4. Which of the following can NOT be called recycling?

　 A. Making new paper from used paper.

　 B. Using worn-out rubber tires to make new ones.

　 C. Burying metal cans and glass bottles.

　 D. Producing new steel from metal in broken cars.

答案：C　 指导：从"recycling”字面理解为循环再利用，即将一种东 西制为新的东西再加利用。其余三个选项全符合，但选项C只是把金属罐、玻璃瓶埋在地下，并不能产生新的可再利用的东西。

3. A big problem of solid waste disposal is that________.

　 A. solid wastes are poisonous

　 B. it is difficult to find places to dispose of solid wastes

　 C. the disposal process is too backward

　 D. we don't have enough manpower to dispose of solid wastes

答案：B　 指导：根据第三段最后一句话，“找地方来处理固体废物是个大问题。”

2. According to the passage, recycling paper is important because________.

　 A. better paper sacks can be made out of waste paper

　 B. the prices of new paper are very high

　 C. trees are no longer available in the developed countries

　 D. more trees on earth can be saved

答案：D　 指导：根据第二段最后一句话，“纸的再生可以减少每年 树木的砍伐”。

4. How did the "dig"affect the life on the farm?

　 A. It reduced milk production.

　 B. It prevented Polly from attending class.

　 C. It attracted more farmers to the potato fields.

　 D. It brought the farmers wealth overnight

答案：A　 指导：倒数第三段中，“Her father said their cows produced less mild”说明了“挖掘”造成了奶牛少产奶。

Passage 18

Recycling Resources

　　　 Increased population increases the need for natural resources and also increases waste products. Making a new useful product out of a waste product decreases (减少) our need for natural resources. Recycling means using something over again after it has been used once.

　　　 Have you ever seen a piece of recycled paper? About one third of all the paper products made each year are made from waste paper. For example, recycled paper is usually used to make paper sacks. Recycling paper, such as newspapers, re- duces the number of trees that must be cut each year to make new paper.

　　　 Each person wastes a lot of solid waste. In the United States, the average is eight kilograms of waste per person each day. Most of the waste is garbage and rubbish. Finding places to dispose (处理) of solid wastes is a major problem.

　　　 In many cities solid wastes are collected and the rubbish is burned in incinerator plants (焚化厂). Air pollution control devices' are used to prevent pollution.　 Heat produced in the burning may be used to generate electricity. Waste that is not burned is taken to a dump. One kind of dump for the disposal of solid wastes is a sanitary landfill (废渣处理法). This method involves (包含) burying the wastes and bulldozing (平整) soil over them. Parks, baseball fields, airports, and other developments may be built on completely filled landfills.

　　 Recycling solid wastes decreases our need for methods of disposal. The metal in broken cars can be recycled and made into new steel Worn-out rubber tires can be turned into new ones and used again. Plastics and other rubber products can be recycled. Metal cans and glass bottles can also be recycled. Increased recycling can help meet the increased demand for natural resources.　　

　　 By recycling resources, people imitate (模仿) nature. Elements important to life are naturally recycled. Nothing lasts forever. Wood decays (腐烂) ,iron rusts (生锈), and concrete (混凝土) is worn away by wind and rain. All natural resources used by people eventually (最终) go hack into the air, water, and earth. 1. What is the main cause of the increased waste according to the passage?

　 A. Expansion of cities.

　 B. Development of the paper-making industry.

　 C. Increased population.

　 D. Lack of recycling methods.

答案：C　 指导：根据文章的第一名话，人口的增长增加了废弃物。因此，这是导致废弃物。增多因此，这是导致废弃的增多的 一个主要原因。

3. Why did the findings cause great excitement?

　 A. Because the coin was priceless.

　 B. Because an ancient Roman site was discovered.

　 C. Because few old coins had been found since the war.

　 D. Because such old coins had been found in American airbases.

答案：B　 指导：这个发现引起人们激动的原因是他们发现了古罗马的遗迹。

2. When Polly was looking for potatoes, her attention first is________.

　 A. a part of leaf　　　　　　　　 B. an old coin

　 C. a piece of pavement　　　　　　 D. a button

答案：C　 指导：细节题。第二段“She scraped the soilaway．．．to be a piece Of pavement”．说明Polly注意到有一条铺路石。

1. There were still potatoes in the field because the pickers

　 A. had left them for Polly on purpose

　 B. thought they were too small

　 C. would pick them later

　 D. had failed to notice them

答案：D指导；这是一道细节题，第二段“Polly wandered over．．．missed．”告诉我们，地里仍然有土豆的原因是人们没有注意到这些土豆丢失在地里。

4. You are advised to rise with a yawn and stretch because it　 will________.

　 A. help to keep your energy for the day's work

　 B. help you to control your temper early in the day

　 C. enable you to concentrate on your routine work

　 D. keep your energy cycle under control all day

答案：A　 指导：第四段第一句话说，慢点起床可节省能量。

Passage 17

　　　 Polly Jones lived on a farm. She had lived mere all her life, all twelve years of it. Her father, who managed the farm, had just lifted the potato crop. Prices were high: he wanted to sell the crop as quickly as he could.

　　 Polly wandered over the rough field looking for the smaller potatoes that the pickers had accidentally missed. She found one, then another, then a handful.　 She was pleased. They were delicious once cooked. Then she caught sight of something else. It looked like a piece of coloured stone. Polly picked it up and thought bow pretty it was. She could see a pattern on it: a picture of a fish and a part of a leaf. She scraped (擦去) the soil away around her feet and found that she was standing on what seemed to be a piece of pavement (铺路石). Stuck to another piece of stone was something small and round like a button. She realized it was an old coin.

　　 The field was busy the next morning though not with potato pickers. In front o{ the house where the farm machinery usually stood were several cars and a police van. A group of distinguished-looking men and women had appeared the morning after her father's telephone call. The local television station had shown some pictures of the field with Polly pointing to the place where she had found her pavement. It was proving to be of Roman origin and was being described as the most exciting thing that had happened in the area since the end of the Second World War. In those days an American airhase had occupied the site of the potato field.

　　 A week later about forty students arrived from the local university. That afternoon a truck with equipment arrived. The excavation (挖掘) was officially under way. Permission had been given and the "dig" as it was called, was expected to last several months. Polly wondered how the everyday work of the farm would get done with so many strange people around and cars coining and going all day long. All the unusual activity had made the cows and sheep restless. Her father said their cows produced less milk.

　　　 Still, it was interesting and great fun. They had let her

　keep the gold coin.

From then on, Polly would walk carefully over potato fields.

3. If one wants to work more efficiently at his low point in the morning, he should________.

　 A. change his energy cycle

　 B. overcome his laziness

　 C. get up earlier than usual

　 D. go to bed earlier

答案：C　 指导：第三段最后一句话给出答案。早起有助于你在精力低落时仍然高效工作。

2. Which of the following may lead to family quarrels according to the passage?

　 A. Unwareness of energy cycles.

　 B. Familiar monologues.

　 C. A change in a family member's energy cycle.

　 D. Attempts to control the energy cycle of other family members.

答案：A指导：第二段最后一句话说“当夫妻意识到什么是能量循环以及每个家庭成员的循环状况时，他们就会停止吵架。”