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《Using LanguageⅠ》公开课PPT课件优质课下载
Last month I made a _____ into space by _______ with my friend, an _________. I learned much more about ______.
trip
spaceship
astronomer
gravity
On the moon
The change of gravity
In space
hard
No gravity at all
Not as strong as the earth’s
Leave the earth
heavy
weightless
weigh less
Useful words and expressions
the pull of the earth’s gravity
float weightlessly in the spaceship
get closer to
not as strong a pull as the earth’s
weigh less
now that
地球重力的牵引力
不如地球的引力那么强大
在宇宙飞船中失重漂浮