Researchers and many scientists are concerned that the earth's climate and atmosphere are becoming warmer than they should be. What scientists do agree on is that the temperature will continue to increase if measures are not taken to reduce pollution and emission (排放物) from cars and factories.
It is widely agreed that oil and coal create greenhouse gases when they are burned to produce heat or power. These emissions include carbon dioxide, which is the cause of most of the global warming problem. The loss of the trees in many areas is making the problem worse, because trees and plants absorb carbon dioxide and release oxygen. The fewer trees that are left standing, the less carbon dioxide can be absorbed.
Scientists predict that the sea level will rise, ice caps (冰盖) will melt, and some animals and plants will fail to survive because their habitat will disappear. There may be more deserts and less available farmland because of the dry ground, and there may be more storms and floods in many countries.
Some countries, including the UK and the US, are taking steps to prevent the situation from becoming worse. There are programmes to educate citizens and students about the situation and recycling waste is becoming more common. New guidelines are being introduced to try to limit greenhouse gases from being produced by factories and businesses. Using more alternative energy sources is also a good way to prevent global warming.
One thing that everyone can do is limit their use of energy every day, and you can do this no matter how old or young you are. Try to limit the unnecessary use of electricity and work to conserve energy every day.
1．What is the best title for the text?
A. How to Reduce Emissions
B. What Global Warming Brings
C. Take Action to Prevent Global Warming
D. No Emissions, No Warming
答案与解析 C 主旨大意题。文章介绍了全球变暖的原因，带来的后果，以及一些国家开始采取措施抵制全球变暖，最后呼吁人们节能。所以文章重在让人们采取措施抵制全球变暖。
2．________ lead to global warming problems.
A. More greenhouse gases and fewer trees
B. More trees and less carbon dioxide
C. More plants and less oxygen
D. More greenhouse gases and fewer animals
答案与解析 A 细节理解题。由第二段“It is widely agreed that oil and coal create greenhouse gases when they are burned to produce heat or power.”可知变暖原因。
3．Some countries are doing all of the following EXCEPT ________ to prevent global warming.
A. recycling waste
B. limiting guidelines on factories
C. using alternative energy sources
D. offering programmes to educate citizens
答案与解析 B 细节理解题。由第四段“New guidelines are being introduced to try to limit greenhouse gases from being produced by factories and businesses.”可知新的指导方针被引进。
4．What is the author's attitude toward global warming?
A. Concerned. B. Satisfied.
C. Frustrated. D. Puzzled.
答案与解析 A 作者态度题。由最后一段可知作者呼吁人们抵制温室效应而节能减排，所以是“关心的”。
