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______ he has said sorry to you, please give him another chance. A.When B.Since C.Before D.Until
1年前
______ I studied harder, I could have passed examination. [ ]
1年前
一个多边形从一个顶点出发共引3条对角线,那么这个多边形对角线的总数为( ) A.5 B.37 C.8 D.9
1年前
噬菌体是一类侵染细菌、放线菌、真菌等微生物的病毒总称,而噬藻体是一类侵染蓝藻的病毒总称。下列叙述错误的是( )
1年前
The Changjiang River is _______ than the Yellow River. [ ]
1年前