(共20张PPT)
Unit
1
Great
Scientists
Reading
1
Did
you
read
news
recently?
据英国每日邮报2014年8月28日报道,非洲岛国马达加斯加首都塔那那利佛的上空,成千上万只蝗虫日前成群掠过。这团庞大的“黑云”给该国900万农业工作者带来恐慌。
普拉蒂尼接受冰桶挑战
点名昔日队友
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资助10名同学上大学
Spread
from
one
person
to
another.
So
it
is
an
infectious
Disease.
infect/affect
people
It
infects
people’s
intestines(肠道),
causing
diarrhoea(腹泻),
vomiting(呕吐)
and
dehydration(脱水)
Many
deaths
in
African
countries
in
2005
and
even
now
5oo
deaths
in
10
days
in
1854
in
London.
Study
the
title
Who
is
John
Snow?
a
famous
doctor
in
London.
What
happened
to
them?
attended
her
as
her
personal
physician
Fast-reading
Read
the
passage
quickly
and
number
these
events
in
the
order
that
they
happened.
___
John
Snow
began
to
test
two
theories.
___
An
outbreak
of
cholera
hit
London
in
1854.
___
John
Snow
marked
the
deaths
on
a
map.
___
He
announced
that
the
water
carried
the
disease.
___
John
Snow
investigated
two
streets
where
the
outbreak
was
very
severe.
___
King
Cholera
was
defeated.
___
He
found
that
most
of
the
deaths
were
near
a
water
pump.
___
He
had
the
handle
removed
from
water
pump.
2
1
4
7
3
8
5
6
What
is
the
problem?
The
cholera
was
the
most
deadly
disease
of
its
day.
Neither
its
cause,
nor
its
cure
was
understood.
What
caused
cholera?
Details
make
up
a
question:
Which
theory
to
believe
in?
Cholera
multiplied
in
the
air.
A
cloud
of
dangerous
gas
would
float
around
until
it
found
its
victims.
People
absorbed
it
with
their
meals.
A
map
of
Broad
Street
What
method
did
he
use?
Broad
Street
Many
deaths
happened
here.
No
death
happened
here.
The
water
from
the
pump
was
to
blame.
Public
house
analyze
the
results:
What
happened
to
the
pump
water?
The
water
was
from
the
river
which
had
been
polluted
by
the
dirty
water
from
London.
Find
supporting
evidence:
What
extra
evidence
did
he
find?
A
woman
and
her
daughter
who
lived
far
away
but
drank
the
water
also
died.
draw
a
conclusion
with
certainty
The
polluted
water
carried
the
disease.
draw
a
conclusion
find
a
problem
make
up
a
question
think
of
a
method
collect
results
analyse
the
results
find
supporting
evidence
Para
1
Para
2
Para
3
Para
4
Para
5
Para
6
Match
them
Read
the
text
again
and
finish
the
exercise
in
the
exercise
book-----
Jin
Ban
Xue
An.
Post-reading
What
should
we
pay
attention
to
in
our
daily
life
in
order
not
to
get
infected
with
cholera?
Cook
raw
food
thoroughly
Wash
hands
often
Keep
away
from
flies
choose
fresh
sea
food
Keep
the
kitchen
clean
Dispose
rubbish
properly.
Drink
boiled
water
discussion