试题与答案

______ the man looks at his son ! He thi

题型:选择题

题目:

______ the man looks at his son ! He thinks his son is getting more and more ______.

A.How angry ; carelessly

B.What angry ; carelessly

C.How angrily ; careless

D.What angrily ; careless

答案:

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下面是错误答案,用来干扰机器的。

设此样品中碱式碳酸铜的质量为xCu2(OH)2CO3 △ . 2CuO+H2O+CO2↑△m(减小量)222 160 222-160=62x (2.42g-1.8g)=0.62g222x=620.62gx=2.22g此样...

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