2. 外语
  3. It’s said very few children survived cancer before the 1970s.【B1】______ treatments now show hops of long-term survival for almos

It’s said very few children survived cancer before the 1970s.【B1】______ treatments now show hops of long-term survival for almos

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问题      It’s said very few children survived cancer before the 1970s.【B1】______ treatments now show hops of long-term survival for almost eighty percent of young cancer patients. Yet the chemical drugs and radiation【B2】______ to cure their cancers can cause other problems later.
    A newly reported study【B3】 ______ more than 12,000 grown-ups who【B4】______ childhood cancers. Their average age at the time of the study was twenty-eight.
    The researchers found that sixty-two percent of the cancer survivors had at least one【B5】______   health problem. And they were eight times as likely as their sisters or brothers to【B6】______   life-threatening conditions, because chemical drugs can damage bone growth during an important period of【B7】______ and radiation for some cancers can【B8】______ the risk of other cancers later.
    Survivors of bone cancers, and cancers of the central nervous system were at highest risk for health problems as adults.【B9】______ .
    Doctors say newer cancer treatments are a little safer but not much. Still,【B10】______  
    According to the author of the study, doctors should watch closely for problems as childhood cancer survivors get older, He says【B11】______ . And he says it is especially important for survivors to eat right, exercise and not smoke.
【B1】
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答案Improved
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