问题 单项选择题

塑料全冠修复时牙颈部制成肩台是为了()

A.有利于美观

B.有利于边缘密合

C.有利于保护牙髓

D.有利于抗力

E.有利于同位

答案

参考答案:D

解析:塑料全冠修复时牙颈部制成肩台是为了有利于抗力,塑料牙不易脱落,有韧性,不易折断,可任意磨改,以适应不同缺损。但硬度较差,易磨损,不够致密,故磨光不够高,易污染变色咀嚼效能也较差。故选D。

阅读理解

阅读表达。

    Happiness is for everyone. (A) You don't always need to care about the rich. Though they have beautiful

houses with large gardens and swimming pools, they may often feel lonely In fact, happiness is always

around you if you put your heart into it. (B) When you don't pass the exam at school, your teachers will give

you a hand.

    When you do something wrong, people around you will feel unhappy. When you succeed in something,

your friends will say (C) congratulations to you. All of these are your happiness. If you notice (D)some of

these things, you can see happiness is always around you.

    Happiness is not the same as money.It is a feeling of your heart. (E) 虽然你贫穷,但你也可以说你很幸福。Money is not everything. You have something else that money can't buy. When you meet difficulties,

you can loudly say you are very happy because you have more chances to challenge yourself so you can not

always say you are poor and you have bad luck If you take every chance you get, you can be a happy and

lucky person.

阅读上面的短文,按要求答题。

1. 将划线部分(A)处翻译成汉语。

    ______________________________________________________________

2. 将划线部分(B)处改为同义句。

    ______________________________________________________________

3. 划线部分(C)处的中文意思是______________

A.“加油” B.“祝贺” C.“倒霉” D.“太棒了”

4. 与划线部分(D)处意思相同的词语是_______________

    A.many of  B.one of  C.a few of  D.any of

5. 将划线部分(E)处的汉语翻译成英语。

    ______________________________________________________________

判断题