问题 问答题 简答题

什么是缓释制剂和控释制剂?两者有何区别?

答案

参考答案:缓释制剂系指用药后能在较长时间内持续释放药物以达到延长药效目的的制剂。控释制剂系指药物能在设定的时间内自动地以设定速度释放的制剂。

两者区别是:缓释制剂是在规定介质中,要求缓慢地非恒速释放药物,药物释放主要是一级速度过程。控释制剂是在规定介质中,要求缓慢恒速或接近恒速释放药物,药物释放主要是按零级或接近零级速率规律释放,可得更平稳的血药浓度。

阅读理解

阅读理解。

    Maybe you are an average (一般的) student. You probably think you will never be a top student. However,

anyone can become better if he or she does his or her best. Here are some tips to help you.

    ★ Plan your time carefully. You should plan your time for things such as eating, sleeping and dressing.

Then make a good, regular time for studying. But don't forget to set enough time for entertainment.

    ★ Keep your study quiet and clean. The study should have a desk, a chair and some study materials, but

no games, no radio and no television! When you sit down to study, you can put your heart into it. Make good

use of your time.

    ★ Listen to everything that the teacher says. Listening carefully in class means less work later. Taking

notes will help you remember what the teacher says.

    ★ After you get home from school, go over your notes. Review the important points. If you know what

your teacher is going to discuss next day, read the material. It will help you study better.

    ★ Develop a good attitude to tests. The purpose of a test is to show what you have learned about a subject.

It helps you know what you are not good at. The world will still go on even if you fail in a test, so don't be

too worried.

1. How many tips are mentioned in the passage? [ ]

A. Three.

B. Four.

C. Five.

D. Six.

2. What does the underlined word "study" mean in Chinese? [ ]

A. 学习

B. 研究

C. 书房

D. 教室

3. Which is a good place for studying? [ ]

A. A clean and beautiful place.

B. The place with a computer.

C. The place with a television and a radio.

D. A quiet place with a chair, a desk and some study materials.

4. Which of the following is NOT true?[ ]

A. The purpose of a test is to show what you are good at.

B. After class, you should review what you have learned.

C. You should listen to your teacher and take notes carefully in class.

D. When you plan your time, you should think of the time for eating, sleeping and so on.

5. What's the passage mainly about? [ ]

A. How to become a better student.

B. How to plan your time.

C. How to study English.

D. How to take notes.

单项选择题