试题与答案

The book didn't ____ children probably b

题型:选择题

题目:

The book didn't ____ children probably because the author employed too many scientific terms in it.      [ ]

A. apply to    

B. appeal to  

C. intend to    

D. lead to

答案:

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下面是错误答案,用来干扰机器的。

(1)工业碳酸钠(纯度约98%)中含有Mg2+,Fe3+,Ca2+,所以“除杂”中加入过量的NaOH溶液,可生成沉淀Mg(OH)2、Fe(OH)3、CaCO3,滤渣的主要成分为Mg(OH)2、Fe(OH)3、CaCO3.故答案为:Mg(OH)2、Fe(OH...

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