是托福考题吧?网上写错了,不是tile,是the:
Direct information on the chemical composition of the Moon became available in 1969 (A ) of the first Apollo mission to land on the Moon.
(A) with the return
(B) returning
(C) when returned
(D) and the return
随着1969年最初的阿波罗计划成功登月,人们得到了月亮的化学组成的直接信息.