57.We can infer from the text that "computer-lilerate" means＿＿＿＿＿

A. being able to afford a computer

B.being able to write computer programs

C. working with the computer and finding out its value

D. understanding the computer and knowing how to use it

56. Which of the following is David Tebbutt's ides on the relationship between people and

computers?

puter learning should be made easier.

B.There should be more computer clubs for experts.

C.People should work harder to master computer use.

puters should be made cheaper so that people can afford them.

80. According to the passage, the computer technology can _____ .

A. get rid of the need for frost protection

B. help the farmer get a better harvest

C. tell the farmer why outdoor temperature changes

D. prevent the temperature from dropping to the freezing point

99B

Computer people talk a lot about the need for other people to become "computer-literate." But not all experts (专家) agree that this is a good idea.

One ploneer,in particular,who disagrees is David Tebbutt,the founder of Computertown

UK. Although many people see this as a successful attempt to bring people closer to the computer.David does not see it that way.He says that Computertown UK was formed for just the opposite reason,to bring computers to people and make them"people-literate."

David Tebbutt thinks Computertowns are most successful when tied to a computer club but he insists there is an important difference between the two,The clubs are for people who have some computer knowledge already.This frightens away non-experts,who are happier going to Computertowns where there are computers for them to experiment on.with experts to encourage them and answer any questions they have,They are not told what to do.they find out.The computer experts have to learn not to tell people about computers.but have to be able to answer all questions people ask.People don't have to learn computer terms(术语), but the experts have to expla in plain language. The computers are becoming "peoPle-literate."

79. Which of the following is NOT NECESSARY for Ed Rawlings to do?

A. He should water the orange trees as soon as the temperature drops to the

freezing point.

B. He should decide the quantity of water for the orange trees.

C. He has to water the orange trees more often in January and February.

D. He has to judge how often he should water the orange trees.

78. In the writer's eyes, computers _____ .

A. are too expensive for small farmers

B. can be a valuable tool for the farmer

C. can be used to help oranges grow bigger

D. cannot take the place of the farmer's experience and judgement

77. Ed tried to protect his crop by _____ .

A. using a wind machine to drive away the cold air

B. equipping his orange trees with a computer

C. watering it at the proper time

D. picking his fruit at the first sign of frost

76. The passage is mainly about _____ .

A. a farmer's expert care for his orange trees

B. the different uses of computers

C. growing oranges in Florida's changeable weather

D. different ways of frost protection

75. The passage is mainly about _____ .

A. a group of cold-water swimming lovers

B. the Polar Bears' life in New York

C. doctors' ideas about cold-water swimming

D. the requirements of the Polar Bear Club

96上海C

Farmer Ed Rawlings smiles as he looks at his orange trees. The young oranges are growing well in Florida's weather. Warm sunshine and gentle rains, along with Ed Rawlings'expert care, will produce a good crop of oranges this year.

But Ed has to fight against Florida's changeable winter weather. In January and February, temperatures can destroy Ed's entire orange, crop. Having farmed in Florida for the past 35 years, Ed Rawlings is prepared for the frosts(霜). When temperatures drop below freezing， Ed tries to save his crop by watering his orange trees. The water freezes and forms a thin layer (层)of ice on the trees. Strange as it may sound, this thin layer of ice actually keeps the fruit warm.

What happens is simple. When the trees are watered, the water loses heat and becomes ice. The warmth of the heat it loses is sucked in by the fruit and keeps its temperature at a safe level. Ed Rawlings has effectively used this method(方法)to save many orange crops.

But Ed still faces some difficulties. The trees should be watered at the exact moment the temperature drops to the freezing point. Also, just the right quantity of water must be used. Too much water can form a thick layer of ice that will break the trees'branches. Another difficulty is that wind blows away the heat. So Ed has to worry about not only when but also how often his trees should be watered, and how much water should be used.

Computer technology may help Ed Rawlings with some of these worries. With equipment, air and soil temperatures and wind speed can be measured. The information is fed into a computer which can tell when temperatures drop to freezing. The computer can correctly decide the quantity of water to be used and how frequently the trees should be watered. Ed Rawlings will find looking after his orange trees a lot easier with the help of a computer, and we'll all have the benefits(or advantages)of computer-age oranges.

74. The Polar Bears like to swim all the year round,for _____ .

A. they can remain young

B. it is an easy way to keep the body warm in winter

C. they find it enjoyable and interesting

D. they might meet fewer troubles in life

73. According to the passage, some doctors believe it is true that _____ .

A. you are healthy if cold-water swimming turns your skin color blue

B. cold-water swimming causes more heart attacks in summer than in winter

C. cold-water swimming can make the body temperature dangerously high

D. Polar Bears are bears swimming in freezing water