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Passage 210. What is the attitude of the scientists toward the slimming drug? A. Indifferent(冷漠的). B. Exciting. C. Negative(消极的). D. Confident.
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Passage 29. C75 is likely to produce weight-loss effect on humans because _____. A. mice and humans have similar brain structure B. humans are likely to be more lazy than mice C. human’s appetite is regulated through the same pathway as mice’s D. mice and humans use different pathways of appetite control
passage28. The mice taking C75 lose nearly half of their weight on the same amount of food become ______. A. more active B. more lazy C. more aggressive D. more noisy
Passage 27. One of the reasons that the drug helps to lose weight is that ______. A. it helps mice sleep well B. it keeps fatty tissue from growing C. it controls eating D. it prevents overeating
Passage 2Scientists have developed a slimming drug that successfully suppresses appliance and results in a dramatic loss of weight without any apparent ill effects.The drug interferes with appetite control and prevents the build-up of fatty tissue(脂肪组织). Laboratory mice given the drug lost up to a third of their total body weight. Within 20 minutes of being given the drug, called C75, the mice lost interest in eating and survived apparently content on just 10 per cent of the food they would normally eat.As a result, mice taking the drug lost 45 per cent more weight than mice fed the same amount of food, which compensate for the lack of food by becoming more lazy.Scientists, from the Johns Hopkins University in Baltimore, said that C75 is likely to produce a similar effect on humans because appetite control in brain is thought to be based on the same chemical pathways as those in mice.“We are not claiming to have found a fabled (神奇的) weight-loss drug. What we have found, using C75, is a major pathway in the brain that body uses naturally in regulating appetite at least in mice, ” said Francis Kuhajda, a pathologist and senior team member.Questions:6. The newly-developed drug ______. A. controls appetite and causes obvious weight loss B. reduces weight with some ill-effect C. interferes with appetite and builds up fatty tissue D. is still going through laboratory tests
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