问题 单项选择题 案例分析题

“保护北极地区的环境,促进该地区在经济、社会和福利方面的持续发展’是北极理事会的宗旨。2013年5月15日,中国、印度、意大利、日本、韩国和新加坡成为理事舍正式观察员国。下图为北冰洋冰面范围变化(含预测)图。回答下列各题。

中国加入北极理事会后,可以()

①共享未来北极航道重要的航运价值

②开发北极地区丰富的油气资源

③在北极科考,气候研究等方面拥有更大的运作空间

④与国际社会携手努力确保北极开发以可持续的方式进行

A.①②③

B.①②④

C.②③④

D.①③④

答案

参考答案:D

解析:

北极的海冰融化,可以每年节约数十亿美元的航运捷径,因此引发新一轮对北极主权的争夺战。北极环境改变,危及当地土著居民的生活和珍稀动物的生存,北极冰雪融化还会使海平面上升,威胁平均海拔较低的国家和地区,而且北极油气资源的开采还会使北极环境遭到进一步破坏。北极理事会对于解决北极资源开采冲突与环境可持续发展的问题有发言权。中国加入北极理事会,主要是为了认识北极、保护北极、促进北极的可持续的发展,绝不是为了满足本国经济利益。

阅读理解

A sandstorm, also known as a dust storm, is exactly what it sounds like. A very strong windstorm especially in the desert carries clouds of sand or dust that greatly reduces visibility. This wind is usually caused by convection currents (对流气流), which are created by intense heating of the ground, and is usually strong enough to move entire sand dunes. Air is unstable when heated, and this instability in the air will cause higher winds to mix with winds in the lower atmosphere, producing strong surface winds.

Sandstorms can disturb people’s travel, and can sometimes destroy whole roads, and dry flat areas. Similar dust storms can be found on the planet Mars, and are thought to be seasonal. Today, the destruction of forests and too much farming of farmland can lead to sandstorms. Too much use of water resources can also cause sandstorms.

In the United States of America, sandstorms are rare because of the lack of large deserts and more importantly the development of proper agricultural techniques. The last recorded destructive sandstorm in American history was the Dust Bowl, which occurred on July 16, 1971 and was widely recorded by meteorologists (气象学家).

To protect themselves from sandstorms, some people wear protective suits. Special equipment can be fixed in some cars to prevent sand from getting into the engine. Sandstorms can cause coughs, and the sand and dust has also been known to carry “infectious diseases”. Sand particles, unlike dust ones, will block air passages, and cause a person who breathes them in to choke. Dust particles may cause an allergic (过敏的) reaction.

小题1:Which of the following plays the first part in forming sandstorms?

A.The instability of the sand.

B.The instability of the wind.

C.The intense heating of the ground.

D.The speed of the wind.小题2:From the second paragraph, we can learn that at present _______.

A.sandstorms are more often seen on Mars than on Earth

B.sandstorms have led to the lack of clean water resources

C.farming brings more harm than benefits to humans

D.human activities are a major cause of sandstorms小题3:The author will most probably agree that ________.

A.there will soon be no sandstorms in the USA

B.humans haven’t thought of any way to deal with sandstorms

C.death caused by sandstorms is increasing all the time

D.humans should make more efforts to stop soil turning into desert

单项选择题