问题 单项选择题

患者,40岁。因上前牙折断,进行完善的根管治疗后进行桩冠修复,根管预备完毕,完成蜡型,至最后粘固前,患者的根管应处于封闭、消毒状态,根管内通常放何种棉球,以牙胶暂封()

A.95%酒精

B.生理盐水

C.干棉球

D.75%酒精

E.55%酒精

答案

参考答案:D

解析:基底桩蜡型完成后,应将根管壁仔细冲洗、消毒、除湿、吹干,封入75%酒精小棉球,以牙胶暂封,因此D正确。其他4个选项都不能作为根管暂封的药物,因此A、B、C、E错误。故应选D。

问答题
阅读理解

Do you want to be in good health? Try to do the following things! You can become strong.

Drink eight cups of water every day. Water helps your body in many ways. If you feel……,have a cup of water.

Don’t forget to eat your breakfast. Breakfast gives you everything your body needs for the morning. So do not forget your breakfast.

Calcium(钙). Your bones(骨头) need it. Milk has more calcium. You may also drink orange juice with calcium in it.

Go for a walk every day after meals. Walking is a good exercise, and people need exercise for good health, It’s better to walk after meals.

Stretch for five minutes after sitting for one or two hours. Stretching your arms and legs is good for your body.

Use your brain(大脑) every day. For example, you can do crossword puzzles or read a new book.

Have a rest about twenty minutes when you are tired. You may do something different to have a break. For example,get up and walk. Or sit down to listen to music.

小题1:How many things does this passage mention for you to do if you want to keep healthy?

A.Five

B.Six

C.Seven

D.Eight小题2:Which meal can provide(提供) what your body needs for the morning?

A.Breakfast

B.Lunch

C.Dessert

D.Dinner小题3:It’s better to take a walk after meals, isn’t it?

A.NO, it isn’t

B.Yes, it is

C.No, it doesn’t

D.Yes, it was小题4:What does the word “stretch” mean is Chinese?

A.锻炼

B.跳跃

C.跑步

D.伸展小题5:What is the best title (标题)of this passage?

A.It’s Important to Keep Healthy

B.Ways to Keep Healthy

C.Why People Do Exercise

D.Take Care of Yourself.