B

  Two men were sitting together in a plane. They were on a long journey. One of the men was a businessman. The other was a farmer. They sat without talking for a while, then the farmer said, “Let’s do something to pass the time.”

  “What do you want to do?” the businessman asked. “We can ask each other riddles.” The farmer said, “You start.” “Let’s make the rules first,” the businessman said. “That’s not fair. You are a businessman with much knowledge. You know more things than I do. I am just a farmer.”

  “That’s true.” The businessman said. “What do you want we should do?” “If you don’t know the answer to a riddle, you pay me $100. And if I don’t know the answer, I’ll pay you $50.” The farmer said. The businessman thought about this, then he said, “OK. That’s fair. Who will go first?”

  “I will,” The farmer said. “Here is my riddle. What has three legs when it walks, but only two legs when it flies?” The business man repeated the riddle, “What has three legs when it walks, but only two legs when it flies? Mm, that’s a good one. I’m afraid I don’t know the answer.” He gave the farmer $100, then said, “Tell me the answer. What has three legs when it walks, but only two legs when it flies?” “I don’t know.” The farmer said and gave him $50.

61. The story happened ____________.

   A. on a farm                        B. in a shop

   C. before a long plane journey          D. between two passengers

62. What does the word “riddle” mean in this story?

   A. A difficult question to find the answer to.                 

B. Something to help to make rules.

   C. Something to win money.                

D. a kind of game in doing business.

63 Why did the businessman agree to give more money if he lost?

   A. He made much more money than the farmer.           

B. He thought he knew more than the farmer.

   C. He was interested in making riddles.                      

D. He was better at playing riddle games.

64. The farmer _________.

   A. enjoyed himself on his long journey.          

B. didn’t want to pay even one dollar          

C. spent all his money on the plane ticket.        

D. won fifty dollars by playing the riddle game

65. Which of the following is NOT true?

   A. The two men made rules for their riddle.        

B. The farmer was much cleverer than the businessman.

   C. The two men made their riddle game more interesting by paying it for money.   

D. The businessman knew the answer to his riddle.

C

  Imagine the situation. You are driving along in a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a GPS with you. This invention may be able to help you. It is a device（装置） which uses satellites to find the user’s position. It can find your position to within 20 meters. A GPS cannot start your car, but at least you will know where you are.

  GPS, which means Global Positioning System, is a small radio receiver. It looks like a mobile phone. You can hold it in your hand, or put in you pocket. It is sometimes put into a watch or a telephone. We also find GPS devices in cars, planes, or boats. Some of these devices have electronic maps, so you know where you are. For example, in a city they can tell you the name of the street.

  There are three parts to the Global Positioning System. The first part is the receiver. You can hold it in your hand, or have it fixed into your car, plane, etc. the second part is a group of satellites orbiting the Earth. The receiver contacts at least four of the satellites and calculates its position. The third part of the system is a network of ground stations. They are all over the world. They control the satellites and make sure they are working well. 

  Some people think that in the future the GPS will be as common as the mobile. They are becoming cheaper and more and more accurate（精确的）. There are also new uses for the GPS. Perhaps they will become like watches. Everyone will have one and you will never be lost again.

66.According to the passage, with the help of the GPS, people _________. 

A. can’t be lost in a new city

B. can’t find their way in different counties

C. can learn about the culture of an unknown place

D. can spend the least time getting to another place

67.We can learn from the passage that ___________.

A. there are three parts to the GPS

B. a GPS can’t be put into a watch

C. a GPS can help you start your car

D. the GPS are becoming more and more expensive

68. The underlined word “They” in paragraph 3 means “__________”.

A. Receivers        B. GPS devices     C. Satellites        D. Ground stations

69. The passage is mainly about ____________.

A. The history of the GPS              B. the introduction of GPS

C. the shape of the GPS                D. the three parts of the GPS

70. What can we infer（推断） from the passage?

A. All GPS devices have electronic maps.

B. People in many countries will use the GPS for free.

C. The receiver of the GPS contacts at least five of the satellites.

D. The GPS will become more and more common in everyday life.