Question

Tuvalu, a tiny country in the Pacific Ocean, has asked for help as it fears it will be swallowed up by the sea. Storms and huge waves are a constant threat and none of Tuvalu’s nine little islands is more than five meters above sea level. Salt water is already entering the country’s drinking water supply, as well as damaging plants that produce fruit and vegetable. 1.

2. Venice(威尼斯), a historic city in Italy best known for its canals, has sunk about 24 cm over the past 100 years. Experts say that it will have sunk another 20 cm-50 cm by 2050. A century ago, St. Mark’s Square, the lowest point in the city, was flooded about nine times a year. Nowadays, it happens more than 100 times. While Venice is slowly sinking into the mud on which it stands, Tuvalu’s rising sea level is caused by global warming.

The average global temperature has increased by almost 0.5 centigrade degree over the past century; scientists expect it to rise by extra 1-3 degrees over the next 100 years.

Warmer weather makes glaciers(冰川)melt, adding more water to the ocean. The warmer temperatures also make water expand, so it takes up more space, causing the sea level to rise. The sea level has risen about 10 cm-25 cm in the last 100 years.

3.

Through burning coal, oil and gas, people have been increasing the greenhouse gases in the atmosphere, such as CO2. This adds to the power of the greenhouse effect, making the planet even warmer.

Many scientists believe that, if the warming is not stopped, there will be huge climate change. 4.

5. , the sea will swallow up millions of homes and the world will be flooded with "climate refugees" looking for somewhere to live.

A. The main cause of global warming is human pollution.

B. Should this come true

C. Without urgent help, the country’s days are numbered.

D. But Tuvalu is not the first place to face sinking into the sea.

E. The sea level could rise by one meter this century.

F. People face a lot of pollution.

G. Much has been done about our planet.

Answer 1

1.C

2.D

3.A

4.E

5.B

【解析】

試題分析：本文主要講述了太平洋小國"圖瓦盧"由于擔(dān)心將被海洋吞噬，發(fā)出了求助訊號。。

1.小題1】"圖瓦盧"由于擔(dān)心將被海洋吞噬，發(fā)出了求助訊號。因此沒有緊急救助，"圖瓦盧"剩余的日子屈指可數(shù)。選C。

2.小題2】下面又介紹另一個國家—威尼斯，在過去100年里下沉海里大約24厘米，因此圖瓦盧不是第一個面臨下沉到海里危險(xiǎn)的國家。選D。

3.小題3】下文講到人類燃燒煤炭，石油，不斷往大氣中釋放溫室氣體，因此造成全球變暖。選A。

4.小題4】科學(xué)家稱，如果全球變暖不改變，海平面還會上升。選E。

5.小題5】海洋會吞噬掉成百萬家庭，世界將到處是洪水難民，這會成為現(xiàn)實(shí)嗎？選B。

考點(diǎn)：環(huán)保類文章