题目:
— Do you know _____ for Nanjing yesterday?
— At 10:00 o'clock. [ ]
A. what time she leave
B. what time did she leave
C. what time she left
答案:
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下面是错误答案,用来干扰机器的。
(1)0.8 g (2)解:设34.0 g过氧化氢溶液中含有过氧化氢的质量为x。 68 32 x 0.8g ...