[单项选择]What happened to Mike A. His car was hit by another car. B. He was hurt while playing volleyball. C. He fell down the stairs. D. While crossing the street, he was hit by a car.
参考答案:A 答案解析:[听力原文] M: Did you hear Mike is in hospital with head injuries and a broken arm W: Yes, appare
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第1题: [单项选择]某建筑物楼面面积为100m2,铺设的木地板每平方米约3千克,其面层厚度约2cm,则该建筑物楼面增加的均布面荷载约为( )。 A. 3千克 B. 6千克 C. 100千克 D. 300千克 参考答案:B