America is a very large country, but traveling there is really very quick and easy. When you are paying a visit to the USA and want to see as much of the (1) as possible, you'd better travel by bus. There is fast 2 service between cities, for example, the Greyhound Bus Service. All of its buses have a picture of a dog on the side. Some buses have two storeys（层）. The top covering of the bus is often made of glass. In the summer time, the heat of the sun will get in (3) the glass and you may (4) too hot. Although the buses are cooled by air-conditioner（空调）, it doesn't (5) work well because the sunshine on the top storey is too (6) . The seats are very soft. Over each seat there is a reading light. On the long-distance journey, stops are made for meals at roadside (7) . You can have enough time to stretch your legs and have a good taste of food. It takes about three and a half (8) to cross America by bus with short stops for meals. Many people, especially tourists, like to (9) a bus around the country. If you have chances to visit America, don't (10) to try a bus.

Many taxi drivers in Beijing are in a club called “Ham Radio Community(协会)”. Through the radio of the  1 , they can talk and help each other.

Chang Tong has been a Beijing taxi  2 for over ten years. He is a member of the Ham Community. He said, “Since joining the  3  ,I feel that I have a lot of friends around me while driving. It has much more fun now.”

Other members of them of the team are as 4 as Chang Tong. A driver named Mao Lixin was saved from serious situation(处境). One night, two men  5 his taxi and told him to drive them to a far-away place. During the drive, they wanted to go to different  6 many times. Mao was afraid that  7 would happen and sent a message for help. Some member drivers got the  8 , and they drove close to Mao to follow his car. At last two men got out of the car without 9 him any money, but nothing else happened.

When one driver is in need of help,  10 from all across the city will give him or her a hand. To these taxi drivers, Ham Radio gives them some pleasure during their boring daily driving.

1.                A．bus            B．train           C．plane D．taxi

2.                A．teacher        B．worker         C．driver    D．doctor

3.                A．school         B．club           C．class D．team

4.                A．exciting        B．excited         C．surprised D．surprising

5.                A．drove          B．ran            C．stopped  D．called

6.                A．places          B．cities           C．police stations  D．roads

7.                A．bad nothing     B．bad something   C．something bad D．nothing bad

8.                A．message        B．letters          C．books    D．telephone

9.                A．spending       B．taking          C．sending   D．paying

10.               A． other         B．others         C．another   D．the other

In the summer of 1978 an English man named Steven was driving his tractor through a field of wheat when he discovered something strange. Some of his wheat was lying on the ground. The flattened wheat formed(形成)a circle about six meters across . Around this circle were four smaller circles of flattened wheat.

　 Three years later a farmer who lived nearby discovered almost the same circles in one of his fields. These circles were larger—nearly 15 meters across . That same year , another English farmer discovered three circles of flattened wheat on his land—one large circle between two small circles. During the following years, farmers in England found circles in their fields more and more often.

　 The circles are called “crop circles” because they usually appear in fields of wheat or corn. The wheat in the circles lies on the ground but is never broken; it keeps on growing, and the farmers can later harvest it. Farmers always discover the crop circles in the morning, so the circles probably form at night. They appear only in the months from May to September. What causes the crop circles?

　 At first, people thought that some kids were making them as a joke, or that farmers were making them to attract tourists.(In fact, in 1991, two men said they made the circles themselves, but many scientists don’t believe them.) People tried to copy them: They tried to make circles exactly like the ones the farmers had found. They couldn’t do it. They couldn’t enter a field of wheat without leaving tracks, and they couldn’t flatten the wheat without breaking it.

　 Several times people reported seeing stranger objects near the fields where crop circles later appeared. Many people believe that these crop circles are the messages sent by living things from outer space(外层空间)or the marks left by their spaceships.

　 Scientists who have studied the crop circles try to find out what causes them. In the summer of 1990 some scientists spent three weeks in the part of England where many circles have appeared. They had all the latest high-tech equipment(最新高科技设备). The equipment—worth 1.8 million dollars—got nothing. But one night, as the scientists were watching a field, crop circles formed in the field behind them, which were quite different from the others. The scientists had neither seen nor heard anything.

　 When Steven discovered the crop circles on his land in 1978, he said, “It was just like something that had landed in the field from the air and gone back up again. I don’t know what to make of these things.”

　 Crop circles have appeared in England, Japan, the United States and Russia. Experts from all over the world have studied them, and they say what Steven said: They don’t know what to make of these things.

1.Which picture is probably the one formed in the field behind the scientists?

2.“Flattened wheat” means ___________.

　　   A. broken wheat             B. lying wheat

　　   C. harvested wheat          D. growing wheat

3.The passage is mainly about something ___________ .

A. that is done by living things from outer space

B. that cannot be solved but found all around the world

C. that cannot be made clear or understood

D. that is discovered and copied by the farmers