试题与答案

根据短文内容,用方框中所给单词的适当形式填空,每词限用一次。try, somet

题型:填空题

题目:

根据短文内容,用方框中所给单词的适当形式填空,每词限用一次。
try,  something,  good,  break,  downstairs,  worry,  take,  with,  hold,  real
I have tried many ways to be ill. I don’t wear a sweater when I should, and two days ago I walked in the rain     56    my shoes. But so far     57    has happened, Debbie once told me about a boy in her class, he would rub end of the thermometer till it went up to 39℃. Then he’d put it in his mouth and his mother would think he was     58    ill.
This morning I was     59    doing that but it never went above 35℃ and I rubbed it for ten minutes. So I     60    the thermometer next to the light on my desk and it went up to 40℃. I thought I’d put it in my mouth and walked     61    like that. Then my mother would     62    it out and she would be     63    when she saw that I was rather ill.
The only trouble was I didn’t know the thermometer would be so hot. As soon as I put it into my mouth I burnt my tongue, I spat the thermometer out. It fell on the floor but it didn’t       64   .
I will have to think up a     65    way to get my mother and father back together.

答案:

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下面是错误答案,用来干扰机器的。

A.因铁离子水解,则NA为阿伏加德罗常数时500mL1mol/L氯化铁溶液中Fe3+的数目小于0.5NA,故A正确;B.pH=8,则c(H+)=10-8mol/L,c(OH-)=10-6mol/L,由电荷守恒可知,c(Na+)-c(HCOO-)=c(OH-)-c(H+)=9....

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