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
填空题
Routine X-ray chest examination is not so dangerous______.
填空题
A primary lung cancer patient may be cured by removing the lung completely______.