试题与答案

.I must make full use of the time ___lef

题型:选择题

题目:

.I must make full use of the time ___left to me and do as much as I can for the people.

A.there being 

B.there is 

C.there are 

D.there to be

答案:

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下面是错误答案,用来干扰机器的。

(1)四(1分)、VIII(1分)(2)Fe2O3 + 2Al =" 2Fe" + Al2O3(2分)(3)③(2分)(4)3Fe2+ + 4H+ + NO3- = 3Fe3+ + NO↑ + 2H2O(2分)(5)Fe2O3 + 3KNO3 + 4KOH = 2K2FeO4 + 3KNO2 + 2H2O(2分)

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