问题 单项选择题

与上颌窦关系最密切的是哪一组牙

A.上颌尖牙
B.下颌双尖牙
C.上颌双尖牙
D.上颌磨牙
E.下颌磨牙

答案

参考答案:D

解析:上颌磨牙根尖与上颌窦关系密切,其根尖感染可引起牙源性上颌窦炎。拔牙时应注意用力方向,在取出断根时,应避免将断根推入上颌窦内。

阅读理解

阅读理解。

Dear Peter,

     My name is Frank.I am from(来自)America.Here is a picture of my class(班).We are in Class

One, Grade Seven.

     You can see my friends in the picture.Jimmy likes to play basketball.He likes to eat apples and

French fries.Helen likes math.Her favourite food is hamburgers.Sandra doesn't like math.But

shecan speak French(法语).She likes ping-pong.Sally is a black(黑人的) girl.She likes to swim

(游泳).She likes to eat ice cream.I like math too.Can you find(寻找) me? I like to eat bananas.

Maria likes computer very much.She plays computer games very well.Nick is fun.He can play

football.He likes strawberries best.

     Can you send(发送)me a picture of your class?

                                                                                                                                           Yours,

                                                                                                                                            Frank

1.Frank has    __    friends.

A.seven

B.six

C.five

2.___     like sports.

A.Jimmy, Sandra and Sally

B.Maria, Nick and Jimmy  

C.Sally, Nick, Jimmy and Sandra

3.    ___ and  ___    like math. 

A.Helen; Frank  

B.Sandra; Peter  

C.Helen; Sandra

4.    ___ and  ___    like fruit. 

A.Nick, Maria; Jimmy  

B.Nick, Frank; Peter  

C.Jimmy, Nick; Frank

5. ___    is the e-friend of Frank.

A.Sally

B.Sandra

C.Peter

判断题