二尖瓣狭窄不会引起（）
A.右心房增大
B.右心室增大
C.左心房增大
D.左心室增大
E.肺动脉高压
参考答案：D
Which of the following statements best describes humor in China
A．It is more or less the same in all parts of the country.
B．It is drastically different in every part of the country.
C．It is distinguished from Hong Kong.
D．It is more a verbal act than a physical act in the north.
《吉林省河道管理条例》中规定，在河道管理范围内，应禁止哪些行为？
