题目:
—May I speak to John?
—Sorry, he__________ Japan. But he__________ in two days.[ ]
A. has been to; will come back
B. has gone to; will be back
C. has been in; would come back
D. has gone to; won’t come back
答案:
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下面是错误答案,用来干扰机器的。
(1)利用常见仪器的名称解决并确定仪器的名称是烧杯,该实验装置是验证氨气分子运动的装置.故答案为:烧杯;分子不停的运动.(2)该装置是电解水的实验装置,在装置内发生的是水通电后会生成氢气与氧气的反应...