问题
选择题
In 1969 ____took his biggest step away from the earth. Americans first walked on the moon.This is certainly just a ____thought.
A．he,moving
B．people ,surprising
C．an astronaut, interesting
D．man ,beginning
答案
答案：D
第一空填men是人类，第二空填beginning，指最初的，句意是：在1969名人类迈出了远离地球最大的一步。美国人第一次在月球上行走。这当然是只是一个最初的想法。