Laboratory work is your chance to learn science first-hand. 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.
LABORATORY RULES
|
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 apparatus (仪器) and arrange 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 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 in proper waste baskets.
|
First Aid
| Report all accidents to your teacher immediately.
If you spill (溅出) any chemicals onto your body of clothing, wash with plenty of water and report to your teacher.
|
小题1:Your teacher will probably tell you the rules above
the first lab lesson.
| A．before | B．since | C．during | D．after |
小题2:Before every experiment, you should
.
| A．taste the chemicals first |
| B．clean all the apparatus |
| C．read all instructions carefully |
| D．report all the accidents to the teacher |
小题3:When you are not sure how to use all apparatus,
.
| A．try them on your own | B．put them back |
| C．ask your teacher for help | D．read the rules carefully |
小题4: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5: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 |
