2. 考研
  3. It’s easy to scare people about what’s in their food, but the danger is almost never real. And the【C1】______itself kills. Ta

It’s easy to scare people about what’s in their food, but the danger is almost never real. And the【C1】______itself kills. Ta

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问题     It’s easy to scare people about what’s in their food, but the danger is almost never real. And the【C1】______itself kills.
    Take the panic【C2】______genetically modified organisms, or GMOs. Ninety percent of all corn grown in America is genetically modified now. That means it grew from a seed that scientists 【C3】______by playing with its genes. The new genes may make corn grow faster, or they may make it less【C4】______to bugs so farmers can use【C5】______pest-killing chemicals.
    This【C6】______some people. GMOs are "unnatural," they say. A【C7】______from the movie "Seeds of Death" warns that eating GMOs "causes multiple organ system【C8】______."
    Michael Hansen of Consumer Reports sounds almost as【C9】______when he talks about GMOs. He says, "You can’t control【C10】______you’re inserting that genetic information; it can have different effects【C11】______on the location."
    Jon Entine of Genetic Literacy Project responds: "We’ve eaten about 7 trillion meals in the 18 years【C12】______GMOs first came on the market. There’s not one documented instance of someone getting so【C13】______as a cough."
    Given all the fear from【C14】______and activists, you might be surprised to learn that most serious scientists【C15】______with him. "There have been about 2,000 studies," says Entine, and "there is no【C16】______of human harm in a major peer-reviewed journal."
    That might be enough to reassure people if they knew how widespread and familiar GMOs really are—but【C17】______they think of GMOs as something strange and new, they think more tests are needed.
    【C18】______people don’t worry about crops bred in【C19】______varieties for centuries without farmers having any idea exactly what genetic changes【C20】______.
【C12】
选项 A、since
B、as
C、after
D、when
答案A
解析 本句主句的时态为现在完成时(’ve eaten)，其时间状语通常为“since+过去时间”，故选择A项since。
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