Which of the following is right for alpha particles？ 查

Which of the following is right for alpha particles？ 查看材料

A.They are the second killers to smoking as cause of lung cancer.

B.They can compensate for the abnormal DNA.

C.High dosage and low dosage of them have the same effect on people"s health.

D.Their effect can"t be found immediately.

请帮忙给出正确答案和分析，谢谢！