二尖瓣位于
A.左心房室口
B.右心房室口
C.肺动脉口
D.主动脉口
E.冠状动脉口
参考答案:A
Questions 1-4
What reason does the man give to deny the existence of a living monster in Loch Ness?()
A.No one has provided an accurate description of the animal.
B.No dead bodies of the animal have ever been found.
C.There are only 500 species living in Loch Ness.
D.The lake is not deep enough for such a huge animal.
下面不属于( )投资型金融机构。
A.投资基金
B.投资银行
C.财务公司
D.养老基金