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【单选题】
兄弟姐妹间引起器官移植排斥反应的物质属A.
自身抗原
B.
同种异型抗原
C.
异种抗原
D.
异嗜性抗原
E.
隐蔽抗原
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【简答题】A．She couldn't have left her notebook in the library. B．She may have put her notebook amid the journals. C．She should have made careful notes while doing reading. D．She shouldn't have read his notes w...
【简答题】He had learned Chinese _________ he came to China.
【多选题】丹霞地貌发育在红色砂砾岩地区，为红色砂砾岩在内外营力作用下发育而成的特殊地貌，属于此种地貌的景区有( )。
A.
浙江雁荡山
B.
福建武夷山
C.
广东金鸡岭
D.
云南路南石林
E.
安徽黄山
【单选题】-Why are you so late,Tom? -I was on half the way when it_________to me that I had left my notebook at home,so I had to fetch it. [ ]
A.
occurred
B.
hit
C.
happened
D.
reminded
【单选题】He had learned enough German to _____ a conversation. [ ]
A.
carry out with
B.
carry on
C.
continue on
D.
carry
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