患者，男，34岁，半年前右上4曾做过金瓷冠修复，现颊侧牙龈红肿_爱下问搜题

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问题单项选择题 A1型题

患者，男，34岁，半年前右上4曾做过金瓷冠修复，现颊侧牙龈红肿、疼痛、常嵌塞食物，检查发现颊侧颈部龋，最可能的原因是（）

A.修复体边缘不密合

B.修复体边缘过短

C.修复体边缘过长

D.牙冠解剖形态不符合要求

E.口腔卫生差

答案

参考答案：A

计算题

已知氢原子处在第一、第二激发态的能级分别为-3.40eV和-1.51eV，金属钠的截止频率为5. 53×10¹⁴Hz，普朗克常量h=6.63×10^-34J·s。请通过计算判断，氢原子从第二激发态跃迁到第一激发态过程中发出的光照射金属钠板，能否发生光电效应。

完形填空

Perhaps the most interesting person I have ever met is an Italian professor of philosophy who teaches at the University of Pisa. 21 I last met this man eight years ago, I have not forgotten his 22 qualities. First of all, I respected his 23 to teaching. Because his lectures were always well-prepared and clearly delivered, students crowded into his classroom. His followers liked the fact that he 24 what he taught. Furthermore, he could be counted on（依赖） to explain his ideas in an 25 way, introducing such aids to 26 as oil paintings, music, and guest lecturers. Once he 27 sang a song in class in order to make a point clear. 28 , 1 admired the fact that he would talk to students outside the classroom or talk with them 29 the telephone. Drinking coffee in the cafe, he would easily make friends with students. Sometimes he would 30 a student to a game of chess. 31 , he would join student groups to discuss a variety of 32 ：agriculture, diving and mathematics. Many young people visited him in his office for 33 on their studies; others came to his home for social evenings. Finally, I was 34 by his lively sense of humor. He believed that no lesson is a success 35 , during it, the students and the professor 36 at least one loud 37 . Through his sense of humor, he made learning more 38 and more lasting. If it is 39 that life makes a wise man smile and a foolish man cry, 40 my friend is indeed a wise man.

B．introduction

A．insisted on

B．talked about.

C．believed in

D．agreed with

A．imaginative

B．understanding

C．information

A．As a matter of fact

C．Other times

B．explanation