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

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

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问题     At the Kyoto conference on global warming in December 1997, it became abundantly clear how complex it has become to work out international agreements relating to the 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 substitutions 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 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 CO2 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 lower 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 tropical diseases, especially where there had been none.
The reason why it is difficult to get rid of the threat of global warming is that______.
选项 A、the leaders of many countries are not fully aware of the gravity of the problem
B、world technology is not able to solve the problem
C、not all the countries are willing to make deep cuts in emissions
D、many people welcome the global-warming effect of a warmer summer
答案C
解析 本题是一道具体细节题。问消除全球变暖的威胁是一个难题的原因是什么。文章第三段指出，虽然联合国气候变化研究小组发现：要稳定大气层里的二氧化碳含量，全球范围内的二氧化碳排放量必须减少60%，但是，这种做法是不现实的，其中包括多个理由：(1)如此大幅度的减少会引起世界经济的崩溃；(2)某些人口众多的中低收入大国还不愿就自己的能源消耗承担法律上的义务；(3)国际技术水平还不容许我们迈出如此大的步子。从第二个理由来看，本题的正确答案应是C“并非所有的国家都愿意大幅度地减少有害物质的排放量”。
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