— I hear there'll be _____ talk on teenage problems next Monday.

— Do you mean _____ talk our teacher asked us to listen to? [ ]

A. a; the

B. a; a

C. the; the

D. the; a

充油高压断路器按其用油量多少分类，有（）。

A.少油断路器

B.无油断路器

C.多油断路器

D.重油断路器