咳嗽伴杵状指常见于()
A.风湿性心脏病二尖瓣狭窄
B.风湿性心脏病主动脉瓣狭窄
C.冠状动脉粥样硬化性心脏病
D.右向左分流先天性心脏病
E.高血压性心脏病
参考答案:D
The human body is composed of organs, each ____ a definite job to do. [ ]
A. have
B. to have
C. has
D. having
《中国石拱桥》的作者是()。
A.竺可桢
B.周建人
C.茅以升
D.陆定一