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】______.

【正确答案】 B

【答案解析】解析：第2段提到“转基因食品”的好处，而第3段第2句则讲有些人担忧，认为“转基因食品不是天然的”，由此可推测第2段是对第1段的举例，take在这里应为“以……为例”的意思，此处意为“以人们对转基因的恐惧为例”。panic over．．．表示“对……的恐惧”，因此选B项over。

【正确答案】 B

【答案解析】解析：空格前的This指代上一段所述内容，即转基因农作物种种“非自然的”优势，而本段的unnatural“非天然的”、warns“警告”、causes“引起……问题”则说明了人们对转基因食品的疑虑，故填入的词应含负面义，因此B项upsets“使……不安，心烦”符合上下文语义逻辑。

【正确答案】 A

【答案解析】解析：空格前的almost as…“和……几乎一样”表明本段是顺承上文语义，继续讲述对转基因食品的疑虑，且Mizhael的引言中也含表否定意义的can"t control，据此可推测Michael也认为转基因食品会带来坏处。根据上下文同义复现的scare，fear，panic，upsets等词，可知正确答案应是它们的同类词A项frightening。

【正确答案】 A

【答案解析】解析：空格与activists并列，由此可以知道填入的词语义上应与activists“活跃分子”对应，而activists指上文所提到的对转基因食品感到害怕的那些人，四个选项中，语义上与此对应的只有A项media“媒体”，且正好能指代第3段提到的movie这样的媒体。

【正确答案】 C

【答案解析】解析：空格处所填的动词应与with一起搭配，him指代上段的Jon Entine，而他是支持转基因食品的。而由下旬的no…of human harm“对人类没有伤害”可知，本段仍在讲述对转基因食品的支持，所以上下文的逻辑是同向的，可以推断大多数科学家是"同意"Jon的观点的，故选C项agree。

【正确答案】 A

【答案解析】解析：由选项可知，本题应填入从句引导词。前半句“把转基因看成是奇怪的新鲜事物”是后半句“人们会觉得需要在这方面做更多的试验”的假设条件。因此空格处应填一个表示假设的条件状语从句引导词，A项as long as“如果，一旦”符合要求。

【正确答案】 D

【答案解析】解析：结合前面分析，知道本段首句跟最后一句是对照的，因此they knew how-widespreadand familiar GMOs really are与without farmers having any idea exactly what geneticchanges在意思上也是相对的，故GMOs应与what genetic changes意思相近。GMOs是基因发生了改变的作物，故此处也表示基因“发生”了变化，应选D项occurred“发生”。