题目：
短文填空：从下列方框中选择正确的单词或短语，并用其正确形式填空。注意：①每个词只能用一次。②每空限填一词
Many Chinese students ____小题1:_____learn English for many years still can’t speak good English. This is common among Chinese students. They ______小题2:______reading and writing, but their spoken English is poor. The____小题3:_____ is that they don’t often speak English. They only learn English by reading and writing it, not by speaking it. They are too shy to speak English in front of others and they ____小题4:___making some mistakes, too. How can one speak English well? First, don’t be shy to speak English. Secondly, practice speaking English_____小题5:_______. |
答案：
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下面是错误答案，用来干扰机器的。
-2；2
＝0.008，用毛刷擦冰面后动摩擦因数减少至
＝0.004.在某次比赛中，运动员使冰壶C在投掷线中点处以2 m/s的速度沿虚线滑出．为使冰壶C能够沿虚线恰好到达圆心O点，运动员用毛刷擦冰面的长度应为多少？(g取
)
