颌间结扎的患者用吸管进流食，流食主要经何种途径自口腔前庭进入

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问题单项选择题 A2型题

颌间结扎的患者用吸管进流食，流食主要经何种途径自口腔前庭进入固有口腔（）

A.间隙

B.牙间隙

C.舌下间隙

D.翼下颌皱襞与最后磨牙之间的间隙

E.A+B

答案

参考答案：D

句型转换

句型转换。

1. Climbing is not so dangerous as diving. (保持句意基本不变)

Diving is _____________ dangerous _______________ climbing.

2. Millie's shoes are not the same as Tina's. (保持句意基本不变)

Millie's shoes are ____________ ____________ Tina's.

3. David is polite and helpful.(就划线部分提问)

_____________ is David ____________?

4. We can go to the Summer Palace by bus. (保持句意基本不变)

We can ____________ a ___________ to the Summer Palace.

5. They did their homework last night. (改为否定句)

They ____________ ____________ their homework last night.

填空题

标准物质贮存应防止氧化、（）和（）。