Scientists who study the climate are still arguing about how fast the earth is warming and how much it will warm, but they do agree that the earth is warming and that it will keep warming if we don’t do anything about it.
Scientists agree that the burning of fossil fuels (化石燃料) like oil and coal cause greenhouse gases to escape into the air and that these gases are causing most of the warming. Another cause is deforestation (cutting down trees) . Trees soak up carbon dioxide, one of the greenhouse gases, from the air.
There are already some changes happening because of global warming. Sea level is rising and some animals are already moving to new homes. It’s already too late to stop global warming completely.
If the warming gets worse, as scientists expect, there may be some kinds of plants and animals that is disappearing because they can’t move to new homes. There may be more storms and floods. Sea level may rise so much that people have to move away from the coasts. Some areas may become too dry for farming.
Global warming is a very difficult problem to fix. People are having a hard time agreeing on what to do about it. For example, everyone agrees that wasting energy is a bad thing to do. But some people think that the federal government (联邦政府) should make laws about it, while other people think it should be up to each person or business to decide what to do.
Many states and businesses in the United States are not waiting until the federal government decides what to do. They have already started working on the problem.What are the scientists arguing about in the passage?
A. How fast is the earth warming? B. How much will the earth warm?
C. The earth will keep warming if we don’t do anything about it. D. Both A and B.What does the underlined phrase “soak up” mean?
| A．take in | B．grow up | C．take off | D．set up |
What may be the causes of global warming?
| A．The disappearance of plants and animals and the wasting energy. |
| B．The burning of fossil fuels and storms and floods. |
| C．The burning of fossil fuels and deforestation. |
| D．The rising of sea level and deforestation. |
What is the best title of this passage?
| A．The reason for global warming | B．How to stop global warming |
| C．The changes to the world | D．The global warming |
You can’t see any object unless light from that object gets into your eyes．Some of the things you see give off light of their own。The sun，the stars，a lighted lamp are the examples that can be seen by their own light．But most of the things you see are not giving off light of their own．They are just reflecting(反射)light that falls on them from the sun or some other luminous bodies．The moon，for example，doesn’t give off any light of its own．It is not 1uminous．You see it because sunlight falls on it and some of the sunlight reflects on the earth．So moonlight is only second—hand sunlight．
When you look at a book，it sends some of the light which fails on it to your eyes，and you see the book．If light could be kept out from where you’re so that there would be no light from the book to reflect．Then you couldn’t see the book even with your eyes wide open．Light travels so fast that the time in which it travels from the book you’re reading to your eyes is as short as if there were no time at time．Light reaches us from the moon，which is about 380，000 kilometres away，in only a little more than a second．You can see the book because________．
| A．your eyes are close to it | B．it reflects some of the light |
| C．it has light of its own | D．it is big enough to be seen |
The Chinese meaning of the world“luminous”is close to_______．
| A．闪光的 | B．看不见的 | C．发光的 | D．明亮的 |
________has light of its own．
| A．The moon | B．The earth | C．The sun | D．The satellite of Dong Fong Hong |
Light travels about_________kilometers per second．
| A．300，000 | B．100，000 | C．400，000 | D．190，000 |
Which of the following is TRUE?
| A．All the things you can see give off light． |
| B．Light from the book is much faster than that from the moon． |
| C．The moment you open your eyes，the light from the book travels to your eyes． |
| D．Light travels so fast that there is no time for you to read． |
Mary didn’t understand such sentences as“She is blue today”，“You are yellow”，“He has a green thumb”，“He has told a white lie”and so on．And she went to the teacher Mrs James for help．
Mary：Mrs James，there is a colour in each of the sentences．What do they mean?
Mrs James：In everyday English，Mary，blue sometimes means sad，yellow afraid．A person with a green thumb grows plants well and a white lie is not a bad one．
Mary：I’m afraid I don’t understand them a11．Would you give me an example for“a white lie”?
Mrs James：Certainly．Now I just give you some cakes．In fact you don’t like it，but you don’t want to let me know it．Instead you say，“No，thanks．I’m not hungry．”That’s a white lie．
Mary：It sounds very interesting．Thanks very much．
Mrs James：You are welcome．Colours are meaningful．I think you will meet more sentences like these in the future．Please come to me if you have any questions．Blue sometimes means sad in________English．
| A．good | B．spoken | C．usual | D．poor |
I don’t have a green thumb，so all my plants________．
| A．die off | B．grow well | C．look nice | D．are good |
David is yellow and he is________to climb the tall tree!
| A．happy | B．clever | C．brave | D．afraid |
He didn’t like me to know________of the accident．He told me a white lie at last．
| A．the reason | B．the true story | C．the meaning | D．the answer |
He is ________today．He is told that his father is seriously ill．
| A．blue | B．yellow | C．green | D．white |
Mr Smith was ill and he went to see a doctor． The doctor asked him to put out his tongue（舌头）， and then he said， “OK， You can put your tongue back now． There’s nothing wrong with you， but I’m afraid you have a problem． You hardly ever take exercise．”
“But， doctor，” Mr Smith said， “I don’t think so．”
“Don’t tell me what you think，” the doctor said， “I know what you need． I see a lot of people like you． None of them goes any exercise． They sit in offices all day and in front of the television in the evening． You must walk quickly for at least（至少）20 minutes a day．”
“I don’t want to hear any excuse（借口），” the doctor said． “You must find time for exercise． If you don’t， you will get fat and have health problems．”
“But I walk every day，” Mr Smith said．
“Oh， yes， and I know what kind of walking that is． You walk a few meters to the bus stop from your house， a few more meters from the bus stop to your office， and a few more meters from your office to your dining–room for lunch and back． That’s not a real walk． I’m talking about a walk in the park or by the lake for twenty minutes every day．”
“Would you please listen to me， doctor? Mr Smith said， getting a little angry with his doctor．
“I’m a postman，” Mr Smith went on， “and I walk for nearly（几乎）seven hours every day．”
For a moment the doctor was silent（沉默的）， then he said quietly， “Put out your tongue again， will you?”
根据短文内容，回答下列问题。 Where did Mr Smith work?
___________________________________________________________How did the doctor look over Mr Smith?
___________________________________________________________ What did the doctor ask Mr Smith to do?
___________________________________________________________Did Mr Smith take enough exercise every day?
___________________________________________________________What do you think of the doctor?
___________________________________________________________
The Internet has become part of teenage life. There’s a report on 3,375 students aged from 10 to 18 in seven Chinese cities. It says that 38% of them believe they use the Internet often. While most of them get useful information and use the Internet to help in their studies, some are not using it in a good way. Many are playing online games too much. A few even visit Web sites they should not look at. Bad things can happen if young people spend too much time on the Internet.
In order to help young people use the Internet in a good way, a textbook on good Internet behavior has started to be used in some Shanghai middle schools this term. It uses real examples to teach students all about good ways of using the Internet. Some students also make online friends. But if you are meeting a friend offline, let your parents know.
Teachers and parents all think the book is a very good idea. It will teach students how to be a good person in the online world. It will be a guide for teens using the Internet and keep students away from bad sites.The underlined word “it” means_____?
A. the book B. the report C. the Internet From the report, about____ students between 10—18 years old
in the seven cities use the Internet often.
A. 3,375 B. 1,280 C. 2,100 What do most of the students do on the Internet?
A. They get useful information to help in their studies.
B. They play online games.
C. They make online friends.Why do teachers and parents think the book is a good idea?
A. Because it helps with the students’studies.
B. Because it is used in Shanghai middle schools.
C. Because it teaches students how to use the Internet in a good
way.Which is the best title for the passage?
A. The Internet is very useful.
B. Students can’t use the Internet.
C. Be careful when using the Internet.
Americans think a great deal about time. From childhood they learn to value（珍惜）time. As children, they are taught to be on time to go to school, to do work and to do everything. When they are having a good time, they say that time flies. When a person is dying, they say he is living on borrowed time. Time is money. Time is knowledge. Time is everything in America. A working American has to work hard for 8 hours a day or 40 hours a week. This is the working time. In his free time, he also works hard for more money. Even Saturday and Sunday are filled with（充满）activities. In the street you can hardly see a man who walks slowly. They walk very fast. In fact, they are running. They love time because time brings them money, comforts and progress. But sometimes they also hate time, for they feel they have become servants（仆人）of the clock.A working American has to work___ days a week in his working
time.
A. seven B. six C. five An American always walks____.
A. sadly B. slowly C. fast “He is living on borrowed time” means_____.
A. He has little money.
B. He has no time
C. He is dying In his free time, an American usually_____.
A. plays cards with their friends
B. stays at home all day and watched TV.
C. gets more money by work. Which of the following is NOT TRUE?
A. The Americans usually value time.
B. The Americans are often on time.
C. All Americans love time and don’t hate time.