GRE阅读高频机经原文：寂静的春天_GRE阅读

GRE阅读高频机经原文：寂静的春天

　　But there were dissenters. Norman Borlaug, the 1970 Nobel Peace Prize winner, led the defense of pesticides.Were having troubles now feeding this hungry world, said Borlaug. If you remove DDT with the hysteria that is present in the USA, the U.S. will be importing food, only there wont be any place from where to import it. By 1972, DDT was banned for agricultural use in the U.S. But thousands of new chemicals were being developed. NFor years, the U.S. Senates Committee on the Environment has been trying to ban or control hundreds of chemicals from agricultural products and consumer goods. This committee heard from CDC officials who told us their scientists found 212 industrial chemicals, including six carcinogens, coursing through Americans bodies, said Democratic Senator Frank Lautenberg. In 2006, the World Health Organization announced plans to use DDT again - indoors - in its campaign against malaria. Syngenta is a major producer of agricultural chemicals. Like others in the industry, it says its chemicals are safe if used properly. We try to do every single study that is necessary to support the safety characteristics of the product. said Tim Pastoor, the companys principal scientist. Fifty years after Silent Spring, millions of kilograms of new pesticides and other chemicals are being sprayed across US farmlands. And the environmental movement is still fighting back.