Question

In recent years, temperatures in the polar areas are rising faster than anywhere else on Earth. As a result, the ice and the snow are melting at record-setting rates. One result is that sea levels are rising around the world, putting animals and people at risk.

A sheet of ice acts like a huge mirror, reflecting the sun’s energy. But ocean water, which is darker than ice, absorbs a lot of it. This causes the ocean to warm, which in turn speeds up ice melting and which leads to even more open waters. The cycle continues until all the ice is gone.

“As the ice melts, water flows into the oceans, making them less salty. That, along with warmer water temperatures, can harm the creatures that live in, under, and near the ice,” says zoologist Michael Stoddard. “Cold-adapted animals — including polar bears, foxes, hares, and seals — also need ice for travel and survival.”

“Most species of fish, sea spiders, and many other animals and plants that live in the waters of Antarctica don’t live anywhere else,” Stoddard says. “Many of them have special proteins in their bodies keeping them from freezing to death and have other adaptation to the cold that has yet to be explored.”

Therefore, experts are urging us to reconsider the way we live. The fuels that we burn in cars, power stations, and factories are largely to blame for the carbon dioxide and other greenhouse gases that are trapping overmuch heat in our atmosphere. If we can produce fewer of these gases, we can help save the polar ice. “Even small things would make a difference, if everyone did them.” Michael Stoddard says, “That’s what we have to figure out in the near future to help save the polar ice and thus protect the oceans and us.”

1.The passage is mainly written to _____.

A. introduce the present situation of the polar areas

B. warn people against extreme weather

C. call on people to protect the oceans and humans

D. advertise for volunteers to protect the environment

2.Paragraph 2 mainly tells us about _______.

A. the ice’s functions

B. ocean’s quick growing

C. the cause of sea level rising

D. the ways of more waters

3. From the passage, we can know that _______.

A. most polar animals prefer to live in less salty water

B. some of the cold-adapted animals mainly feed on ice

C. many polar creatures have special proteins to keep alive

D. scientists still don’t know how polar creatures have adapted to the cold

4.Which of the following statements is TRUE?

A. Polar bears are expanding at a high speed.

B. Experts advise people not to use fuels at all.

C. Wildlife worldwide is in the process of dying out.

D. Global warm is putting animals and humans at risk.

 

Answer 1

1.C

2.C

3.D

4.D

【解析】

試題分析: 本文講述近年來極地溫度上升很多快，導致冰山熔化，海平面上升，危險人類與動物的生存，號召人們保護保護海洋，保護人類。

1.C 主旨大意。第一段介紹到最近這些年，極地的溫度上升的很快，導致冰山的熔化，水平的上長，使地球上的人與動物處在很危險的狀態(tài)，最后一段提到Therefore, experts are urging us to reconsider the way we live.因此專家強烈要求我們重新考慮我們的生活方式，保護冰山，故選C項。

2.C 段落大意。第二段講述的時冰山就象一面鏡子，反射太陽的能量，但海水比冰的顏色深，吸收很多的冰水，這導致海洋變暖，反過來加速冰山的熔化，故講述海平面上升的原因，故選C項。

3.D 推斷題。根據(jù)倒數(shù)第二段提到“Many of them have special proteins in their bodies keeping them from freezing to death and have other adaptation to the cold that has yet to be explored許多的生物體內有特殊的蛋白質來使他們不被凍死，但他們如何適應寒冷，還有待于探索，選D項。

4.D 推斷題。A項文中沒有涉及到；根據(jù)最后一段提到Therefore, experts are urging us to reconsider the way we live. The fuels that we burn in cars, power stations, and factories are largely to blame for the carbon dioxide and other greenhouse gases that are trapping overmuch heat in our atmosphere.可知專家建議我們注意我們的生活方式，故B項錯誤；C項提到野生動物正在滅亡，太絕對；根據(jù)第一段提到One result is that sea levels are rising around the world, putting animals and people at risk可知D項正確。

考點：科普類閱讀。