单选题
The Wasteland

A new catastrophe faces Afghanistan. The American bombing campaign is conspiring with years of civil conflict and drought to create an environmental crisis.
Humanitarian and political concerns are dominating the headlines. But they are also masking the disappearance of the country"s once rich habitat and wildlife, which are quietly being crushed by war. The UN is dispatching a team of investigators to the region next month to evaluate the damage. "A healthy environment is a prerequisite for rehabilitation," says Klaus Topfer, head of the UN Environment Programme.
Much of south-east Afghanistan was once lush forest watered by monsoon rains. Forests now cover less than 2 percent of the country. "The worst deforestation occurred during Taliban rule, when its timber mafia denuded forests to sell to Pakistani markets," says Usman Qazi, an environmental consultant based in Quetta, Pakistan. And the intense bombing intended to flush out the last of the Taliban troops is destroying or burning much of what remains.
The refugee crisis is also wrecking the environment, and much damage may be irreversible. Forests and vegetation are being cleared for much-needed farming, but the gains are likely to be only short-term. "Eventually the land will be unfit for even the most basic form of agriculture," warns Hammad Naqi of the World Wide Fund for Nature in Pakistan. Refugees—around 4 million as the last count—are also cutting into forests for firewood.
The hail of bombs falling on Afghanistan is making life particularly hard for the country"s wildlife. Birds such as the pelican and endangered Siberian crane cross eastern Afghanistan as they follow one of the world"s great migratory thoroughfares from Siberia to Pakistan and India. But the number of the birds flying across the region has dropped by a staggering 85 percent. "Cranes are very sensitive and they do not use the route if they see any danger," says Ashiq Ahgmad, an environmental scientist for the WWF in Peshawar, Pakistan, who has tracked the collapse of the birds" migration this winter.
The rugged mountains also usually provide a safe haven for mountain leopards, gazelles, bears and Marco Polo sheep—the world"s largest species. "The same terrain that allows fighters to strike and disappear back into the hills has also historically enabled wild life to survive," says Peter Zahler of the Wildlife Conservation society, based in New York. But he warns they are now under intense pressure from the bombing and invasions of refugees and fighters.
For instance, some refugees are hunting rare snow leopards to buy a safe passage across the border. A single fur can fetch $2,000 on the black market, says Zahler. Only 5,000 or so snow leopards are thought to survive in central Asia and less than 100 in Afghanistan, their numbers already decimated by extensive hunting and smuggling into Pakistan before the conflict. Timber, falcons and medicinal plants are also being smuggled across the border. The Taliban once controlled much of this trade, but the recent power vacuum could exacerbate the problem.
Bombing will also leave its mark beyond the obvious craters. Defence analysts say that while depleted uranium has been used less in Afghanistan than in the Kosovo conflict, conventional explosives will litter the country with pollutants. They contain toxic compounds such as cyclonite, a carcinogen, and rocket propellants contain perchlorates, which damage thyroid glands.
单选题 All of the following are causes of the environmental crisis in Afghanistan EXCEFF ______.
【正确答案】 B
【答案解析】[解析] 文章的第一句讲到阿富汗人面临着新的灾难,随后一句讲到“美国的轰炸行动和持续多年的内乱和旱情一起导致了生态危机”,所以其原因是American bombing campaign (美国的轰炸行动), years of civil conflict (多年内战), years of drought (多年干旱),分别对应A、D、C选项的内容。故B选项“monsoon rains”(季风雨)不是导致生态危机的原因。
单选题 According to the passage, the main cause of the loss of the country"s forests is ______.
【正确答案】 C
【答案解析】[解析] 本题需要注意the main cause(主要原因)。第三段中的The worst deforestation与此对应,该句提到“The worst deforestation occurred during Taliban rule, when its timber mafia denuded forests to sell to Pakistani markets.”(最糟的森林采伐出现在塔利班统治时期,当时它的木材黑手党砍伐森林卖到巴基斯坦的市场上),由此可知造成森林减少的最主要的原因是塔利班统治期间对森林的乱砍滥伐,所以选C。
单选题 Most of the migratory birds no longer fly across Afghanistan to Pakistan and India because ______.
【正确答案】 C
【答案解析】[解析] 文中第五段介绍了候鸟不再从阿富汗飞往巴基斯坦和印度的原因。该段的第一句话就讲到投到阿富汗如冰雹般的炸弹使这个国家的野生动物生活更加困难,随后便以飞过该国的候鸟为例,候鸟数量下降了85%,原因是“Cranes are very sensitive and they do not use the route if they see any danger”,由此可知像鹤这样的候鸟对危险非常敏感,当候鸟群受到过炸弹的惊吓,所以就改道了,C项的内容与此相符。该段最后一句中提到“the collapse of the birds" migration,”讲的是鸟类迁徙的失败,B项中虽出现了collapse这个词,但意思是“一些鸟在飞行途中掉了下来”。
单选题 In which of the following ways do the refugees threaten the survival of such wild animals as the snow leopards?
【正确答案】 C
【答案解析】[解析] 倒数第二段中是以“难民捕猎罕见的雪豹,用钱来换取安全通过边境的机会”为例来印证前一段的最后一句话“...they (mountain leopards, gazelles, bears, etc) are now under intense pressure from the bombing and invasions of refugees and fighters.”(它们现在处在轰炸和难民与战士的入侵的严重压力下),由此可见难民对这些动物的威胁主要是对它们的捕杀,然后出售获利,所以本题的答案是C。
单选题 Which of the following CANNOT be inferred from the last paragraph?
【正确答案】 D
【答案解析】[解析] 最后一段第二句中比较了贫铀弹(depleted uranium)和常规炸弹(conventional explosives),由此可以推断贫铀弹不是常规炸药而且还可以推断出常规炸弹比非常规炸弹对环境的危害小一些,所以A项和C项说法正确;根据该段的第一句话可以推断炸弹带来的破坏不仅仅是几个弹坑,所以B项说法正确;根据本段可知在阿富汗使用的贫铀弹不及科索沃战争使用的多,但不能推断出哪里的死亡人数多,所以本题的答案是D。