I have been searching for a painting to decorate my room, but ________ seems really difficult for me to find ________ I like.

A．that; one

B．it; it

C．that; it

D．it; one

下列哪项与分子筛脱水深度无关（）

A、再生后分子筛中的水含量

B、再生温度

C、用于再生的气流的露点

D、吸附周期