英语六级选词填空练习题分享 四六级报名

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　　But a quick look at the facts shows a different picture. First, energy and other natural resources have become more 3 not less so, since the book 'The Limits to Growth' was published in 1972 by a group of scientists. Second, more food is now produced per 4 of the world's population than at any time in history.
　　Fewer people are 5 . Third, although species are indeed becoming extinct, only about 0.7% of them are expected to disappear in the next 50 years, not 25~50%, as has so often been 6 . And finally, most forms of environmental pollution either appear to have been 7 , or are transient - associated with the early stages of industrialization and therefore best cured not by restricting economic growth, but by 8 it.

　　One form of pollution - the release of greenhouse gases that causes global warming - does appear to be a phenomenon that is going to extend well into our future, but its total impact is unlikely to 9 a devastating (令人心神不安的) problem. A bigger problem may well turn out to be an inappropriate response to it.