According to the first paragraph we know centenarians will probablyA．receive a birthday c
专四
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According to the first paragraph, we know centenarians will probably
A．receive a birthday card from the British queen.
B．be called to donate a sample of their DNA for study.
C．be asked to reveal the secret of their longevity.
D．participate in a competition to win big money.
请帮忙给出正确答案和分析，谢谢！
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正确答案：B
事实细节题。根据文章首句，“英国的”百岁老人会收到女王寄出的生日贺卡，[A]以偏概全。第二、三句谈到，将来遗传学家可能会给百岁老人打电话，目的是寻找DNA样本，以便求得长寿的基因秘密，因此百岁老人可能会被要求捐献DNA样本以供研究用，[B]为答案。百岁老人可能会捐赠．DNA样本以便遗传学家研究他们长寿的秘诀，而不是他们自己解开长寿的秘诀，排除[C]。根据文章内容，不是百岁老人参加竞赛，而是theworld’sscientists，排除[D]。