阅读理解 Passage 1 　　Questions 1 to 5 are based on the following passage: 　　Babies who are breast-fed may be more likely to be successful in life, a new study published Tuesday suggests. The study followed more than 3,000 babies into adulthood in Brazil. The researchers found those who were breast-fed scored slightly higher in intelligence tests in their 30s, stayed in school longer and earned more money than those who were given formula（配方奶粉）. 　　“Breast-feeding not only has short-term benefits, but also breast-feeding has long-term benefits, "says Bernardo Lessa Horta of the Federal University of Pelotas in Brazil, who led the study being published in The Lancet Global Health. 　　(76) Doctors have long known that breast-feeding can be good for a baby's health. This is especially true in poor countries, where water can be contaminated. For instance, a baby given formula in developing countries is 14 times more likely to die in the first six months than one who's breast-fed. In the U.S., some research has suggested that breast-feeding may raise a baby's IQ（智商）by a few points. But a recent study with siblings（兄弟姐妹）found little advantage to breast-feeding. 　　Horta says these previous studies didn't follow children into adulthood to see if breast-feeding had long-term effects. So Horta analyzed data collected from 3,493 volunteers he and his colleagues have been following since birth. They are now in their 30s. First, the researchers gave the subjects IQ tests. Those who were breast-fed for 12 months or more had IQ test scores that were 3.76 points higher than those who were breast-fed for less than one month, the team found. 　　When Horta and his colleagues looked at how much education the subjects had gotten and how much money they were making, they also found a clear difference: Those who were breast-fed the longest stayed in school for about an extra year and had monthly salaries that were about a third higher.

单选题 From the passage, we learn that Horta_______________ .

【正确答案】 A

【答案解析】[解析] 第二段“...says Bernardo Lessa Horta of the Federal University of Pelotas in Brazil...”。细节题。题干问的是“从全文来看，我们了解到奥尔塔什么?”根据定位句“巴西佩洛塔斯联邦大学的贝尔纳多莱萨奥尔塔说…”很显然奥尔塔是巴西人。而其他选项在文中都未提及。故选A。

单选题 Which of the following about those who were breast-fed is NOT mentioned?

【正确答案】 B

【答案解析】[解析] 第一段最后一句话“The researchers found those who were breast-fed scored slightly higher in intelligence tests in their 30s, stayed in school longer and earned more money than those who were given formula. ”。细节题。题干问的是“以下关于母乳喂养的人没有提到的是?”根据定位句“研究人员发现那些用母乳喂养的人在30岁时的智商测试中能轻易地取得高分，且要比那些用配方奶粉喂养的人留校时间更长，挣钱更多”。A、C、D项均有提及，只有B项没有提到。故选B。

单选题 Which of the following is TRUE?

【正确答案】 C

【答案解析】[解析] 倒数第二段第二、三句话“So Horta analyzed data collected from 3,493 volunteers he and his colleagues have been following since birth. They are now in their 30s. ”。细节理解题。题干问的是“下列哪一个选项是正确的?”根据定位句“所以奥尔塔分析3493名志愿者，他和他的同事们一直在收集他们出生以来的数据。他们现在是30岁。”C项说：“他的项目持续了大约有30年之久”。故选C项。根据第三段第一句“Doctors have long known that breast-feeding can be good for a baby"s health. ”，故A项错误。B项扭曲文章意思，文章第三段第二句：“This is especially true in poor countries, where water can be contaminated. ”故排除B项。D项文中未提及。故选C。

单选题 The word contaminated in Paragraph 3 is closest in meaning to____.

【正确答案】 D

【答案解析】[解析] 文中第三段第二句“This is especially true in poor countries, where water can be contaminated. ”。词义猜测题。题干问的是“与‘contaminated’意思最贴切的是?”根据定位句“在一个水污染的贫穷国家里，这显得尤为正确”。A项“完成的”；B项“有兴趣的”；C项“清楚的”；D项“污染的”。故选D。