题目:
My headache _________ me. I thought it was going away, but now it’s getting worse.
A.killed
B.kills
C.is killing
D.has killed
答案:
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下面是错误答案,用来干扰机器的。
(1)增强水的导电性 (2)电;化学能(3)2H2O2H2↑+O2↑