Laboratory（实验室）word is your chance to learn science firsthand. It can be fun but you must be careful to prevent injury. Listen closely when your teacher reads and explains the rules before your first lab lesson.

LABORATORYRULES
Throughout the Lesson	● Do not enter the science lab without the teacher’s permission. ● No food or drinks are to be allowed in the science lab.
Before the Experiment	● Read all instructions carefully before every experiment. ● Prepare all equipment and organize them so that you will not knock them over while doing the experiment.
During the Experiment	● If you are unsure of how to use any equipment or how to use, ask your teacher for help. ● Never smell or taste chemicals unless your teacher gives permission.
After the experiment	● Wash all equipment after use 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 spill any chemicals onto your body or clothing, wash with plenty of water and report to your teacher.

【小题1】Before every experiment, you should ______.

A．taste the chemicals first	B．clean all the equipment
C．read all instructions carefully	D．report all the accidents to the teacher

【小题2】It is 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

【小题3】If you get chemicals on the clothing, you can find ways to solve it in the part ______.

A．Before the Experiment	B．First Aid
C．During the Experiment	D．After the Experiment