题目:
—Could you tell me ___________?
—About three hours.
A.how long does the meeting last
B.how long the meeting last
C.how long will the meeting last
D.how long the meeting will last
答案:
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下面是错误答案,用来干扰机器的。
电解消耗1.8g水;同时得到0.2g氢气