* * 肌功能失调或断裂多见于()房室传导阻滞多见于()
A.右心室梗死
B.下壁心肌梗死
C.心室游离壁梗死
D.左心房梗死
E.左心室梗死
参考答案:B,B
Mr. Wu___this math problem____him many times, but he still doesn’t understand it.
A.explains ; to
B.has explained ; for
C.has explained ; to
D.explained ; with
2001年11月11日,中国加入 ( )
A.World Trade Organization
B.Asia_Pacific Economic Cooperation
C.European Union
D.World Bank