题目列表(包括答案和解析)
A.Swinging your arm from side to side means "yes". |
B.If the ground is dark, light smoke can't be seen. |
C.If you need some medicine, make a symbol "II". |
D.The pilots make replies with a blue light at night. |
A.The explanation of building signals on an island. |
B.The importance of making signals on an island. |
C.Ways of sending out signals on a lonely island. |
D.Ways of receiving signals from a lonely island |
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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下面四幅图画描述了你某天放学后发生的一件事。请你根据这些图画提示,展开合理想象,用英语写一篇日记,时间是2012年5月11日,星期五,天气预报:有雨。
注意:
1.词数90左右。日记的开头已为你写好,不计入总词数。
2.要点完整、层次清晰、语法正确、上下文连贯。
3.文中不得使用真实的人名、校名。
May 11, 2012 Friday rainy
This afternoon, when I walked out of school, the weather changed. ___________________
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