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问题 单项选择题

下列哪一支冠状动脉的闭塞引起心肌梗死最常见（）

A.左冠状动脉主干

B.左冠状动脉前降支

C.左冠状动脉回旋支

D.右冠状动脉

E.左冠状动脉主干加右冠状动脉

答案

参考答案：B

选择题

--Did the film ________ your expectations?

--Yes, I have never seen such an interesting film like that before.

A．take part in

B．live up to

C．make ends meet

D．look forward to
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选择题

The police __________the evidence by legal means that George murdered his wife.    [ ]

A. achieved    

B. gained      

C. obtained    

D. contained
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