The process of producing electricity may also give out CO2, you heat your house with electricity instead of charcoal.
A. as long as
B. as soon as
C. as if
D. even if
网友回答
A. as long as
B. as soon as
C. as if
(答案→)D. even if
解析：考查短语辨析。句意为：产生电的过程也会发出二氧化碳，即使你用电而不是用木炭加热你的屋子。故答案为D。