B．They have settled their environmental problems.

　　C．They have lowered their CO levels in forty cities.

　　D．They have reduced pollution through effective measures.

　　答案：D 　细节判断题。由第三段中“...emissions (排放)from cars and trucks have dropped from 10.3 million tons a year to 5.5 tons.”可知A项中的“把汽车排放降到最低”错误；再结合第二句可知，C项错误；由“Although serious problems still remain and need to be dealt with, the world is a safer and healthier place”可知B项错误D项正确。

　　8．What is especially important for environmental protection according to the last paragraph?

　　A．Education.

　　B．Planning.

　　C．Green living. D．CO reduction.

　　答案：A　主旨大意题。文章最后一段讲述了教育对于环保的意义，并且最后Anderson说的话“Until we do that, nothing else will change! ”可知答案选A。

　　Ⅳ.短文填空

　　根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

　　__1__ Scientists and experts have proved the uniqueness of finger­prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.

　　The ridge (隆起) structure on a person's fingers does not change with growth and is not affected by surface injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original pattern. __2__ Some criminals make use of this fact to remove their own finger­prints but this is a dangerous and rare step to take.

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