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Ma Yun
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What kind of invention is it?
Lead-in
What is it used for?
A. Giving more beautiful haircuts.
B. Making less mess when we cut hair.
C. Giving a nice feeling to our heads.
A Special Machine
Pre-reading
how:
why:
while-reading P1, P2 and P3
what:
who:
when:
It’s a good way to make less mess when we cut hair.
Some special parts were added to a common vacuum.
Rick Hunt
In 1987
Put the sentences into right order.
while-reading P3&P4