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  3. Lance Armstrong is thirty-three years old and is one of the best athletes in the world. Scientists say his body operates better

Lance Armstrong is thirty-three years old and is one of the best athletes in the world. Scientists say his body operates better

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问题     Lance Armstrong is thirty-three years old and is one of the best athletes in the world. Scientists say his body operates better than the【S1】______person. For example, his heart can【S2】______more than two hundred times a minute. It pumps an extremely large amount of blood and oxygen to his legs.
    Edward Coyle, head of the Human Performance Laboratory at the University of Texas in Aus tin, tested Armstrong five times from 1992 until 1995. Each time, the cyclist rode a【S3】______bike for twenty-five minutes with the work rate increasing every five minutes.
    Scientists measured Armstrong’ s【S4】______against the amount of oxygen he breathed. Doctor Coyle discovered an 8% increase in Armstrong’s muscle power. Doctor Coyle【S5】______Armstrong might have developed more of a certain kind of muscle during his seven years of training.
    Doctor Coyle also discovered that Armstrong was able to reduce his body weight and body fat before his Tour de France victories. This enabled him to increase his power in relation to his body weight by 18%. Doctor Coyle says the results of the【S6】______show that long-term training has more of an effect on athletes than scientists thought.
    Lance Armstrong is【S7】______in another way. In 1996, when he was twenty-five, he discovered he had cancer of the testicles(睾丸), which had spread to his lungs and brain. Armstrong received chemical【S8】______and several operations on his brain. After he【S9】______, he began training a gain in 1998. The next year he won his first Tour de France race. Many people who have【S10】______and are living with cancer believe he is a hero.

A)bite                                         I)performance
B)study                                        J)recovered
C)average                                      K)fixed
D)suspected                                    L)departed
E)exercise                                     M)frequent
F)beat                                         N)treatment
G)unique                                       O)breakthrough
H)survived
【S5】
选项
答案D
解析 根据句子结构分析可知此处需要填入一个动词作句子的谓语，而且应该是过去时态，选择范围缩小到D，H，J，L，根据下文might have developed．．．of training可知Doctor Coyle其实并不十分肯定，是猜想，故答案为D。
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