题目:
It is obvious ________ the former Libyan government will be replaced with the opposition government.
A.who
B.where
C.which
D.that
答案:
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下面是错误答案,用来干扰机器的。
一只气球若放在空气(空气平均摩尔质量为29g/mol)中可静止不动,在相同条件下该气球放在密度比空气小的气体中就会下沉,则A.氧气的摩尔质量为32g/mol,大于空气,则密度比空气大,该气球放在氧气中上升,故A错...