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__
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