Bombing will also leave its mark beyond the obvious craters. Defence analysts says that while depleted uranium has been used less in Afghanistan that 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.

　　1. All of the following are causes of the environmental crisis in Afghanistan EXCEPT

　　A. American bombing.

　　B. heavy monsoon rains.

　　C. years of lack of rain.

　　D. fighting among the Afghanis.

　　2. According to the passage, the main cause of the loss of the countrys forests is

　　A. the flooding caused by the monsoon rain.

　　B. the intense bombing of the Taliban troops.

　　C. the improper use of the trees for benefits during Taliban rule.

　　D. the fire set to burn the forests by the Taliban troops.

　　3. Most of the migratory bird no longer fly across Afghanistan to Pakistan and India because

　　A. they change their route from time to time.

　　B. some birds have collapsed while flying.

　　C. they have been threatened by the bombs dropped on the country.

　　D. they are scared by the big animals in the mountains.

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