— I _____ Fujian Museum twice. How about you?

— Never. I hope to visit it soon. [ ]

A. have gone to

B. have been to

C. have gone

D. have been

用手往墙上按图钉，图钉尖的面积很小，是为了______________对墙的压强，图钉帽的面积比较大是为了______________对手的压强。