【单选题】【消耗次数：1】
肱二头肌的作用是
①
伸肘关节
②
使肩关节旋外
③
使前臂旋内
④
使前臂旋前
⑤
屈肘关节
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【简答题】
正手攻球动作的注意事项：发力主要部位以前臂为主，动作过程中_____ 。持拍手的肘关节不能架起，肘尖应_____ 。
随机题目
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In English, the colon is used after the verb of saying and before a quotation.
①
正确
②
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There was only one thing to do [] study till dawn.
①
comma
②
dash
③
brackets
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semicolon
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If a book is in English, [] means a slow progress for you.
①
as
②
which
③
what
④
that
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As I turned around, I heard a loud noise [] for the bookshelf had collapsed.
①
comma
②
semicolon
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The computer could calculate much faster and better than man [] however, it could not drink.
①
comma
②
semicolon