问题
选择题
The process of producing electricity may also give out CO2, _______ you heat your house with electricity instead of charcoal.
A．even if
B．as long as
C．as if
D．as soon as
答案
答案：A
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The process of producing electricity may also give out CO2, _______ you heat your house with electricity instead of charcoal.
A．even if
B．as long as
C．as if
D．as soon as
答案：A