网址:http://m.1010jiajiao.com/timu3_id_2369058[举报]
|
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
查看习题详情和答案>>
Working parents feel that they are not giving their children enough care. They think that their children feel 1 and 2 to spend more time with them.
Scientists in some colleges have found that working parents believed that they knew 3 their children, but 4 had ever asked their children what they thought. So scientists interviewed (采访) over 1,000 children of working mothers or fathers to 5 what they wanted. They asked the children 6 they wanted their parents to stay 7 and some 8 questions.After they collected the answers, it was 9 that only 10% of the children in their study said that they wanted more time with their parents. _10_, the children who were interviewed said they wanted their parents to give more 11 to them. They said that their parents were as 12 as a bee. When they were asked about what they 13 most, a large number of the children said that they wanted to feel important and 14 .
So parents should know what their children really want and how to get along 15 with them.
1. A.tired B.afraid C.unhappy D.worried
2. A.think B.let C.ask D.want
3. A.of B.at C.about D.over
4. A.every one B.someone C.anyone D.no one
5. A.try out B.find out C.take out D.put out
6. A.whether B.why C.when D.how
7. A.behind B.at home C.away D.up
8. A.other B.others C.the other D.the others
9. A.surprising B.important C.necessary D.useful
10. A.But B.Also C.However D.too
11. A.food B.care C.money D.practice
12. A.small B.young C.lazy D.busy
13. A.talked B.learned C.needed D.studied
14. A.loved B.hated C.complained D.troubled
15. A.good B.nice C.fine D.well
查看习题详情和答案>>