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  3. At the Kyoto conference on global warming in December 1997, it became abundantly clear how complex it became to work out interna

At the Kyoto conference on global warming in December 1997, it became abundantly clear how complex it became to work out interna

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问题     At the Kyoto conference on global warming in December 1997, it became abundantly clear how complex it became to work out international agreements relating to environment because of economic concerns unique to each country. It is no longer enough to try to forbid certain activities or to reduce emissions of certain substances. The global challenges of the interlink between the environment and development increasingly bring us to the core of the economic life of states. During the late 1980s we were able, through international agreements, to make deep cuts in emissions harmful to the ozone layer. These reductions were made possible because substitution had been found for many of the harmful chemicals and, more important, because the harmful substances could be replaced without negative effects on employment and the economies of states.
    Although the threat of global warming has been known to the world for decades and all countries and leaders agree that we need to deal with the problem, we also know that the effects of measures, especially harsh measures taken in some countries, would be nullified(使无效)if other countries do not control their emissions. Whereas the UN team on climate change has found that the emissions of carbon dioxide would have to be cut globally by 60% to stabilize the content of carbon dioxide in the atmosphere, this path is not feasible for several reasons. Such deep cuts would cause a breakdown of the world economy. Important and populous low or medium-income countries are not yet willing to undertake legal commitments about their energy uses. In addition, the state of world technology would not yet permit us to make such a big leap.
    We must, however, find a solution to the threat of global warming early in the 21st century. Such a commitment would require a degree of shared vision and common responsibilities new to humanity. Success lies in the force of imaginations, in imagining what would happen if we fail to act. Although many living in cold regions would welcome the global warming effect of a warmer summer, few would cheer the arrival of the subsequent tropic diseases, especially where there had been none.
In the passage the author implies that______.
选项 A、it is always difficult to work out international agreements to cut down certain emissions
B、it is no longer easy to reach international agreements relating to the environment
C、the world has recently become aware of the threat of global warming
D、the problem of global warming has largely been solved
答案B
解析 推理判断题。第一段第一、四句指出，在20世纪80年代末通过国际协议减少危害臭氧层的物质的排放是可以做到的。第一段第一句指出，1997年12月在京都召开的关于全球变暖的会议上，制定一个有关环境的国际协议显得尤为复杂；现在要想达成这样的协议却非易事，故选B)。A)中的always指“一直”，这与第一段的意思不符；C)与第二段第一句中“全球变暖的威胁在过去的几十年里已为人所知”相矛盾；D)与文意不符，通篇文章所述事实都说明全球变暖问题尚未解决。
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