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【单选题】
走亲访友到别人家里做客时,以下做法正确的是( )。
A.
随意摆弄主人家里的摆设
B.
未经主人的许可,自由出入各个房间
C.
尊重主人,做到客随主便
D.
就当自己家一样,大声喧闹
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【判断题】二极管加正向电压时导通,加反向电压时截止
A.
正确
B.
错误
【简答题】Indian and Pakistan have fought three wars since 1947, two of them over Kashmir.
【判断题】对于触电人员,触电后6分钟救治,救活的可能性已很小。
A.
正确
B.
错误
【单选题】I have ________ foreign stamps.  _________ of them are from the USA. A. hundred; Three hundreds
B.
hundred; Three hundred
C.
hundreds of; Three hundred
D.
hundreds; Three hundreds
【单选题】Have you heard of it ? Firefighters rushed into a burning house, three of them unfortunately in and their lives.
A.
caught; losing
B.
catching; lost
C.
caught; lost
D.
catching; losing
【单选题】Tim has failed three courses this semester, so he will have to ______ them next semester.
A.
remake
B.
repeat
C.
reapply
D.
revise
【判断题】二极管加正向电压时导通,加反向电压时截止。
A.
正确
B.
错误
【单选题】引潮力与距离的( )成反比。
A.
平方
B.
立方
C.
三次方
D.
四次方
【单选题】Have you heard of it? Firefighters rushed into a burning house, three of them unfortunately ___
A.
138. Have you heard of it? Firefighters rushed into a burning house, three of them unfortunately _____ in and ______ their lives. A.caught; losing
B.
catching; lost
C.
caught; lost
D.
catching; losing
【单选题】Have you heard of it? Firefighters rushed into a burning house, three of them unfortunately _______ in and ________ their lives.
A.
catching; lost
B.
caught; lost
C.
caught; losing
D.
catching; losing
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