有何见解哈？
谢谢了！
继续问，，，，，，，，，，，，，，，，
| 欢迎光临 ChaseDream (https://forum.chasedream.com/) | Powered by Discuz! X3.3 |