2. 外语
  3. A. be costly B. harmful C. save a life D. still open to debate E. reduce the risk of radiation triggering a canc

A. be costly B. harmful C. save a life D. still open to debate E. reduce the risk of radiation triggering a canc

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问题     A. be costly
    B. harmful
    C. save a life
    D. still open to debate
    E. reduce the risk of radiation triggering a cancer
    F. reduced to the minimum
Advantages of screening women under 50 are______.
选项
答案E
解析 But they point out that the risk of women contracting cancer from radiation could be reduced by between 40 and 80 percent if screening began at 50 instead of 45，because they would be exposed to less radiation．年龄太晚受到的检测辐射越少。
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