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Many experts who favor genetically modified foods believe that genetic engineeri
Many experts who favor genetically modified foods believe that genetic engineeri
游客
2023-09-17
24
管理
问题
Many experts who favor genetically modified foods believe that genetic engineering can help to meet the demands of the world’s increasing population. [br] Researches in the wild field evaluating the two most common Bt corn plants showed that the toxin absorbed was too ______.
选项
答案
low
解析
文章在最后一部分谈到了针对两种最常见Bt玉米的实验:According to the agency, however preliminary studies evaluating the two most common Bt corn plants (from Novartis and Monsanto) already indicate that monarch larvae encounter Bt corn pollen on milkweed plants—but at levels too low to he toxic接着又谈美国环保署“估计,即使马利筋叶片上每平方公分有高达150颗的玉米花粉,昆虫食用后也没有明显的危害”。
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