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】

试题分析：本文主要讲述了太平洋小国"图瓦卢"由于担心将被海洋吞噬，发出了求助讯号。。

1.小题1】"图瓦卢"由于担心将被海洋吞噬，发出了求助讯号。因此没有紧急救助，"图瓦卢"剩余的日子屈指可数。选C。

2.小题2】下面又介绍另一个国家—威尼斯，在过去100年里下沉海里大约24厘米，因此图瓦卢不是第一个面临下沉到海里危险的国家。选D。

3.小题3】下文讲到人类燃烧煤炭，石油，不断往大气中释放温室气体，因此造成全球变暖。选A。

4.小题4】科学家称，如果全球变暖不改变，海平面还会上升。选E。

5.小题5】海洋会吞噬掉成百万家庭，世界将到处是洪水难民，这会成为现实吗？选B。

考点：环保类文章