求带PPT 的英语演讲稿，三分钟左右，最好有趣点的

Answer 1

【1】At
the
Lesson
of
Geography（在地理课上）A
teacher
put
his
finger
on
some
place
on
the
map
and
said:“What
is
this,
John?”John
got
up
and
said:
“Your
forefinger．”
老师用手指在地图上指着某一个地方，说：“约翰，这是什么呀？”约翰站起身来，说：“是你的食指。”
【2】At
the
Lesson
of
Physics（在物理课上）Teacher:
Explain,
please,
the
effect
of
cold
and
heatand
give
examples．Pupil（学生）:Cold
contracts,
heat
expands．That's
why
days
are
shorter
in
winter
and
longer
in
summer．
老师：请解释一下冷和热的作用，并举例说明。学生：热胀冷缩。这就是夏天日子长冬天日子短的原因。