某女27岁，龋坏，治疗后备牙取模做全冠修复。为增强冠的适合性，

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问题单项选择题共用题干题

某女27岁，龋坏，治疗后备牙取模做全冠修复。

为增强冠的适合性，提高修复体的质量，首先将工作模型制作成（）。

A.磷酸盐模型

B.琼脂模型

C.可卸代型模型

D.石英砂模型

E.氧化铝模型

答案

参考答案：C

填空题

阅读短文，用括号内所给词的正确形式填空。

Two men, Mr Smith and Mr Martin 1 _______ (be) both badly ill. They were in the same hospital room.

Mr Smith was able to 2 _______ (sit) up in his bed for an hour each afternoon. His bed was next to the only

window of the room. Mr Martin had to spend all his time 3 _______ (lie) on his back. The men talked for

hours without 4 _______ (stop). They spoke of their families, their times, their jobs... And every afternoon

when Mr Smith could sit up in his bed, he 5 _______ (will) pass the time by 6 _______ (talk )to his roommate

about all the things that he could see outside the window. Mr Martin believed that his world 7 _______ (make )

"larger" by the "colorful" outside world.

1._____ 2._____ 3._____ 4._____ 5._____ 6._____ 7._____

问答题简答题

微生物肥料（microbialmanure）作用原理