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在40岁以上妇女中询问癌症家族史，并教授乳房自检的方法，这属于：
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More Americans have been leaving these cities than those moving there, and people who move tend to be younger.
Even the New York metro area, … is also getting senescent, with an elderly population nearly equal to that of the young, ranking 15th on our list.
Other metropolitan areas widely celebrated as magnets for the young and hip are also aging rapidly.
Indeed, senior employment has jumped 27% in the last five years while that of younger and middle aged workers has fallen notably.
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