— What a beautiful skirt you are dressed in today! Where did you buy it?

— ______ ; I bought it in Beijing.

A．Not beautiful at all

B．Don’t mention it

C．It is very kind of you to say so

D．You’re welcome

国外关于强夯法的适用范围，有比较一致的看法，强夯法适用于塑性指数不大于多少的土？

A．8

B．9

C．10

D．11