填空题
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
填空题
Early discovery of breast cancer may______.
填空题
Advantages of screening women under 50 are______.
填空题
Delaying the age at which screening starts may______.
填空题
Radiation exposure should be______.