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问题 单项选择题

可摘局部义齿模型设计的目的不是确定（）

A.基牙的分布

B.卡环的类型

C.义齿的就位道

D.义齿的支持类型

E.基托伸展的范围

答案

参考答案：D

解析：义齿的支持类型包括：牙支持式义齿、混合支持式义齿和黏膜支持式义齿，是由基牙、黏膜和牙槽嵴的情况决定的，与义齿模型设计无关。故答案为D。

填空题

Most people need eight hours' sleep every night. Scientists have found that people who sleep for less than six 小题1:            a half hours a night are more often ill than people who sleep for eight hours. People who sleep for less than five hours often die young, and do less well 小题2:            work. Sleep is really important to people's lives. Good 小题3:            needs good sleep.

"But not too much of it," says Professor Jim Home of Loughborough University. "Sleep is like 小题4:            and drink. You would always like to have a little bit more,  but that doesn't mean you need it." He found that people who sleep for more than 小题5:            hours a night die younger than people who usually sleep for seven or eight!
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单项选择题

与冠心病的发生危险性呈负相关的是（）

A.CM

B.LDL

C.HDL

D.VLDL

E.LPA.
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