题目内容

【题目】In Antarctica, you learn not to take anything for granted. Everything people depend on has to be shipped or flown into the continent. Why? There are no farms on the icy continent. There are certainly no cows, pigs or chickens. As for drinking water, special systems and a great deal of energy are needed to take the salt out of seawater to make it useable.

Then there is the matter of waste. The US Antarctic Program is committed (致力于) to reducing its impact- or footprint--on the Antarctic environment. That means that every bit of garbage a person might produce in a day has to be transported off the continent. That's true whether it's the wrapper from your candy bar, the green beans you didn't want to eat or the paper towels you used to wipe your hands,

McMurdo Station has put into place technology that helps it reduce its footprint. It starts with energy. The US research base has partnered its nearby neighbor, New Zealand's Scott Base, to share energy produced from three large wind turbines. Scott Base gets 100% of its power from wind, says Ron Blevins, manager at a power plant, while the American base gets about 35% of its energy from wind. The much larger US base uses oil-fired generators(发电机) to supply the rest of its energy needs. The waste heat produced by the generators is then used to warm many of its buildings.

The McMurdo base also has a wastewater treatment plant. Yubecca Bragg, an organic farmer, manages the treatment plant. Bragg explains that treatment depends on allowing microorganisms(微生物) to break down the waste until the liquid part of the waste can be safely released into the ocean. Between 150, 000 and 180,000 pounds a year of the remaining solid waste is packed into containers and sent back to the US.

1We can learn from the first paragraph that .

A. farmers have to raise cows in Antarctica

B. people like taking the ships in Antarctica

C. it is not easy to live in Antarctica

D. water in Antarctica is useless at all

2How do people in Antarctica deal with the solid garbage?

A. They have it taken away later. B. They wrap it in the paper towels.

C. They ignore it completely. D. They keep it in the dustbins.

3It can be inferred from Ron Blevins’ words that .

A. the US base gets its most energy from wind

B. the US base doesn't need too much energy

C. Scott Base tries to remove its footprint

D. New Zealand's technology is advanced

4Which of the following is harmful to the environment of Antarctica?

A. The large wind turbine. B. An oil-fired generator.

C. A wastewater treatment plant. D. Scott Base's power plant.

【答案】

1C

2A

3C

4B

【解析】本文是一篇说明文,叙述南极洲的生存环境以及生活情况,反映了在南极洲生存的不易。

1C

段落大意题。根据第一段第一、二句In Antarctica, you learn not to take anything for granted. Everything people depend on has to be shipped or flown into the continent.在南极洲你要学会不要想当然,因为人们赖以生存的一切都必须用船或飞机运过来根据本段下文的详细介绍可知在南极洲生存是不容易的。故选C。

2A

细节理解题。根据最后一段最后一句Between 150, 000 and 180,000 pounds a year of the remaining solid waste is packed into containers and sent back to the US.可知后来他们把固体垃圾运走。故选A。

3C

推理判断题。根据第三段前三句McMurdo Station has put into place technology that helps it reduce its footprint. It starts with energy. The US research base has partnered its nearby neighbor, New Zealand's Scott Base, to share energy produced from three large wind turbines.可知Scott Base试图消除它的足迹故选C。

4B

推理判断题。根据第三段最后两句The much larger US base uses oil-fired generators(发电机) to supply the rest of its energy needs. The waste heat produced by the generators is then used to warm many of its buildings.可知An oil-fired generator南极洲的环境有害。故选B。

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【题目】Sharks have lived in the world's oceans for millions of years. A shark has an extremely good sense of smell. It can find small amounts of substances in the water, such as blood, body liquids and chemicals produced by animals. These powerful senses help them find their food. 【1】

Sharks grow slowly. About forty percent of the different kinds of sharks lay eggs. 2 Some sharks carry their young inside their bodies as humans do. Some sharks are not able to reproduce until they are twenty years old. Most reproduce only every two years. And they give birth to fewer than ten young sharks. For this reason, over-fishing of sharks is of special danger to the future of the animal.

3 .They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in the ocean do not become too great. This protects the plants and other forms of life that exist in the oceans.

People hunt sharks for sport, food, medicine and their skin. Experts say the international market for some kinds of sharks has increased greatly because many parts of a shark are valuable. 4 . Shark liver oil is a popular source of Vitamin. The skin of a shark can be used like leather. In Asia, people enjoy a kind of soup made from shark fins. Experts say a fisherman can earn a lot of money for even one kilogram of shark fins.

Sharks are among the oldest animals on Earth. 5 If too many sharks in one area are killed, the group of shark may never return to normal population levels

A. The others give birth to live young.

B. Sharks are important for the health of the world's oceans.

C. This is a threat to other form of life in the ocean.

D. Collectors pay thousands of dollars for the jaws of a shark.

E. Sharks are valuable to us and we can make full use of them.

F. But some sharks are in danger of disappearing from Earth.

G. Sharks eat fish, other sharks, and plants that live in the ocean

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