The ________ fact is that some European countries are heavily in debt, ________China’s economy is generally in good shape.

A．simple, so

B．bare, nevertheless

C．obvious, because

D．clear, despite

中年以上男性持续或间断咯血痰或少量咯血，最大可能是（）

A.肺炎

B.肺脓肿

C.肺气肿

D.肺癌

E.肺栓塞