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    Lab work is fun but you must be careful. Listen carefully when your teacher reads and explains the rules before your first lab lesson.

LAB RULES

Throughout the lessons

* Do not enter the science lab without the teacher's permission(允许).

* No food or drinks are to be allowed in the science lab.

Before the Experiment

* Read all instructions carefully before every experiment(实验).

* Prepare all apparatus(仪器)and put them in right places so that you will not knock them over while doing the experiment.

During the Experiment

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

* Never smell or taste chemicals unless your teacher gives permission.

After the Experiment

* Wash all apparatus after use and return them to the places where they were.

* Throw waste materials into proper waste baskets.

First Aid

* Report all accidents to your teacher immediately.

* If youspillany chemicals onto your body or clothing, wash with plenty of water and report to your teacher.

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