If you like art and enjoy looking at the pictures is an interest.A. whichB. thatC. asD.

问题补充：

If you like art and enjoy looking at the pictures, is an interest.

A. which

B. that

C. as

D. what

答案：

A. which

(答案→)B. that

C. as

D. what

解析：这里that是代词，代替前面句子的内容，是独立的主语。故选B。句意：如果你喜欢艺术和欣赏绘画，那就是兴趣。