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【单选题】
多模光纤收发器一般的传输距离在（）公里之间。A.
2-3
B.
2-4
C.
2-5
D.
2-6
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皮皮学刷刷变学霸
举一反三
【单选题】Many Ph．D.s are out of job because______．
A.
they are improperly educated
B.
they are of little commercial value to their society
C.
there are fewer jobs in high schools
D.
they prefer easier jobs that make more money
【单选题】We would recommend you ____ this offer.
A.
accept
B.
accepted
C.
to accept
D.
accepting
【简答题】阅读理解。 Children, especially boys, tend to idealize their fathers when they are young. Every little boy wants to grow up to be just like his father, and every little girl thinks her father is the smarte...
【单选题】If the earth suddenly ____ spinning, we would all fly off it.
A.
had stopped
B.
stopped
C.
has stopped
D.
would stop
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