高考考试

【单选题】PlanetEarth was stricken by floods, drought and fire in 1997, a year which ended with the world’s major polluters quarreling about ways to prevent further environmental disasters.
The climate was dominated in the latter part of the year byE1 Nino, an swelling of warmer water off the SouthAmerican coast which affects global weather patterns. "I think for sure the most dramatic thing has been theE1 Nino phenomenon that has been experienced throughout the tropics," said Jeffrey Sayer, director-general of the InternationalCenter for Forestry Research.E1 Nino is being blamed for widespread floods and drought in the tropics, and has affected other areas as well.
A、major demonstration of the phenomenon was drought-intensified bush fires in Indonesia that spread a smog across large areas of SoutheastAsia before badly-delayed rains started to fall in late November.Apart fromE1 Nino, eastern and centralEurope suffered the worst floods in living memory in early July, with over 100 people killed and many thousands of families displaced through the region.
In the ancient Japanese capital of Kyoto, a UN gathering of 159 countries on global warming finally agreed on cutting greenhouse gas emissions through the next decade after 11 days of confused and uncontrolled negotiations. The conference accepted scientific evidence that heating of theEarth’s surface by gases trapped in the atmosphere causes more and fiercer storms, expanding deserts, melting polar ice and raising sea levels which threaten to flood lowlying islands.
US Vice PresidentA1 Gore called the Kyoto agreement "a vital turning point," but added that more still needed to be done.
This passage mainly talks about ______.
A、global weather patterns B、environmental disasters on earth
C、theE1 Nino phenomenon D、a gathering on global warming
网考网参考答案：B
网考网解析：
[解析] 本题是一道主旨题。很明显，A、D两项与原文内容不符，C项是以偏赅全。文章开头第一句话为本文的关键句。通过理解全文并参照该关键句，可以确定正确答案为B项。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>