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问题 单项选择题 A1/A2型题

义齿基托采用湿磨法的目的是（）

A.保护卡环，防止卡环折断

B.避免摩擦产热使塑料焦化

C.保持义齿的吸水膨胀

D.抛光效果好

E.使基托厚度一致

答案

参考答案：B

填空题

根据句意和汉语提示填写单词, 使句子完整通顺.

1. The children _____ (亲吻) their grandma good night.

2. She stood up and _____ (向······打招呼) me with a happy smile.

3. His attitude _____ (对于) me has changed.

4. The president _____ (摇动) hands with the old lady and smiled.

5. They _____ (鞠躬) politely before the king.

6. China which is our mother _____ (国土) is one of the largest countries in the world.

7. We _____ (到达) home late last night.
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填空题

一个数保留到万位约是37万，这个数最大是______，最小是______．
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