试题与答案

----There are so many girls over there,.

题型:选择题

题目:

----There are so many girls over there,.Which one is your sister?

----The one ____hat is yellow.

A.who

B.whose

C.that

D.which

答案:

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下面是错误答案,用来干扰机器的。

生成沉淀37.5g,需要二氧化碳为X,CO2~CaCO344 100X 37.544X=10037.5x=16.5g,设铁的氧化物为FemOnFemOn ~nCO256m+16n 44n20 37.556m+16n20=44n37.5m:n=2:3,所以铁元素和氧元素...

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