The students are having their chemistry class.
The
students
are
having
their
chemistry
class
.
Miss Li is telling the children what water is like.
Miss
Li
is
telling
the
children
what
water
is
like
.
After that, she asks her students some questions, and one of them is, "Boys and girls!
After
that
,
she
asks
her
students
some
questions
,
and
one
of
them
is
,
``
Boys
and
girls
!
What is water?
What
is
water
?
Can you tell me?"
Can
you
tell
me
?
''
She waits for a few minutes, but no one answers her.
She
waits
for
a
few
minutes
,
but
no
one
answers
her
.
Then Miss Li asks again.
Then
Miss
Li
asks
again
.
"Why don't you answer my question?
``
Why
do
n't
you
answer
my
question
?
I tell you what water is like, right?"
I
tell
you
what
water
is
like
,
right
?
''
Then a boy puts up his hand and says, "Miss Li, you tell us that water has no color and no smell.
Then
a
boy
puts
up
his
hand
and
says
,
``
Miss
Li
,
you
tell
us
that
water
has
no
color
and
no
smell
.
But I think that water is something that is black when I wash my hand in it."
But
I
think
that
water
is
something
that
is
black
when
I
wash
my
hand
in
it
.
''
All the students begin to laugh.
All
the
students
begin
to
laugh
.
Miss Li laughs too.
Miss
Li
laughs
too
.
Then another boy puts up his hand, Miss Li says "What do you think, Wang Bing?"
Then
another
boy
puts
up
his
hand
,
Miss
Li
says
``
What
do
you
think
,
Wang
Bing
?
''
The boy says: "Miss Li, where can we find water that has no color and no smell?"
The
boy
says
:
``
Miss
Li
,
where
can
we
find
water
that
has
no
color
and
no
smell
?
''
"Why do you say so?"
``
Why
do
you
say
so
?
''
Miss Li asks.
Miss
Li
asks
.
"The water in the river behind my house is always black and it has a bad smell."
``
The
water
in
the
river
behind
my
house
is
always
black
and
it
has
a
bad
smell
.
''
Answers the boy.
Answers
the
boy
.
And most of the children think he is right.
And
most
of
the
children
think
he
is
right
.
"I am sorry to hear that, children."
``
I
am
sorry
to
hear
that
,
children
.
''
says the teacher.
says
the
teacher
.
"Our water is getting dirtier.
``
Our
water
is
getting
dirtier
.
That is a problem.
That
is
a
problem
.
All of us must try our best to make it clean again."
All
of
us
must
try
our
best
to
make
it
clean
again
.
''
The students are having their chemistry class. Miss Li is telling the children what water is like. After that, she asks her students some questions, and one of them is, "Boys and girls! What is water? Can you tell me?" She waits for a few minutes, but no one answers her. Then Miss Li asks again. "Why don't you answer my question? I tell you what water is like, right?"  Then a boy puts up his hand and says, "Miss Li, you tell us that water has no color and no smell. But I think that water is something that is black when I wash my hand in it."  All the students begin to laugh. Miss Li laughs too. Then another boy puts up his hand, Miss Li says "What do you think, Wang Bing?" The boy says: "Miss Li, where can we find water that has no color and no smell?"  "Why do you say so?" Miss Li asks.  "The water in the river behind my house is always black and it has a bad smell." Answers the boy. And most of the children think he is right.  "I am sorry to hear that, children." says the teacher. "Our water is getting dirtier. That is a problem. All of us must try our best to make it clean again."