问题 单项选择题

义齿修复时,最好的比色时间为

A.上午8~10时,下午3~5时
B.上午8~10时,下午1~4时
C.上午9~10时,下午2~4时
D.上午10~12时,下午2~4时
E.上午9~11时,下午1~4时

答案

参考答案:E

解析:比色在上午9时以后至11时,下午1时至4时为宜,以少云晴天自然光线由北向南采光较好。因早晚会有黄色光线、无云晴天含蓝色光线、正午含绿色光线干扰。

选择题
阅读理解

Your body, which has close relation with the food you eat, is the most important thing you own. So it needs proper treatment and proper nourishment(营养).

The old saying “An apple a day keeps the doctor away” is not silly as some people think. The body needs fruit and vegetables because they contain vitamin C Many people take extra vitamins in the form of pills(药丸), believing that these will make them healthy. But a good diet is made up of nourishing food and this gives all the vitamins you need. The body doesn’t need or use extra vitamins. So why waste money on them?

In the modern western world many people are too busy to care about eating properly. They throw anything into their stomachs, eating hurriedly and carelessly. The list of illness caused or made worse by bad eating habits is frightening.

小题1:The old saying in the passage tells us that_______.

A.the apple is the best among all kinds of fruits.

B.apple can take the place of doctors.

C.eating apples regularly (有规律的) does lots of good to our health.

D.an apple is a sure cure for illness.小题2:In the second paragraph the writer tries to let us know______.

A.our bodies need food or we can’t live.

B.often eating apples is a good habit.

C.taking extra vitamin pills is completely useless.

D.a good diet is very important to our health.小题3:From the passage we can draw a conclusion that if we want to keep healthy, we should______.

A.only eat an apple a day.

B.eat properly.

C.take as many vitamins pills as possible.

D.throw food into our stomachs slowly and carefully.