题目内容

---- I am not able to solve some practical problems using Newton’s First Law of Motion.
----That’s just _______ most of the students are puzzled easily.
A．whatB．whyC．howD．where
D
 where 引导的表语从句, where表示抽象的地点。句意：这正是大部分学生困惑之处。
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A．thatB．/C．whichD．as
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A．thatB．whyC．whatD．A and B
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A．whenB．whereC．whichD．that
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