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  3. Including a few bites of meat in the diets of poor children from developing countries improves both their health and their perfo

Including a few bites of meat in the diets of poor children from developing countries improves both their health and their perfo

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问题     Including a few bites of meat in the diets of poor children from developing countries improves both their health and their performance in mental tests, according to reports presented at this year’s annual meeting of the American Association for the Advancement of Science.
    In one study from rural Kenya,【C1】______found that children who ate【C2】______ounces of meat every day, along with their lunch of corn and beans,【C3】______better in problem-solving tests【C4】______children given supplements of milk or vegetable oil. This small【C5】______of meat gave children all their daily needs【C6】______vitamin B12, 68 percent of all they needed of zinc, and 26 percent of their daily iron【C7】______, the researchers noted.
    Dr. Howarth Bouis of the International Food Policy Research Institute in Washington D. C, told Reuters Health that research【C8】______children who don’t get enough iron, zinc and other【C9】______have a weakened immune system,【C10】______growth and cognitive impairments. And when entire generations of children aren’t getting enough nutrients,【C11】______can have implications nationwide, Bouis added.【C12】______, the World Bank estimates that micronutrient deficiencies【C13】______South Asia 5 percent of its GDP each year, he said. "When you can’t work【C14】______hard, you can’t think as well. It【C15】______from economic development, " Bouis said.
    He added that children in【C16】______countries don’t get enough nutrients【C17】______they can’t afford them, so it’s up to the government to【C18】______. For instance, the government could【C19】______programs that increase production of nutrient-rich foods, which【C20】______down the price, Bouis suggested.
【C13】
选项 A、spend
B、cost
C、consume
D、waste
答案B
解析 空格处缺少从句中的谓语动词，从句主语micronutrient deficiencies；宾语South Asia 5 percent ofits GDP each year。分析四个选项：[A]spend“花费，用尽，竭尽”，主语常常是人；[B]cost“令遭损失；使失去”，主语是物，通常含有“导致失去、受苦，招致重大损失”的意思；[C]consume“消费”为直接使用而购买；[D]waste“浪费”，指不考虑地或不仔细地使用、消费、花费或开销。依照题意：营养元素的缺乏使南亚国家的国内生产总值遭受到了5％的损失，只有[B]cost有招致重大损失的意思，符合题意。
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