题目内容：
回答题Global Warming
Few people now question the reality of global warming and its effects on the world's climate. Many scientists put the ___________(51) for recent natural disasters on the increase ___________(52) the world's temperatures and are convinced ___________(53) , more than ever before, the Earth is at ___________(54) from the forces of the wind, rain and sun. According to ___________(55) , global warming is making extreme weather events, ___________(56) as hurricanes and droughts, even more ___________(57) and causing sea levels all around the world to ___________(58) .
Environmental groups are ___________(59) pressure on governments to take action to reduce the ___________(60) of carbon dioxide which is given off by factories and power plants, ___________(61) attacking the problem at its source. They are in ___________(62) of more money being spent on research into solar, wind and wave energy devices, which could then ___________(63) existing power stations.
Some scientists, ___________(64) believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere tomorrow. We would have to wait several hundred years to ___________(65) the results. Global warming, it seems, is here to stay.
请在第___________处填上正确答案． A．position
B．practice
C．blame
D．question
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