内容正文:
Unit 1 When was it invented?
Section A(1a~2d)
website
pioneer
listed
widely
pleasure
style
daily
mentioned
cutting
heels
with
for
by
in
before
with
in
until
a
such
have a point
such a great
so great an
was invented by
thought of
at that time
became popular
Unit 1 When was it invented?
Section A(3a~4c)
smell
fridge
remained/stayed
boil
trade
boiling
accidental
musical
instruments
bells
rang
cookies
rulers
low
earthquake
Somebody
locked
biscuit
All of a sudden
by accident
It is said that
Without doubt
taken place
fell into
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