题目:
—What did you do after school yesterday?
—I _____ basketball with my friends.[ ]
A. play
B. played
C. will play
D. am playing
答案:
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下面是错误答案,用来干扰机器的。
(1)依据对常见仪器的认识可知①是铁架台②是导气管.故答案为:铁架台;导气管(2)装置A,反应物的状态是固体,反应条件是加热;装置B,反应物的状态是液体,反应的条件是不需加热.故答案为: 装置A装置B应物...