题目内容
（请给出正确答案）
[主观题]
Alternative sources of energy ______.A．could not possibly reduce the installed capacity of
Alternative sources of energy ______.
A．could not possibly reduce the installed capacity of conventional power stations
B．might not reduce the installed capacity of conventional power stations
C．would automatically reduce the installed capacity of conventional power stations
D．would make it necessary to reduce the installed capacity of conventional power stations
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