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DDT, the most powerful pesticide the world had ever known, exposed nature’s vulnerability. Unlike most pesticides, which effecti
DDT, the most powerful pesticide the world had ever known, exposed nature’s vulnerability. Unlike most pesticides, which effecti
admin
2020-06-21
55
问题
DDT, the most powerful pesticide the world had ever known, exposed
nature’s vulnerability. Unlike most pesticides, which effectiveness is limited 【M1】______
to destroy one or two types of insects, DDT was capable of killing hun- 【M2】______
dreds of different kinds at once. Developed in 1939, it first distinguished
itself during World War II, cleaning South Pacific islands of malaria- 【M3】______
caused insects for U.S. troops, while in Europe being used as an effective 【M4】______
de-lousing powder. Its inventor was awarded by the Nobel Prize. 【M5】______
When DDT became available for civilian use in 1945, there were only
a few people who expressed the second thoughts about this new miracle 【M6】______
compound. One was nature writer Edwin Way Teale, who warned, ""A spray
as discriminate as DDT can upset the economy of nature as much as a revo- 【M7】______
lution upsets social economy. Ninety percent of all insects are good, but if 【M8】______
they are killed, things go out of kilter right away."" Another was Rachel Car
son, who wrote to the Reader’s Digest to propose an article about series of 【M9】______
tests on DDT being conducted not far from which she lived in Maryland. 【M10】______
The magazine rejected the idea.
【M6】
选项
答案
the — /
解析
短语second thought或second thoughts意为“仔细斟酌,三思”,如:Roberto didn’tgive a second thought to borrowing$2,000 from him.因此,它前面不能加定冠词the。像这种在固定搭配里出现的序数词前面不加the的用法已固定下来,不能随意更改。类似的不加the的短语还有first and foremost。
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0
专业英语八级
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