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信息发布者：
They collected Moon rocks to take back to 
the Earth for further research.
Neil Armstrong was presented with the Medal 
of  Freedom.
He was the pride of the whole world.
laboratory
scientist
science
discovery
discover
unknown
known/famous
widely
wide
advantage
disadvantage
development
develop
the whole night
make a great difference in our life
during one's lifetime
admire sb. the most
graduate from college
solve the problem of hunger for many people
be considered (as)…
have many advantages over others
with the invention of…
by hand
in ancient times
get married
be unknown to…
push for the use of X-ray machine
die of/from
happen to
be introduced into
at present
I am leaving for Shanghai tonight.
I was writing an email to Wendy at 7 p. m. 
yesterday.
Many modern inventions have made a great 
difference in our life.
It was brave of him to go to a place that was 
unknown to humans at that time.
That is why I admire him so much.
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