問題詳情

第 45 至 48 題為題組 Does an organic strawberry contain more vitamin C than a conventional one? Maybe — or maybe not.Stanford University scientists have weighed in on the “maybe not” side of the debate after an extensiveexamination of four decades of research comparing organic and conventional foods. Fruits and vegetables labeledorganic were, on average, no more nutritious than their conventional counterparts, which tend to be far lessexpensive. Another finding of the study was that organic produce, over all, contained higher levels of phosphorusthan conventional produce. But because almost everyone gets adequate phosphorus from a wide variety of foods,they said, the higher levels in the organic produce are unlikely to confer any health benefit. All in all, they didn’tfind any nutrition advantage in organic food.The study’s conclusions about pesticides, however, did seem likely to please organic food customers. Overall, the Stanford researchers concluded that 38 percent of conventional produce tested in the studies containeddetectable residues, compared with 7 percent for the organic produce. They also noted a couple of studies thatshowed that children who ate organic produce had fewer pesticide traces in their urine. Similarly, organic meatcontained considerably lower levels of antibiotic-resistant bacteria than conventionally raised animals did, thoughbacteria, antibiotic-resistant or otherwise, would be killed during cooking.People buy organic food for a variety of reasons — concerns about the effects of pesticides on young children,the environmental impact of large-scale conventional farming and the potential public health threat. But if thechoice is based mainly on the hope that organic foods will provide more nutrients, “I would say there is no concreteevidence to choose one or the other,” Dr. Bravata, one of the scientists of the research, said.
45. What is the major argument of this research?
(A) Organic foods do not have any benefits.
(B) Organic foods do not contain more nutrition.
(C) The high price of organic foods is not reasonable.
(D) Consumers should not waste money in buying organic foods.

參考答案

答案：B
難度：簡單0.740741
統計：A(0),B(20),C(5),D(2),E(0)

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