题目内容:
Whydoesanastronautputhishandunderhisbeltwhenhesleeps? A.Becausehethinksitiscomfortabletosleepinthatwayinspace
B.Becausehedoesn'twanttotouchanycontrolswhenhesleeps
C.Becausetheinstrumentsofthespaceshipareeasilybroken
D.Becauseheisafraidthattheseatwillmove
参考答案:
答案解析: