Forthousandsofyearspeoplecommunicated___littlemorethanwords,stonetablets,andsmokesignals.
A.to use B.used C.use D.using正确答案D
Forthousandsofyearspeoplecommunicated___littlemorethanwords,stonetablets,andsmokesignals.
A.to use B.used C.use D.using正确答案D