Question

【题目】Polar bears depend on ice to hunt (猎取)for food in the Arctic Ocean. They climb up on the ice to look for seals and other animals. But scientists say sea ice is decreasing (减少)because of climate change. They say rising temperatures have reduced the area in which polar bears can hunt.

Recently, a number of studies found that future reductions of sea ice could result in a loss of many polar bears within fifty years. The studies found a direct link between sea ice in the Arctic Ocean and the health of polar bears. The scientists say the animals will disappear from the north coasts of Alaska and Russia in the next fifty years. The only polar bears to survive will be in Canada's far north and the west coast of Greenland.

The scientists found that almost two thirds of the world's nineteen polar bear populations will disappear from the earth by the middle of this century. The studies showed that three more groups of polar bears will disappear within seventy-five years.

Scientists say polar bears still can be saved. But they say the world must begin taking steps to reduce climate change to do this. The center for Biological Diversity says governments around the world need to reduce the release (释放)of pollution like C02 gas.

Scientists say one step toward this goal would be to include polar bears on America's list of endangered species. Then the government would be able to make sure that industrial activities do not threaten their survival. The United States Fish and Wildlife Service is expected to examine the new findings when it considers whether polar bears should be included on the Endangered Species List.

【1】 Which of the following is TRUE according to the passage?

A. The living conditions of the polar bears are improving.

B. Almost two thirds of polar bears will disappear within seventy-five years.

C. The health of polar bears is directly connected with the sea ice.

D. The polar bears mainly feed on sea ice.

【2】 According to the passage, the number of the polar bears is directly decided by ______.

A. the climate change B. the amount of sea ice

C. C02 gas D. industrial activities

【3】 Whether polar bears should be included on America's Endangered Species List or not is decided by ______.

A. the United States Fish and Wildlife Service

B. the Center for Biological Diversity

C. the polar bears themselves

D. American government

【4】 This passage mainly tells us ______ .

A. the relationship between climate change and sea ice in the Arctic Ocean.

B. the influence of the weather change on the polar bears in the Arctic Ocean.

C. one step to save the endangered polar bears.

D. the fact that the number of the polar bears is decreasing.

Answer 1

【答案】【1】 C

【2】 B

【3】 A

【4】 D

【解析】【1】细节理解题。根据第二段 The studies found a direct link between sea ice in the Arctic Ocean and the health of polar bears.可知。

【2】推理判断题。根据第一段可推断出海冰的数量直接决定北极熊的数量。

【3】细节理解题。根据最后一段最后一句可知。

【4】主旨大意题。本文主要告诉我们北极熊的数量在不断减少。