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Laboratory work 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 alowed in the science lab.
Before the Experiment
·Read al instructions carefuly before every experiment.
·Prepare al apparatus(仪器)and arrange them so that you wil 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 smel or taste chemicals unless your teacher gives permission.
After the Experiment
·Wash al apparatus after use and return them to the places where they were.
·Throw waste materials in proper waste baskets. First Aid
·Report al accidents to your teacher immediately.
·If you spil( 溅 出 )any chemicals onto your body or clothing, wash with plenty of water and report to your teacher.
1. Your teacher wil probably tel you the rules above _____ the first lab lesson.
A. before B. since C. during D. after
2. Before every experiment, you should _____.
A. taste the chemicals first
B. clean al the apparatus
C. read al instructions carefuly
D. report al the accidents to the teacher
3. When you are not sure how to use al apparatus, _____.
A. try them on your own
B. read the rules carefuly
C. ask your teacher for help
d. put them back
4. It is clear that you can _____.
A. bring food into the lab
B. enter the lab anytime
C. smel chemicals as you like
D. learn science directly in the lab
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
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书面表达:
根据提示写一篇短文,必须使用所给提示词,字数50~70。
假如你是王芳,现在你给你的美国朋友Jeff发一份E-mail,告诉他你和同学们上周日去中山公园游玩的情况和感受。
你们在早上8:00到学校大门口集合,大约九点钟到达中山公园……
meet, arrive, have a party, play games, climb, see, how beautiful, hometown, tired, happy, never forget
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查看习题详情和答案>>根据句意,用括号内所给单词的适当形式填空。
1.Tom (drop) his schoolbag on the bus. He felt worried.
2.My mother is looking forward to (meet) you.
3.At first, our foreign English teacher spoke so (quick) that no one could follow her.
4.— What’s wrong with Maria?
— She fell off the bike and hurt (her).
5.— How clean your house is!
— Thank you. It (clean) every day.
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