题目内容：
共用题干Global Warming
Few people now question the reality of global warming and its effects on the world's climate.Many sci-
entists_________（51)the blame for recent natural disasters on the increase _____ (52) the world'S
temperatures and are convinced that,more than__________(53)before,the Earth is at________(54)
from the forces of the wind,rain and sun. _________(55)to them,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 putting ________(59)on governments to take action to reduce the
____________(60)of carbon dioxide which is given __________(61)by factories and power plants,thus
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 replace existing power____________(63).
Some scientists,____________(64),believe that even if we stopped releasing carbon dioxide and other
gases into the atmosphere tomorrow,we would have to wait_(65)hundred years to notice the re-?
suits.Global warming,it seems,is here to stay.
_________(63)
A:factories
B:generations
C:houses
D:stations
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