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专业八级改错练习第49期

来源:可可英语 编辑:memeyyr   可可英语APP下载 |  可可官方微信:ikekenet

【练习】

DDT, the most powerful pesticide the world had ever known,exposed nature’s vulnerability. Unlike most pesticides, which effect- __1

tiveness is limited to destroy one or two types of insects, DDT is __2

capable of killing hundreds of different kinds at once. Developed in 1939, it first distinguished itself during the World War II, cleaning __3

South Pacific islands of malaria-caused insects for U.S. troops, while __4

in Europe being used as an effective de-lousing power. Its inventor was awarded by the Nobel Prize. __5

When DDT became available for civilian use in 1945, there were only a few people who expressed the second thought about this __6

new miracle compound. One was nature writer Edwin Way Teale,who warned, “A spray as discriminate as DDT can upset the economy __7

of nature of all insects are good, but if they are killed, things __8

go out of kilter right away.” Another was Rachel Carson, who wrote to the Reader’s Digest to propose an article about series of __9

tests on DDT being conducted not far from which she lived in Maryland. __10

重点单词   查看全部解释    
upset [ʌp'set]

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adj. 心烦的,苦恼的,不安的
v. 推翻,

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exposed [iks'pəuzd]

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adj. 暴露的,无掩蔽的,暴露于风雨中的 v. 暴露,

 
capable ['keipəbl]

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adj. 有能力的,足以胜任的,有 ... 倾向的

 
vulnerability [.vʌlnərə'biliti]

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n. 易受攻击,弱点,[计]漏洞

 
miracle ['mirəkl]

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n. 奇迹

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pacific [pə'sifik]

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n. 太平洋
adj. 太平洋的
p

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discriminate [di'skrimineit]

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vt. 区分,区别对待
vi. 辨别,差别对待

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available [ə'veiləbl]

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adj. 可用的,可得到的,有用的,有效的

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pesticide ['pestisaid]

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n. 杀虫剂

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limited ['limitid]

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adj. 有限的,被限制的
动词limit的过

 

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