科目:初中英語 來源:英語教研室 題型:050
You may ask your friends to try to do that when you are having dinner together. There is a saltcellar on the table. You must use salt when you carry out this experiment.
First you put the string across the piece of ice. Then put some salt on the ice. Salt makes ice melt(融化). The ice round the string will begin to melt. But when it melts, it will lose heat. The cold ice cube will make the salt water freeze (結(jié)冰) again.
After a minute or two you may raise the piece of string and with it you will raise your piece of ice!
This experiment can be very useful to you. If, for example, there is ice near the door of your house, you must use very much salt to melt all the ice. If you don’t put enough salt the water will freeze again.
1. We must use ________ when we carry out this experiment.
A. a fridge B. some food C. a table D. some salt
2. How long will it take to carry out this experiment?
A. More than three minutes. B. Five minutes or so.
C. Only one minute or two. D. About ten minutes.
3. What is the task(任務(wù)) of this experiment?
A. Put the ice cube into the glass of water with the help of the string.
B. Take out the ice cube in the glass of water with the help of the string.
C. Take out the ice cube in the glass of water with your fingers.
D. Put some salt on the ice cube and then put the string across it.
4. How many things at least are used in this experiment?
A. Three. B. Four. C. Six. D. Seven.
5. We can learn something about ________ from the passage.
A. physics B. biology C. chemistry D. maths
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科目:初中英語 來源:2011-2012學(xué)年遼寧大連甘區(qū)初二下期階段學(xué)習(xí)質(zhì)量檢測期中英語卷(帶解析) 題型:完型填空
The task(任務(wù))of students is to study.But studying __21__a right way, or we will waste(浪費)time or __22__.The following are some ways of studying .The best time for reading is in the morning ,___23__ in the morning the air is fresh and the mind is clear.
__24__studying,we must have patience(耐心).If we have not __25__ a text well,we must read it again.We should not read the next one until we have learnt the first one.
When we are __26__,we must put our hearts into the book,or we can get __27__ from the book that we are reading
We must always __28__“why” If we can’t understand something well,write it down and ask our teachers,parents or friends
Though there are many __29__of studying,the above will be quite enough if we can __30__them in heart and do so.
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科目:初中英語 來源:2011-2012學(xué)年遼寧大連甘區(qū)初二下期階段學(xué)習(xí)質(zhì)量檢測期中英語卷(解析版) 題型:完型填空
The task(任務(wù))of students is to study.But studying __21__a right way, or we will waste(浪費)time or __22__.The following are some ways of studying .The best time for reading is in the morning ,___23__ in the morning the air is fresh and the mind is clear.
__24__studying,we must have patience(耐心).If we have not __25__ a text well,we must read it again.We should not read the next one until we have learnt the first one.
When we are __26__,we must put our hearts into the book,or we can get __27__ from the book that we are reading
We must always __28__“why” If we can’t understand something well,write it down and ask our teachers,parents or friends
Though there are many __29__of studying,the above will be quite enough if we can __30__them in heart and do so.
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