导致Austin-F1int杂音的情况是（） A.主动脉瓣关闭不全 B.器质性二尖瓣

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问题单项选择题 A1/A2型题

导致Austin-F1int杂音的情况是（）

A.主动脉瓣关闭不全

B.器质性二尖瓣狭窄

C.主动脉瓣狭窄

D.二尖瓣关闭不全

E.动脉导管未闭

答案

参考答案：A

填空题

用所给词的适当形式填空。

1. Jenny is _____________ (sit) under the tree.

2. What a cold, _____________ (rain) day!

3. Can you teach me _____________ (skate), Li Fang?

4. Danny is tired. he walks _____________ (slow).

5. In fall, it's windy. I like watching falling _____________ (leaf).

名词解释

舍去，辄愈。（舍去）舍