男性，45岁，因进食时胸骨后不适感1周来院就诊。各项检查皆无阳性发现后，询问食管肿瘤的预防保健，下列措施中不适宜的是（）

A.减少对食管的不良刺激，注意饮食习惯

B.注意口腔卫生

C.戒烟

D.1个月一次食管镜检

E.食管脱落细胞普查

—Peter told me he wanted to come with us. Is it OK for you?

—I don't mind______ he pays for his meals.[ ]

A. as far as          

B. as well as        

C. as long as        

D. as soon as