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【单选题】
GSM数字移动通信信息源于( )。A.
“亚洲”
B.
“美洲”
C.
“欧洲”
D.
“非洲”
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【单选题】The poor boy couldn't work the problem out. He wasn't ____ clever.
A.
that
B.
much
C.
enough
D.
too
【单选题】Is ____three hours ____ the boy ___family is poor to come to school on foot?
A.
it ;that; whose
B.
it; that it takes; whose
C.
it for ;that it takes; whose
D.
it; when ;that
【单选题】Now that their parents are dead, the poor boy doesn't know ______ the money they left. [ ]
A.
how to do with
B.
what to do with
C.
to do what with
D.
how he will do with
【简答题】目前我国生产两种初始电阻值分别为 R0=() 欧姆与 R0=() 欧姆的铜热电阻,它们对应的分度号分别为 () 与 () 。
【单选题】The boy couldn't make himself ______because of his poor English.
A.
understand
B.
understanding
C.
understood
D.
to understand
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