A. before the cancer cells spread elsewhere B. the more chances of dying of X-ray radiation he will have C. what is most respons

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问题 A. before the cancer cells spread elsewhere
B. the more chances of dying of X-ray radiation he will have
C. what is most responsible for lung cancer
D. as some people imagine
E. the more chances of getting lung cancer he will have
F. which form of lung cancer is a common one
Routine X-ray chest examination is not so dangerous______.

选项

答案D

解析 第三段第二句提到有的人因怕X射线辐射而不敢进行胸透,但作者在后面又说明了胸透对早期发现肺癌的益处以及熟练的操作人员不会给患者带来多大危害,故不像他们想象的那样可怕。
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