Unit 13 We're trying to save the earth！Period 2 Section A (3a－4c)课件(共24张PPT)

(共24张PPT)
Period 2　Section A (3a－4c)
shark
fin
chain
ecosystem
industry
工业的；产业的
law
律师
transportation
afford
cruel
cruelly
harmful
harm
be harmful to
scientific
science
reusable
reuse
hear of
cut off
no longer
at the top of
the number of
be in danger
take part in
take action
turn off
pay for
not
only
but
also
harmful
to
The
numbers
of
So
far
are
good
for
pay
for
add
up
C
B
C
D
D
be harmful to
吸烟有害健康
C
Watching too much TV is harmful to your eyes.
the numbers of
A
The number of students in our class
许多
A
heard
of
is
harmful
to
does
harm
to
was
in
danger
The
number
of
at
the
top
of
A
B
C
D
C