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Laboratory work is your chance to learn ...

Laboratory work is your chance to learn science firstly. It can be fun, but you must be careful to avoid hurting.Listen closely when your teacher reads and explains the rules before your first lab lesson.

LABORATORY  RULES

Throughout the lesson

 

*Do not enter the science lab without the teacher’s agreement. Do not bring food or drinks into the science lab.

Before the experiment

Read all instructions carefully before every experiment.

Prepare all instruments and put them in order so that you will not knock them over while doing the experiment.

During the experiment

If you are unsure of how to use any instrument or how to operate, ask your teacher for help.

Never smell or taste chemicals unless you are allowed.

After the experiment

Wash all instruments after using and return them to the places where they were

Throw waste materials in proper waste baskets.

First aid

Report all accidents to your teacher immediately.

If you pour any chemicals onto your body or clothes, wash with plenty of water and report to your teacher.

 

1.Your teacher will probably tell you the rules above __________ the first lab lesson.

A. before            B. since            C. during           D. after

2.It’s clear that you can _______________

A. bring food into the lab

B. enter the lab anytime

C. smell chemicals as you like

D. learn science directly in the lab

3. If you get chemicals on your clothes, which of the following ways can you find to solve it?

A. Before the experiment                   B. First aid

C. During the experiment                   D. After the experiment

 

1.A 2.D 3.B 【解析】 试题分析:这篇短文主要介绍的是首次实验课的时候老师对实验室各个阶段实验规则的详细解读。 1.A细节理解题。根据文中语句“Listen closely when your teacher reads and explains the rules before your first lab lesson.”的描述可知。首次实验课之前老师可能为你详细解读实验规则。结合选项可知应选A。 2.D细节理解题。根据文中语句“Laboratory work is your chance to learn science firstly.”的描述可知。从实验室可以直接学到科学知识。结合选项可知应选D。 3.细节理解题。根据文中语句“If you spill (溅出) any chemicals onto your body of clothing, wash with plenty of water and report to your teacher.”的描述可知,如果化学药品溅到衣物,要立即处理。结合选项可知应选B。 考点:教育类短文阅读。
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