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】

试题分析: 本文讲述近年来极地温度上升很多快，导致冰山熔化，海平面上升，危险人类与动物的生存，号召人们保护保护海洋，保护人类。

1.C 主旨大意。第一段介绍到最近这些年，极地的温度上升的很快，导致冰山的熔化，水平的上长，使地球上的人与动物处在很危险的状态，最后一段提到Therefore, experts are urging us to reconsider the way we live.因此专家强烈要求我们重新考虑我们的生活方式，保护冰山，故选C项。

2.C 段落大意。第二段讲述的时冰山就象一面镜子，反射太阳的能量，但海水比冰的颜色深，吸收很多的冰水，这导致海洋变暖，反过来加速冰山的熔化，故讲述海平面上升的原因，故选C项。

3.D 推断题。根据倒数第二段提到“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许多的生物体内有特殊的蛋白质来使他们不被冻死，但他们如何适应寒冷，还有待于探索，选D项。

4.D 推断题。A项文中没有涉及到；根据最后一段提到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.可知专家建议我们注意我们的生活方式，故B项错误；C项提到野生动物正在灭亡，太绝对；根据第一段提到One result is that sea levels are rising around the world, putting animals and people at risk可知D项正确。

考点：科普类阅读。