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【单选题】
During all these years of absence, he had ______ a tender feeling for his mother and the family.A.
enclosed
B.
hugged
C.
enriched
D.
cherished
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【单选题】What is Skeptical observers' opinion on ancestry testing?
A.
It fails to trace distant ancestors.
B.
It rebuilds reliable bloodlines.
C.
It contains fully genetic information.
D.
It fails to achieve the claimed accuracy.
【简答题】假定在使用CSMA/CD协议的10Mb/s以太网中某个站在发送数据时检测到碰撞,执行退避算法时选择了随机数r=100。试问这个站需要等待多长时间后才能再次发送数据?
【多选题】全口义齿的选磨,哪些做法是正确的( )
A.
允许适量降低义齿高度
B.
不允许降低义齿高度
C.
可在椅旁进行
D.
可在义齿作好后，重上he架上进行
E.
只应对上下颌义齿中选其一方作调磨
【简答题】The greatest achievement of humankind in its long evolution from ancient hominoid ancestors to its present status is the acquisition and accumulation of a vast body of knowledge about itself, the worl...
【简答题】什么是金属与金属材料?
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