复合题 Directions: There are two passages in this section. Each passage is followed by some questions. For each of them there are four choices marked A. B. C. and D. You should choose the best answer and write it down on your Answer Sheet. (2 points for each question) 

Passage One 

Agriculture has fueled the eruption of human civilization. Efficiently raised, affordable crops and livestock feed our growing population, and hunger has largely been eliminated from the developed world as a result. Yet there are reasons to believe that we are beginning to lose control of our great agricultural machine. The security of our food supply is at risk in ways more harmful than anyone had feared. 

Orchards in Florida and California are falling to fast- moving diseases with no known cure. And as entomologists Diana Cos-Foster and Dennis van Engelsdorp describe in “Saving the Honey bee, ” a mysterious disease has killed honeybee colonies around the U. S. , threatening an agricultural system that is utterly dependent on bees to pollinate crops. The illness may be in part the result of the stresses imposed on bees by this uniquely modern system. 

Now, new evidence indicates that our agricultural practices are leading directly to the spread of human disease. Much has been made in recent years of MRSA, an antibiotic-resistant bacteria, MRSA infections caused the deaths of nearly 19, 000 Americans. The disease first developed in hospitals. The killer bacterium is an inevitable evolutionary response to the wide-spread use of antibiotics but has since found a home in locker rooms, prisons and child care facilities. Now the bacteria have spread to the farm. 

Perhaps we should not be surprised. Modem factory farms keep so many animals in such a small space that the animals must be given low doses of antibiotics to shield them from the terrible conditions. The drug-resistant bacteria that emerge have now entered our food supply. The first study to investigate farm-bred MRSA in the U. S. — amazingly, the Food and Drug Administration has shown little interest in testing the nation’ s livestock for this disease—recently found that 49% of pigs and 45% of pig workers in the survey harbored the bacteria. 

In April 2008, a high-profile commission of scientists, farmers, doctors and veterinarians recommended that the FDA phase out the non-therapeutic use of antibiotics in farm animal production. The FDA agreed and soon announced that it would ban the use of one widespread antibiotic except for strictly stated medical purposes. But five days before the ban was set to take effect, the agency quietly reversed its position. Although no official reason was given, the opposition of the powerful farm lobby is widely thought to have played a role. 

This is just one example of a food production system that protects a narrow set of interests over the nation’ s public health. Simple measures such as the reestablishment of the FDA’ s initial ruling are necessary and important steps. But Congress needs to take a far more comprehensive approach to adjust the country’ s agricultural priorities with its health priorities, to eliminate subsidies that encourage factory farming, and to encourage the growth of polyculture and good old-fashioned crop rotation in the U. S. As the world is quickly learning, a civilization can only be as healthy as its food supply. 

单选题 According to the first two paragraphs, the agricultural system _____.
【正确答案】 C
【答案解析】本题为段落大意题。第一段概述了农业的积极作用,但人类对现代技术的失控,使食品安全受到前所未有的威胁。第二段介绍了现代农业对果园和蜜蜂的消极影响。这些都说明农业比以前更容易遭受破坏,故选C。根据文意,A、B错误,D选项范围太大,故不选。
单选题 Which of the following statements about MRSA is true?
【正确答案】 D
【答案解析】本题为细节理解题。第三段表明,MRSA是一种耐抗生素细菌,是人类泛滥使用抗生素的结果,首次被发现于医院,之后相继在更衣室、监狱、儿童保育设施以及农场发现,这些场所有一个共同点就是,它们都是一个相对狭窄的空间,故A、B、C错误,选D。
单选题 The author’ s attitude to FDA is one of _____.
【正确答案】 D
【答案解析】本题为作者观点题。作者在最后一段提出解决以上问题的措施,第二句指出重新树立FDA的管制地位是非常必要的。这说明作者非常支持FDA,故选D。
单选题 The author believes that, to strengthen the public health, the Congress should _____.
【正确答案】 D
【答案解析】本题为细节理解题。最后一段提出国会在农业问题上应当以健康为首位,去除对农业工业化的补助,鼓励混养和优良的传统的轮作制度,A、B、C都未提到,故选D。
单选题 The passage is mainly about _____.
【正确答案】 C
【答案解析】本题为主旨大意题。食品安全问题不是由不景气的农业造成的,而是现代农业模式造成的,A错误。MRSA是滥用抗生素的结果,但不是全文都在讲MRSA的危害,故B错误。这篇文章主要讲了现代农业的缺点,其优点只在第一段简单提了下,故D错误。整篇文章虽然讲的是现代农业的缺点,但是其中着重提到的是抗生素滥用的危害,故选C。