Harrison Ford is thought to be one of the few movie stars as a carpenter before.[ ]

A. to work

B. to be working

C. to have worked

D. to have been working

在“夫彀劲弩者，效力于发箭”中，“彀”之义为（）

A.通"够"

B.一种强弓

C.拉满弓弩

D.准备发射