男，14岁，舌有时出现刺激痛近1年，检查见舌背有3块光滑的红色剥脱区，微凹陷，直径约

After he ________ the golf club, he has ________ a number of competitions.

A．took part in; taken part in

B．joined; taken part in

C．joined in; joined in

D．joined; joined

A: How often do you exercise?

B: _____.

A. Less than two hours

B. Every day

C. Four times

D. Three to six hours

采用划线更正法时，最后由审核人员在更正处签名盖章，以明确责任。(　)

户外广告的登记机关是（）。

A.各级广告监管部门

B.国家工商总局及其授权的各级工商行政管理部门

C.辖区的市级工商行政管理部门

D.省级工商行政管理部门及其授权的省辖市工商行政部门