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问题 单项选择题

慢性肺源性心脏病急性加重期的治疗措施，下列哪项不是关键性的（）。

A.积极控制感染

B.通畅呼吸道

C.氧疗

D.利尿，强心

E.使用激素和细胞活性药物

答案

参考答案：E

选择题

It's so cold and you've walked a long way. You _______ be tired. Have a rest. please. [ ]

A. can't

B. might

C. must

D. can

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选择题
— Do you have to finish the work now?
— Yes, I do. ______ I'll fall behind others.

A. And
B. Or
C. But
D. So
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