问题 单项选择题 B1型题

食物碎屑易进入基托组织面()

A.卡环臂未进入倒凹区

B.基托与黏膜不密合

C.卡环过紧

D.牙合支托凹过深

E.有早接触

答案

参考答案:B

解析:1题基牙过敏选D,牙体预备造成牙本质过敏。2题食物碎屑易进入基托组织面,主要是由于基托与黏膜组织的不密合而引起,选B。3题食物嵌塞,主要是由于基托与黏膜组织的不密合而引起,选B。4题义齿松动,由于卡环不密合或未合理利用倒凹区,因而未能充分发挥卡环的环抱作用,可以调整卡环来改善固位;基牙固位形差,应增加或另行设计固位性强的同位体,故选A。

阅读理解

阅读理解。

                                              Welcome to my shop

     This is my shop. It's near a school. There're many things in it. All students like to buy things here. Look!

  Here are ten pencils. They are pink and blue. They are on sale. You can buy a pencil for only 0.4 yuan.

 Do you like flowers? Here are five red flowers on the desk. One flower is one yuan. Do you see seven

 keys on the chair? They are black and look very nice. You can open the pencil-boxes with them. It is two

  yuan. The pencil-boxes are on the desk, too. Every pencil-box is five yuan. If you are hungry or thirty,

 you can also come to my shop and enjoy yourself.

1. You can open the _____ with the keys.

    A. doors          

    B. windows        

    C. pencil-boxes    

    D. desks

2. What colour are the pencils?

    A. Pink and blue.    

    B. Pink and red.    

    C. Red and black.  

    D. Blue and black.

3. The word "on sale" means (意思是) _____ in Chinese?

    A. 展示          

    B. 出售          

    C. 表演          

    D. 拍卖

4. Lily has ten yuan, and she can buy five pencils, one pencil-box, _____  key(s) and one flower.

    A. one            

    B. two            

    C. three          

    D. four

5. What can't you do in the shop?

    A. buy some stationery                

    B. eat or drink something

    C. buy some  flowers                

    D. play with balls

单项选择题