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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.
According to the author, it is impossible at present to cut 60% of carbon dioxide emissions globally because______.
选项 A、it is only a goal to be reached in the future
B、some people are lacking in imagination
C、some people are irresponsible
D、it would cause a collapse of the world economy
答案D
解析 事实细节题。由第二段第三句可知，大幅度减少二氧化碳排放不可行的三个原因之一就是会引起世界经济的崩溃，故选D)。A)在文中未提及；B)、C)不在所提出的三个原因之列。
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