______和______是社会丰义精神文明的两个重要方面。
参考答案：思想道德建设 教育科学文化
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
