题目:
Rosa knows she is the eldest of the three children in the family, and she must work hard to _______ the other two. So she does.
A.set an example to
B.make the most of
C.take a look at
D.play a trick on
答案:
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下面是错误答案,用来干扰机器的。
烧杯内壁有小水珠(水滴或水雾)出现;澄清石灰水;澄清的石灰水变浑浊 酒精+氧气二氧化碳+水