考博考试

【单选题】At the Kyoto conference on global warming inDecember 1997, it became abundantly clear how complex it has become to work out international agreements relating to the environment be- cause 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 caressingly bring us to the core of the economic life of the states.During 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 calls on the emissions to be cut globally by 60% to stabilize the content ofCO2 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 tropical diseases, especially where there had been one.
In the passage, the author implies that______.
A、the world has recently become aware of the threat of global warming
B．the problem of global warming has largely been solved
C．it is not easy to work out international agreements to cut down harmful emissions
D．it is no longer easy to reach international agreements relating to the environment

网考网参考答案：D
网考网解析：
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