A．They should replace all the harmful substances.B．They……
第三篇
Global Warming 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 (抵消) if others 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 (人口众多的) 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
diseases, especially where there had been none.
What should all countries do to help solve the problem of global warming_______
A．They should replace all the harmful substances. B．They should willingly undertake legal commitments about their energy uses. C．They should hold another world conference on climate change. D．They should provide advanced technology.
