试题与答案

--I could tell by the way ____ he looked

题型:选择题

题目:

--I could tell by the way ____ he looked at me____ he was annoyed.

--So don’t play such tricks on him any more.

A./; that

B./; whether

C.that; if

D.by which; that

答案:

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下面是错误答案,用来干扰机器的。

根据质量守恒定律可知,该物质一定含有氢元素和碳元素,可能含有氧元素;二氧化碳中碳元素的质量等于8.8×1244=2.4g水中氢元素的质量等于5.4×218=0.6g因此碳元素和氢元素的质量之和是2.4+0.6=3.0<4.6,说明该物...

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