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  3. Cancer is the second leading cause of death in the United States, after heart disease. In the past, it was often considered a de

Cancer is the second leading cause of death in the United States, after heart disease. In the past, it was often considered a de

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问题     Cancer is the second leading cause of death in the United States, after heart disease. In the past, it was often considered a death sentence. But many patients now live longer【C1】______of improvements in discovery and treatment.
    Researchers say death【C2】______in the United States from all cancers combined have fallen for thirty years. Survival rates have increased for most of the top fifteen cancers in both men and women, and for cancers in【C3】______.
    The National Cancer Institute and the Centers for Disease Control and Prevention studied the number of cancer survivors. A cancer survivor is defined【C4】______anyone who has been found to have cancer. This would include current patients.
    The study covered the period from 1971 to 2001. The researchers found there are three【C5】______as many cancer survivors today as there were thirty years ago. In 1971, the United States had about threemillion cancer survivors. Today there are about tenmillion.
    The study also found that 64% of adults with cancer can expect to still be【C6】______in five years. Thirty years ago, the five-year survival rate was 50%. The government wants to【C7】______the five-year survival rate to 70% by 2010.
    The risk of cancer increases with age. The report says the majority of survivors are 65 years and older.
    But it says medical improvements have also helped children with cancer live【C8】______longer. Researchers say 80% of children with cancer will survive at least five years after the discovery. About 75% will survive at【C9】______ten years. In the 1970s, the five-year survival rate for children was about 50%. In the 1960s, most children did not survive cancer. Researchers say they expect more improvements in cancer treatment in the future. In fact, they say traditional cancer-prevention programs are not enough anymore. They say public health programs should also aim to support the【C10】______numbers of cancer survivors and their families.
【C7】
选项 A、fix
B、lower
C、study
D、increase
答案D
解析 前一句说三十年前五年存活率为50％，政府想在2010年达到70％，因此应该是提高。选D increase。
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