题目

Among the brilliant athievements, a few records _______ because of the moving life stories behind them. A. let out   B. stand out   C. leave out   D. pull out 答案:B 解析: 略8.我们的抬腿、伸手等随意动作都包括:①骨骼肌收缩;②骨骼肌接受神经传来的刺激;③骨受到牵拉.这些步骤的顺序是(  )A.③①②B.②①③C.③②①D.①②③
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