In June of 1836, Nathan Rothschild left London for Frankfurt to attend the wedding of his son Lionel to his niece (Lionel’s cous

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问题     In June of 1836, Nathan Rothschild left London for Frankfurt to attend the wedding of his son Lionel to his niece (Lionel’s cousin Charlotte), and to discuss with his brothers the entry of Nathan’s children into the family business. Nathan was probably the richest man in the world, at least in liquid assets. He could, needless to say, afford whatever he pleased.
    Then 59 years old, Nathan was in good health if somewhat portly, a bundle of energy, untiring in his devotion to work and indomitable of temperament. When he left London, however, he was suffering from an inflammation on his lower back, toward the base of his spine. (A German physician diagnosed it as a boil, but it may have been an abscess.) In spite of medical treatment, this festered and grew painful. No matter: Nathan got up from his sickbed and attended the wedding. Had he been bedridden, the wedding would have been celebrated in the hotel. For all his suffering, Nathan continued to deal with business matters, with his wife taking dictation. Meanwhile the great Dr. Travers was summoned from London, and when he could not cure the problem, a leading German surgeon was called in, presumably to open and clean the wound. Nothing availed; the poison spread; and on 28 July 1836, Nathan died. We are told that the Rothschild pigeon post took the message back to London: He is dead.
    Nathan Rothschild died probably of staphylococcus or streptococcus septicemia—what used to be called blood poisoning. In the absence of more detailed information, it is hard to say whether the boil (abscess) killed him or secondary contamination from the surgeons’ knives. This was before the germ theory existed, hence before any notion of the importance of cleanliness. No bactericides then, much less antibiotics. And so the man who could buy anything died, of a routine infection easily cured today for anyone who could find his way to a doctor or a hospital, even a pharmacy.
    Medicine has made enormous strides since Nathan Rothschild’s time. But better, more efficacious medicine—the treatment of illness and repair of injury—is only part of the story. Much of the increased life expectancy of these years has come from gains in prevention, cleaner living rather than better medicine. Clean water and expeditious waste removal, plus improvements in personal cleanliness, have made all the difference. For a long time the great killer was gastrointestinal infection, transmitted from waste to hands to food to digestive tract; and this unseen but deadly enemy, ever present, was reinforced from time to time by epidemic microbes such as the vibrio of cholera. The best avenue of transmission was the common privy, where contact with wastes was fostered by want of paper for cleaning and lack of washable underclothing. Who lives in unwashed woolens—and woolens do not wash well—will itch and scratch. So hands were dirty, and the great mistake was failure to wash before eating. This was why those religious groups that prescribed washing—the Jews, the Muslims—had lower disease and death rates-, which did not always count to their advantage. People were easily persuaded that if fewer Jews died, it was because they had poisoned Christian wells.
    The answer was found, not in changed religious belief or doctrine, but in industrial innovation. The principal product of the new technology that we know as the Industrial Revolution was cheap, washable cotton; and along with it mass-produced soap made of vegetable oils. For the first time, the common man could afford underwear, once known as body linen because that was the washable fabric that the well-to-do wore next to their skin. He (or she) could wash with soap and even bathe, although too much bathing was seen as a sign of dirtiness. Why would clean people have to wash so often? No matter. Personal hygiene changed drastically, so that commoners of the late 19th and early 20th century often lived cleaner than the kings and queens of a century earlier.
    The third element in the decline of disease and death was better nutrition. This owed much to increases in food supply, even more to better, faster transport. Famines, often the product of local shortages, became rarer; diet grew more varied and richer in animal protein. These changes translated among other things into taller, stronger physiques. This was a much slower process than those medical and hygienic gains that could be instituted from above, in large part because it depended on habit and taste as well as income. As late as World War Ⅰ, the Turks who fought the British expeditionary force at Gallipoli were struck by the difference in height between the steak- and mutton- fed troops from Australia and New Zealand and the stunted youth of British mill towns. And anyone who follows immigrant populations from poor countries into rich will note that the children are taller and better knit than their parents.  
What is the main idea of this passage?

选项 A、The progress of medicine has improved the health of ordinary people to the level of the rich in the 19th century.
B、The industrial revolution reduced disease and death by providing better medicine, washable fabric and richer nutrition.
C、Improvements in medicine, personal hygiene and nutrition together greatly improved people’s health and life expectancy.
D、Our knowledge about diseases and nutrition has greatly improved since the 19th century.

答案C

解析 主旨题。本文从19世纪英国大银行家内森.罗斯柴尔德病死的事例说起,指出由于医疗水平的提高、个人卫生的改进和营养的改善这三个方面因素的共同作用,极大地降低了人们的患病率和死亡率,延长了寿命并提高了健康水平。因此[C]为正确答案。[A]、[B]均与文意不符,第六段第五句提到,营养的改善是一个长期的过程,有赖于人们习惯和口味的改变以及收入的提高,并非单靠工业革命的推动就可以实现;[D]的说法本身正确,但并非本文的中心思想。
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