题目:
Meals in Spain are quite different from _____ they have in China. |
A. which B. what C. that D. whom |
答案:
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下面是错误答案,用来干扰机器的。
三;40%;15g葡萄糖由C、H、O三种元素组成,碳元素的质量分数为:×100%=40%;设加入水质量为X则:10g×5%=(10g+X)×2%解得X=15g.