题目内容
43. The mice taking C75 lose nearly half of their weight on the same amount of food become ____.
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42. One of the reasons that the drug helps to lose weight is that ____.
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:41. The newly-developed drug ____.
40. It can be inferred from the passage that shy people ____.
39. Which of the following statements is true according to the passage? ____
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