我们感冒时，常感到呼吸不畅，主要是因为 [ ] A．鼻粘膜分

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问题选择题

我们感冒时，常感到呼吸不畅，主要是因为 [ ]

A．鼻粘膜分泌物过多所致

B．鼻粘膜充血肿胀所致

C．气管、支气管分泌物增多所致

D．声带充血肿胀所致

答案

答案：B

选择题

Not only____ interested in football but ___ beginning to show an interest in it.[ ]

A. the father himself is; all his children are

B. the father himself is; are all his children

C. is the father himself; are all his children

D. is the father himself; all his children are

单项选择题

史书记载：“水激轮转，众筒兜一下，次第下倾于岸上……以灌稻田，日夜不息，绝胜人力。”这种提水工具最早出现于（）

A.汉代

B.曹魏

C.唐朝

D.北宋