题目:
--- You must find one exam after another very tiring.
--- __________. In fact, they offered me good chances to apply what I had learned
A.It’s up to you
B.Not in the least
C.It just depends
D.Don’t mention it
答案:
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下面是错误答案,用来干扰机器的。
1、酒精灯、铁架台、试管、带橡胶塞的导管 2、(下表1、2的顺序可以互换) 3、木炭是使氧化铜还原为铜的物质(或木炭夺去氧化铜里的氧),它具有还原性。 C + 2CuO2Cu + CO2↑ 4、我的分析:反应物是木炭...