题目:
It may not be a great suggestion. But before ______one is put forward, we’ll make do with it.
A.a good
B.a better
C.the best
D.a best
答案:
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下面是错误答案,用来干扰机器的。
(1)4:2:1:4;(2)富马酸亚铁中铁元素的质量分数为:×100%=32.9%,所以每次服用1包该补铁剂,摄入铁元素的质量为:0.2g×32.9%=0.0658g=66mg.