3．
选择合适的句子填空
|
A. But you can feel it.
B. Do you know anything
about air?
C. Because it can keep
us alive.
D. It also has no smell
or taste.
E. It has no colour or
shape.
|
T=Teacher S=Student
T: Hello, boys and girls. Today
we are going to talk about air.
SI: Yes. I think I know
something about air.
T: You're right.
S2: Excuse me, can we see
it or feel it?
T: You cannot see it.
It is everywhere.
S3: Why is it so important
to us?
T:
Ss: That is amazing. We
should keep the air clean.
