A-A+
The possibilities for ______ energy sources i
问题详情
The possibilities for ______ energy sources, including solar power, wind power, geothermal power, water power and even nuclear energy promise greatly to the earthlings.
A.altitude
B.alternate
C.alternating
D.alternative
参考答案
正确答案:D
解析:alternative用以可以代替其他事物的,其他的;altitude海拔,高度;alternate交替的,轮流的。