题目列表(包括答案和解析)
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 (结冰) 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(任务) 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
In order to eat safely, I think we ________ make some food by ourselves instead of buying some.
A.used to
B.prefer to
C.had better
D.are supposed to
给对话排列顺序(8分)
1 Hi,Mark.I want to have a class party.Will you help me organize it?
________No,I don’t think we should watch a video.Some students will be bored.Let’s play party games.
________Let’s have it today after class.
________Sure,Andrea.I can help you.So when shall we have the party?
________Okay,Let’s have it tomorrow.
________Good idea.Can you organize the party games?
6 There’s a test tomorrow.Students will leave early to study for their tests.Let’s have it on the weekend.
________No,today is too early.If we have it today,half the class won’t come.
________Sure,I can do that.And can you make some food for us?
________Okay.Let’s have it on Saturday afternoon.We can all meet and watch a video.
11 Yes,that’s no problem.
P: Hi, Mark. I want to have a class party. __1._
M: Sure, Andy. I can help you. So when shall we have the party?
P: __2.__
M: No, it is too early today. If we have it today, half the class won’t come.
P: OK, let’s have it tomorrow.
M: Hmm…__3.__ Students will leave early to study for the test. Let’s have it on the weekend.
P: OK, let’s have it on Saturday afternoon. We can all meet and watch a video.
M: No, __4.___ Some students will be bored. Let’s play party games.
P: OK, good idea. Can you organize the party games?
M: Sure, I can do that. __5.__
|
A. You will have a good time. B. And can you make some food for us? C. Will you help me organize it? D. There’s a test tomorrow. E. I am going to take a bus to the party. F. Let’s have it today after class. G. I don’t think we should watch a video. |
P: Hi, Mark. I want to have a class party. __【小题1】_
M: Sure, Andy. I can help you. So when shall we have the party?
P: __【小题2】__
M: No, it is too early today. If we have it today, half the class won’t come.
P: OK, let’s have it tomorrow.
M: Hmm…__【小题3】__ Students will leave early to study for the test. Let’s have it on the weekend.
P: OK, let’s have it on Saturday afternoon. We can all meet and watch a video.
M: No, __【小题4】___ Some students will be bored. Let’s play party games.
P: OK, good idea. Can you organize the party games?
M: Sure, I can do that. __【小题5】__
| You will have a good time. And can you make some food for us? Will you help me organize it? There’s a test tomorrow. I am going to take a bus to the party. Let’s have it today after class. I don’t think we should watch a video. |
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