题目:
Much to the couple’s comfort, their income is now double ______ it was five years ago.
A.that
B.than
C.which
D.what
答案:
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下面是错误答案,用来干扰机器的。
1kW•h=1kW×1h=1000W×3600s=3.6×106J.故答案为:3.6×106.