It is often said that man has become the enemy of our planet. This is no exaggeration(夸张), for reports show that man’s greed has done much to destroy the earth. Man, in his greedy desire for financial growth, has polluted the air, land and water, and has robbed our valuable natural resources. Man’s industrial plants pour out poisonous waste that pollutes the sea and puts life in the sea under the threat of dying out; at the same time, they release alarming amounts of carbon dioxide, chlorofluorocarbons (CFCs) and other pollutants. Small wonder that the air now is much warmer and more impure than ever before.
Of course, this is not just because of man’s greed—it is man’s pressing need as well. For instance, in developing countries, huge financial foreign debts have forced governments to approve the cutting of forests for agriculture or ranching. As a result, forests are cut down just to meet man’s immediate needs.
Perhaps unknowingly，man has changed the make-up of the earth's atmosphere. Scientific studies have shown that CFCs used in refrigerators and industrial cleaners are fast destroying the ozone layer—a protective layer in the atmosphere that protects us against the harmful effects of the sun’s ultraviolet (紫外线)rays. In fact, documented reports have shown a terrible fact that there are “holes” in the ozone layer over the Antarctic. And they appear to be expanding.
Faced with these environmental problems, world leaders have shown deep concern. The UN Environmental Programme (UNEP) has arranged international agreements like the Vienna convention of 1985 and the Montreal Protocol of 1989 to preserve the ozone layer by controlling the production, use and trade of destructive chemicals.
There may be some doubt as to how effectual these agreements may be, given that some countries still maintain an “I-don’t-care” attitude. Their attitude is probably due to their failure to grasp the importance of the problem. Then, there is no doubt that environmental education on an international scale（规模）is greatly needed, so that all countries, great and small—the “haves” and the “have nots”—may realize their responsibilities for our planet.
In the meantime, the UNEP seems to have taken steps in the right direction, and it is hoped that in the not so distant future, all nations of the world will join hands in saving mother earth.
小题1:Which of the following is a reason for the cutting and burning of forests?
A．To build houses for more population.
B．To have land for agriculture.
C．To export trees to other countries.
D．To build industrial plants.小题2:The holes in the ozone layer are largely due to________.
A．man’s research activities
B．the greenhouse effect
C．the ultraviolent
D．harmful chemicals小题3:Why don’t some countries care about the problem of the environment?
A．They don’t want to put their lives in danger.
B．They just don’t know how to solve the problem.
C．They haven’t realized the seriousness of the problem.
D．They don’t want to break their international commitment.小题4:66. What is the author’s attitude towards the future of the environment?
A．Hopeful.
B．Unconcerned
C．Doubtful
D．Objective
小题1:B
小题2:D
小题3:C
小题4:A
题目分析：人们常说人类是我们这个星球的敌人，这话并非危言耸听，夸大其辞。人类做了许多破坏地球的事情。诸如：污染空气，土壤，水以及掠夺有价值的资源等等。面对这些环境问题，文章呼吁全世界所有国家联起手来共同来拯救我们的地球。
小题1:B 推理判断题。根据“For instance, in developing countries, huge financial foreign debts have
forced governments to approve the cutting of forests for agriculture or ranching(例如，在发展中国家，巨额外债迫使政府同意砍伐森林来让位给农牧业).”可知B项正确。
小题2:D推理判断题。根据第三段“科学研究表明冰箱使用的氟利昂和工业清洁剂正在快速地
破坏着大气中的臭氧层，一种保护我们免受紫外线的伤害的保护层。记录在案的报告业已表明了这
样的可怕的事实：南极上空的臭氧层已经出现好多ˋ洞ˊ”结合第四段中“...to preserve the ozone layer
by controlling the production, use and trade of destructive chemicals. (通过控制生产，使用，销售破坏
性的化学产品来保护臭氧层)”可知答案D正确。
小题3:C推理判断题。根据倒数第二段中“Their attitude is probably due to their failure to grasp the importance of the problem.(他们<漠不关心>的态度可能基于他们没有认识到这个问题的重要性的缘故)”可以知道答案C正确。
小题4:A推理判断题。根据最后一段“联合国环境时朝着正确的方向迈出了坚实的步伐。有望在不远的将来全世界所有国家联起手来共同来拯救我们的地球”说明作者“对未来环境问题充满着希望。