题目:
—Did you watch the basketball match yesterday?
—Yes. You know, Jeremy Shu-How Lin, who is one of my heroes, ________ in the match.
A.is playing
B.has played
C.was playing
D.had played
答案:
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答案:A题目分析:根据溶质质量分数计算方法可知:溶质质量分数偏大的原因是盐多或水少。A.用量筒取水时俯视读数,会造成实际量得的水的体积比正常情况下的少,符合要求。B.用托盘天平称取食盐时,将食盐放在右...