Have you ever wondered?
Why do airplanes take longer to fly west than east?
It can take five hours to go west-east from New York (NY) to London but seven hours to travel east-west from London to NY. The reason for the difference is an atmospheric phenomenon (大气现象) known as the jet stream (气流). The jet stream is a very high altitude (=" above" sea level) wind which always blows from the west to the east across the Atlantic. So the planes moving at a constant air speed go faster from the west to the east when they are moving with the wind than in the opposite.
What would happen if the gravity on Earth was suddenly turned off?
Supposing we could magically turn off gravity. Would buildings and other buildings float away? What happened would depend on (依靠) how strongly the things were attached (吸附) to the earth. The earth is moving at quite a speed, moving at over a thousand miles per hour. If you turn something around your head on a string, it goes around in a circle until you let go of the string. Then it flies off in a straight line. ‘Turning off’ gravity would be like letting go of the string. Things not attached to the earth would fly off in a straight line. People in buildings would suddenly shoot upwards at a great speed until they hit the ceiling (=" top" surface of a room). Most things outside would fly off into space.What information can we get from the first passage?
| A．It is the jet stream that affects how fast airplanes fly. |
| B．Planes go slower when they are moving with the wind. |
| C．It takes more time to fly from NY to London than from London to NY. |
| D．The jet stream always blows from the east to the west across the Atlantic. |
The underlined word “shoot” in the 2nd paragraph means “_________”.
| A．send for | B．move quickly | C．come out | D．grow quickly |
It can be known that without gravity _________.
| A．buildings and other structures would float away |
| B．trees and buildings would not so easily fly off |
| C．something around your head would not float away |
| D．everything outside buildings would fly off into space |
Which of the following is not mentioned in the passage?
| A．It takes seven hours to travel from London to New York. |
| B．The earth is moving at a high speed. |
| C．Things on the earth will float away if there’s no gravity. |
| D．Things not attached to the earth would fly off in a straight line. |
Where can we read this passage?
| A．In a research paper. | B．In a short story. |
| C．In a travel magazine. | D．In a student’s book |
We have to agree that brushing teeth day after day can be a bit of pain. What’s even worse is trying to get much water to rinse(冲洗) out the toothpaste. Not only is it difficult, but also a waste of water. Of course, you could use a rinsing cup, but that has to be cleaned all the time. Now, a design company has finally invented an interesting invention called Rinser to help you do it.
A company in New York recently invented a toothbrush. It looks very much like a common one expcet one thing. That is when you pour water on the handle, it magically sprouts(涌向) straight into your mouth. It makes rinsing an easy thing and a lot of fun.
The brush is designed such that its handle(把手) has a hollowed(空的) out part. This part collects tap water and directs it to a tiny spout(喷口). All the users have to do, is aim the tap onto the spout and the toothbrush will offer you water as much as possible.
This kind of cool toothbrush won’t be used until November, 2012. Although it is convenient, it is a little expensive. Each one can cost $22 if you order it from the design company. Once it is sold in stores, the price will rise up to $34.99. If you are interested in this cool toothbrush, ask your mum or dad to get one for you!What can Rinser do according to the passage?
A.It can save time when you brush your teeth.
B.It can help you rinse the toothpaste.
C.It can help wash your face..What does Rinser look like ?
A.It looks like a common toothbrush.
B.It looks like a tap.
C.It is too heavy..What does Paragraph 3 mainly tell us?
A.It mainly tells us what Rinser looks like.
B.It mainly tells us when we can use Rinser.
C.It mainly tells us how Rinser offers you water..The underlined word“Once”means“________”in Chinese.
A.一次 B.一旦 C.曾经.When will people start to use Rinser according to the passage?
A.In December 2012.
B.In November 2012.
C.In November 2013.
Americans love cars．They go everywhere in them．8 5％of people in the US go to and from work by car. And most adults have driving licenses．Why does this car culture exist?How it started？
America’s love of cars started after the war(战争)when soldiers returned home from World War II to rebuild their lives．They borrowed money from the government to buy houses and cars which became the symbols of status(地位)．The more money they had，the bigger their cars were．
●Making of roads
During the war，President Eisenhower noticed what good roads Germany had．He decided to build new four-lane(四车道)roads in America．He said if something happened suddenly，the two-lane roads wouldn’t be able to carry all the cars that would suddenly leave the cities．Car and oil companies liked his idea and building started．
●Car lover
Not just teenagers are crazy about cars．Some Americans love their cars so much that they paint their cars beautifully .These are called Art Cars．Every April there is an activity in Houston，Texas，where they show their cars．
●Pollution
Cars have polluted the environment．American President Bush refused a worldwide law that is against pollution．Many countries were angry about it．Bush said he had to think of the American economy(经济)and all the American people that make money from cars．Factories say they want to make cars that pollute less．But others say making cars that pollute less will never be as good as having fewer cars．When did Americans begin to love cars?
A.Before the new two-lane roads were built．
B.After World War II．
C.During World War II．.New four-1ane roads were build _______.
A.in Germany
B.by car and oil companies
C.in America.The underlined word “building” here means “the building of _______”．
A.companies B.roads C.houses.What were other countries’ feelings about Bush’s decision?
A.They agreed with him．
B.They showed anger to it．
C.They paid no attention to it..What does the last sentence mean?
A.It’s better to have fewer cars．
B.It’s better to make cars that pollute less．
C.It’s easier to make cars that pollute less．
Audi as a car company is very famous in the world.It is famous for its popular cars and special designs.It is now said that a two-wheel bike of 2012 will come into our life.The new bike,called the Audi e-bike Worthersee,is a kind of battery powered e-bike.It is also a new kind of sports bike.
The e-bike doesn't use any electricity straightly.It is not a normal bicycle either.The company describes the bike as "high-end-pedelec".It makes the bike for "sport and fun”.The design is very super,probably for the reason of being different from other bikes' look.Audi wants us to know that e-bike,like their cars,is very good in performance and speed.
The e-bike is not heavy at all;it is only 52.17 pounds.It has three different functions(功能）。You can either just ride it or the electric motor help you when you ride it,or you can just sit on it to relax and let the electric motor do all the work. It is such an interesting bike that you can ride in different ways.What's more,it has a surprising fast top speed at 50 miles per hour. Audi is a car company whose cars are popular and strange.
The e-bike is the same as other bikes’ look.
.If you are too tired to ride, the e-bike can also take you to the places you want to go.
The e-bike is heavy and it has two different functions.
If you ride the e-bike Worthersee,others on normal bikes will fall behind you.
Paper was not made in southern Europe until the year of 1100.Thouth Scandinavia now makes a great deal of the world’s paper, it had not begun to make it until 1500. It was a German named Schaeffer who found out that one could make paper from wood. After that, forest countries, such as Canada, Sweden, Norway, Finland and the United States, became important in paper making. Today in Finland, for example, no industry is bigger than the forest industry. And the paper industry is the most important part of it.
Modern paper-making machines are very big, and they make paper very fast. The biggest machines can make a piece of paper 750 meters long and six meters wide in one minute.
When we think of paper, we think of newspapers, books, letters, envelopes（信封）, and writing paper. But there are many other uses. Each year, more and more things are made of paper. We have had paper cups, plates, and dishes for a long time. But now we hear that chairs, a tables and even beds can be made of paper. The newest thing made of paper in the world may be a paper house. It is not a small house for children to play in, but a real, big house for people to live in. it is not expensive. You can put up a paper house yourself in a few hours, and you can use it for about 5 years.
根据短文内容，选择正确答案。 When was paper made in Europe?
| A．The year 1500. | B．The year 1400. |
| C．The year 1200. | D．The year 1100. |
found out that paper can be made from wood.
| A．A Canadian | B．An American |
| C．A German | D．A Chinese |
In which country is the forest industry the biggest industry?
| A．Finland. | B．Sweden. |
| C．Norway. | D．The Untied States. |
How long can the biggest modern paper-making machines make a piece of paper 750 meters long and six meters wide?
| A．In a day. | B．In an hour. |
| C．In a minute. | D．In a second. |
What can be made of paper?
| A．Paper cups. |
| B．Plates, dishes. |
| C．Chairs, tables, beds and houses. |
| D．All of above. |
A: Recently, the word “clone” appeared very often in the newspapers. Do you know its meaning?
B: Not exactly, I read a report in yesterday’s newspaper. It said there was a Scottish Dolly. It was the first time that a cloned lamb had been made from an adult（成年的）sheep.
A: Actually, the word “clone” means to produce the “same” animal by taking cells（细胞）from an adult one, I think, if we know how to do cloning, we need only keep a small number of sheep, cows or horses.
B: There’s more to it. Recently there have been some people who ever want to clone humans.
A: It seems interesting. But do you think it is possible to do that?
B: No, I don’t think so. First I think we cannot clone a dead person, because the cells in his body are dead already.
A: Then we can clone a living person?
B: Again no! You might clone yourself one after another, but it is only a replica(复制品), not real you. It is only something, not a human.
A: Now, you mean that a real human can speak, think and create, and these abilities cannot be cloned?
B: True enough! I think the main purpose of Dr. Lan Wilmot, the “father” of Dolly, is to make better animals. It has nothing to do with human cloning.
根据对话内容，选择正确答案。 According to the dialog, the word “clone” often appeared.
| A．in the newspaper | B．on TV |
| C．in the magazines | D．over the radio |
What does the word “clone” mean? It means.
| A．to give birth to new life |
| B．to make a new thing |
| C．to make the “same” living thing by taking cells from an adult one |
| D．to make something new |
The scientist who has cloned a lamb successfully is from .
| A．America | B．Scotland |
| C．Japan | D．Russia |
Dolly was the name of.
| A．an adult sheep |
| B．a person who did cloning |
| C．a replica |
| D．a lamb that was cloned recently |
Humans can’t be cloned because.
| A．the abilities of thoughts and creativity（创造）of human can’t be cloned |
| B．scientists are not able to do that |
| C．people don’t agree on human cloning |
| D．there aren’t better labs |