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问题
名词解释
颐
答案
参考答案:位于颏(音孩)部的外上方,口角的外下方,腮部下方的部位。
选择题
His grandfather was among the first to settle in _____ is now a famous holiday center.
A. what
B. which
C. where
D. that
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填空题
如图所示的两种剪刀,属于省力杠杆的是______图.根据功的原理,使用这两种剪刀都不省______.
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