问题 单项选择题

对松脂醇的描述正确的是()

A.松脂醇是一种组织固定剂;可替代甲醛

B.松脂醇属于化学染料,主要用于细胞特殊染色

C.松脂醇主要使细胞核着色

D.松脂醇主要使细胞质着色

E.松脂醇可取代无水乙醇用作脱水剂和随后的浸透和包埋

答案

参考答案:E

阅读理解

阅读理解。

     Modern work and life bring anxieties (焦虑). Sometimes even little things make us upset. How can we

deal with all of the worries and relax? Here are some tips.

     1. Take pictures every day

     Taking pictures to record your daily life is a good way to make you feel happy. According to scientists,

the pictures can remind you of those happy memories.

     2. Cry

     Some people hide their emotions when they feel sad. Crying many times can make you feel better.

     3. Rest on weekends

     Weekends are a time for rest, but some people, especially women, spend whole weekends doing housework.

It makes them feel more tired. After working for a week, weekends are the best time for relaxation. A relaxing

weekend can make you feel much better.

     4. Take part in more activities

     Having a party is a great way to relax. Going out with your friends for a picnic will be fun, and you won't

feel lonely.

     5. Going for a swim or a run

     Swimming or running during the day can make you feel better, help you forget everything temporarily, and

help you sleep better

     6. Sing while taking a shower

     Some people like to sing while taking a shower. They don't care how good their singing is. It's just a way to

relax. Have a try. You are the only listener.

1. What is the passage mainly about?

A. Life in modern society.

B. How to work well.

C. How to relax and live happily.

D. How to deal with small things.

2. What can help people sleep better according to the passage?

A. Running.

B. Taking pictures.

C. Crying.

D. Singing.

3. Which of the following is TRUE?

A. We should do housework on weekends.

B. Crying often is bad for our health.

C. Singing is one way for some people to relax.

D. We should swim or run for a long time every day.

4. The underlined word "temporarily" means "______" in Chinese.

A. 永远地

B. 坚决地

C. 暂时地

D. 幸运地

填空题