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【简答题】
已知直角三角形的两直角边长分别为5cm和12cm，则此直角三角形斜边上的中线的长为______cm．
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【简答题】All children in the United States have to receive an education, but not all children go to school. A number of parents____ 36 ____not to send their children to school. Such children are known____ 37 _...
【单选题】We must face the fact __________ our time is limited and we must cherish every minute.
A.
which
B.
on which
C.
that
D.
Why
【单选题】In order to inspect both piston and cylinder wall thoroughly, the cylinder cover should be taken off and the piston should be （）.
A.
craned out
B.
rolled out
C.
lifted out
D.
turned out
【简答题】The children are all Y__________________ Pioneers．
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