问答题 It is wise to have an annual physical examination after age 50; earlier if there are risk factors such as polyps or a family history of the disease.
【正确答案】
【答案解析】比较明智的做法是在50岁之后每年进行一次体检。如果有诸如结肠息肉或家族病史之类的危险因素，这种检查则应提前进行。