I. Getting started

1. What do you know about the moon?

2. Do you think a flag can fly on the moon? Why?

II. Vocabulary in use

glue  v. 粘合

用法：glue A to/onto B 把A粘到B上；glue sth together 把某物粘在一起。glue作为名词，表示“胶水，胶”，glue stick 胶棒。