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【单选题】
女生在使用头盔的时候,以下操作不当的是 :A.
摘掉发卡
B.
让头发自然垂放
C.
不能挡住眼睛
D.
是否收紧头围
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反馈参考答案：
举一反三
【单选题】Dorothy worked alongside him, in the beginning, unitil he proved himself; then gradually she relinquished more of the work to him and concentrated on her garden and flowers, and the housework.
A.
gave up
B.
offered
C.
took
D.
reconsidered
【简答题】紫外光分解法
【简答题】In Europe, people hold the fork in the left hand and the knife in the right throughout the meal, a system that is generally agreed to be more efficient than the American zigzag（曲折的）method. Americans h...
【简答题】A．In the 1920' s. B．In the 1930' s. C．In the 1940' s. D．In the 1950' s.
【简答题】The computers changed our lives in the 1980s, the Internet changed our lives in the 1990s, and the robots will change our lives in the new century. Do you think there will be robots in people’s homes?...
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