未来20年，（）将是我国需求增速最快的化石能源，根据IEA的预计年均增速约为6.4%。
A.石油
B.汽油
C.天然气
D.柴油
参考答案：C
It was from only a few supplies that she had bought in the village____ the hostess cooked
sucha nice dinner. [ ]
A. where
B. that
C. when
D. which
本厂使用的细碎机电压是（）V。
