Question

It was in 1969 ___ the American astronauts first succeeded in landing on the moon.

A．that

B．when

C．which

D．in which

Answer 1

A

考查强调句型。It is... that是强调句型，可以强调除谓语外的任何成分；去掉不影响句意。句意“美国宇航员成功登陆月球是在1969年。”本句强调的是时间状语in 1969。故选A。