英语沪教版八年级上册1.2单元知识总结及测试
一、课文单词及短语梳理
(一)词汇
Unit
1:
scientist
n.
科学家
2.
inventor
n.
科学家
3.
musician
n.
音乐家
4.
invention
n.
发明
5.
intelligence
n.
才智;智慧
6.
ability
n.
能力;才能
7.
countryside
n.
乡村
8.
dinosaur
n.
恐龙
9.
notebook
n.
笔记本
10.
human
adj.
人的
11.
perhaps
adv.
可能,大概
12.
even
adv.
甚至
13.
suddenly
adv.
突然
14.
however
adv.
然而
15.
nobody
pron.
没有人
16.
win
v.
赢,
获胜
17.
include
v.
包括,包含
Unit
2:
number
n.
数字
2.
amount
n.
数量
3.
rest
n.
剩余部分
4.
prize
n.
奖赏;奖品
5.
chess
n.
国际象棋
6.
chessboard
n.
棋盘
7.
traffic
n.
交通(不可数)
8.
accident
n.
事故
9.
grain
n.
谷粒,粮食
10.
wise
adj.
充满智慧的
11.
instead
n.
代替,顶替
12.
correctly
adv.
正确地
13.
challenge
v.
向(某人)挑战
14.
promise
v.
许诺,承诺
15.
double
v.
(使)加倍
16.
realize
v.
认识到,意识到
17.
copy
v.
抄写,复制
18.
check
v.
检查,核实
(二)短语
Unit
1:
in
the
countryside
在乡村,
在农村
2.
human
being
人;
人类
die
out
灭绝;
消失
4.
find
out
了解(到);
弄清
go
for
a
walk
去散步
6.
something
important
重要的事
just
like
正如,
正像
8.
be
born
出生
9.
take
picturesof给...拍照
Unit
2:
a
long
time
ago
很早以前
2.
challenge...to...
向(某人)挑战
3.
and
so
on
...等等
4.
copy
down
抄写,
誊写
5.
not...
any
more
不再
6.
in
this
way
用这种方式
7.
so
that
为的是,以便
8.
take
place
发生
二、重要知识讲点解和辨析
Unit
1:
(一)重点词汇及短语
1.
drawing
,picture
和painting
drawing
指素描、工程图、线条图、铅笔画、钢笔画等
picture
指图片、图画、照片等。指照片时,与
photo
意思相同
painting
指着色的水彩画、油画等
“millions
of”与
“基数词
+
million”
①不与具体数字连用时,hundred,
thousand,
million
等词后面既不加
s,也不加
of,
直接跟名词复数。②若前面无具体数字时,则后面加s,
加
f,
表示概数“几百,几千,几百万,成千上万的等…”。如:two
million
birds
两百万只鸟;millions
of
birds几百万只鸟,成千上万只鸟。
3.
“however”与
“but”
①however意为“然而”,常用逗号隔开,语气较弱。如:I'd
like
to
go
with
you;
however,
my
hands
are
full.
②but
意为“但是”,
不用逗号隔开,
语气相对较强。如:Please
excuse
me,
but
there
is
something
I
must
say.
4.
“person”、“people”与“man”
①person
强调个体和具体的人。如:At
least
one
person
died
and
several
others
were
injured.
②people
集体名词,泛指“人,人们”,一般不指具体的人。如:We
must
gather
the
people
to
our
side.
③man
可指“男人”;也可以指人类。如:The
chick
initially
has
no
fear
of
man.
5.
“win”与“beat”
win
意为“赢得;
获胜”;
宾语常为比赛、战争等。beat
意为“击败;
打败;
胜过”;
宾语常为参赛者、参赛队伍或是对手。如:She
beats
the
other
players
and
won
the
competition.
6.
find
out、find
与
look
for
①find
out
意为“(通过调查而)查明,发现;查出”;如:Scientists
have
found
out
that
the
illness
may
be
caused
by
lack
of
sleep.
②find
意为“发现;找到”,强调找的结果。
③look
for
意为“寻找”,强调找的动作或过程。
如:He
was
looking
for
his
watch
for
a
whole
morning,
but
still
couldn’t
find
it.
重点句型
1.
It’s
+
adj.
+
to
do
该句为一个重要句型,意为“做某事(对某人来说)怎么样”,
其中
it
为形式主语,真正意义上的主语为句末的不定式。如:It
is
very
important
(for
us)
to
learn
English
well.
2.
Some...others...,意为“一些……另一些……”。
如:Some
dinosaurs
were
as
small
as
chickens.Others
were
as
big
as
ten
elephants.
重点语法
复合不定代词:some,
any,
every,
no可分别与one,
thing
和
body
组合成下列复合不定代词:
someone
anyone
everyone
no
one
somebody
anybody
everybody
nobody
something
anything
everything
nothing
与some
和
any
的区别类似,由
some
构成的复合不定代词常用于肯定句中,而由
any
构成的复合不定代词常用于否定句和疑问句中。但some构成的复合不定代词可放在表示请求和建议的疑问句中。
如:I
heard
something
strange
just
now.
There
isn’t
anything
left
in
the
fridge.
Would
you
like
something
to
eat
?
复合不定代词作主语时,谓语需用单数。
如:Someone
wants
to
see
you.
形容词修饰复合不定代词时,应放在复合不定代词后,作定语后置。
如:something
important
nothing
wrong
anything
possible
Unit
2:
重点词汇及短语
1.
challenge
v.
向(某人)挑战;
①challenge
sb.
向某人挑戓。如:Do
you
want
to
challenge
me?你想向我挑戓吗?
②challenge...to...在某方面向某人挑战。
如:The
king
challenged
him
to
a
game.
Joey
challenged
Jim
to
a
football
match.
2.
promise
v./n.
承诺;许诺
①promise
作动词,后可接双宾语或动词不定式作宾语
如:Ivy’s
father
promised
her
a
dress.=Ivy’s
father
promised
to
buy
a
dress
for
her.
②promise
作名词时,表示“诺言;保证”,常用短语为make
a
promise,意为“许下承诺;保证”。如:Ivy’s
father
made
a
promise
to
buy
a
dress
for
her.
rest
n.
休息,如:Let’s
have
a
rest.
n.
剩余部分,如:This
morning
Daisy
ate
some
bread
and
kept
the
rest
for
tomorrow.
v.
休息,如:We
will
rest
for
half
an
hour.
4.
instead
adv.
代替;顶替;而
如:Amanda’s
boyfriend
asked
why
she
couldn't
just
forget
about
dieting
and
eat
normally
instead.
阿曼达的丈夫问阿曼达为什么就不能忘掉节食而正常吃饭。
※instead
of
doing
如:They
raised
prices
and
cut
production,
instead
of
cutting
costs.
他们提高了价格,减少了产量,而没有削减成本。
5.
advice
与advise
①advice
n.
建议(不可数名词)
如:a
piece
of
advice
一则建议
②advise
v.
建议;作动词时后可接名词、代词或doing作宾语,也可用advise
sb.
(not)
to
do
sth.,
表示“建议某人(不)做某事”
Liz
advised
Eason
to
stop
drinking
so
much.
6.
way
的相关短语辨析
in
this
way
用这种方法;这样
Only
in
this
way
can
Amanda
beat
Ivy.
只有这样,阿曼达才能打败艾薇。
in
the
way
挡道
There
is
a
dog
in
the
way.
那有只狗挡道。
on
the
way
在路上
Daisy
lost
money
on
the
way
to
school.
黛西在上学癿路上把钱丢了。
by
the
way
顺便说一下;顺便问一下
By
the
way,
how
old
are
you,
Annabella?
顺便问一下,安娜贝拉,你多大了?
off
the
way
偏离正轨;脱离轨道
The
train
drove
off
the
way
suddenly.
火车突然偏离轨道行驶。
7.
one
day
有一天;某一天
如:One
day,
Liz
will
finally
get
married
with
her
Mr.
Right.
将来总有一天,利兹最终会和她癿白马王子结婚癿。
※
“one
day”与
“some
day”
one
day
可表示过去的某一天或是将来的某一天;但
some
day
只能表示将来的某一天。
In
fact,
Eason
had
his
thirtieth
birthday
one
day/some
day
in
2012.
事实上,在
2012
年的某一天伊森度过了他
30
岁癿生日。
8.
not...any
more
不再
①not…any
more
相当于no
more,
表示数量或程度上的“不再”;
如:
You
can't
drink
any
more.
=You
can
drink
no
more.
②not…any
longer
相当于no
longer,
表示时间或距离上的“不再”;
如:He
doesn't
live
here
any
longer.
=He
no
longer
lives
here.
9.
would
like
想要;愿意
①would
like
+
名词。如:Would
you
like
a
cup
of
coffee?
②would
like
to
do
如:I
would
like
to
have
a
cup
of
coffee.
③would
like
sb.
to
do
如:I
would
like
you
to
have
a
cup
of
coffee
with
me.
so
that
为的是;以便
so
that
在引导目的状语从句时,从句中常有
can,
could,
may,
might
等情态动词。相当于
in
order
that
如:Jimson
saved
money
for
one
year
so
that/in
order
that
he
could
travel
to
Africa.
11.
the
amount
of
与
the
number
of
①the
amount
of
修饰不可数名词。如:The
amount
of
milk
is
250ml.
②the
number
of
修饰可数名词。如:The
number
of
students
in
our
class
is
20.
重点句型
Wouldn’t
you
like...?
意为“难道你不想要……吗?”
这是一句否定疑问句,用来表示建议,还可以用来表示希望等到肯定答复、惊讶、赞赏、怀疑或责备等意义。类似的句子还有Don’t
you...?
Isn’t
it
...?
Doesn’t
he/she...?
Can’t
you...?等。
如:Wouldn’t
you
like
gold
or
silver
instead?
难道你不想要金子或银子吗?
It
is
...
long/wide/high
.
表示长宽高面积等
在英语中,表示长宽高面积等通常用基数词+单位名词[
metre(s),
foot/feet,
centimeter(s)等]+形容词(long,
wide,
high...)
如:The
bridge
is
about
50
metres
long.
这座桥约
50米长。
They
are
only
15
centimetres
wide.
它们只有15厘米宽。
You
can...
if
...
你可以...如果
You
can
hace
any
prize
if
you
win
the
game.
?If?引导的条件状语从句可以放在主句之后,也可以放在主句之前,当条件状语从句位于主句之前时,后面要用逗号与主句隔开。?
如:?We’ll?go?to?visit?the?Great?Wall?if?it?is?fine?tomorrow.?如果明天天气好,我们将去游览长城。?
If?it?rains,?I?won’t?go?swimming.?如果下雨,?我不会去游泳。
【拓展】
含有if
引导的条件状语从句的主从复合句,要遵循“主将从现”的原则,即若主句用一般将来时(或含有情态动词,为祈使句),if
引导的条件状语从句用一般现在时。
重点语法
基数词不序数词
1、定义:表示数目多少和顺序的词,包括基数词和序数词两类
2、基数词:
基数词
构成方法
举例
13-19
个位加-teen
13--thirteen
20-90(整十位数)
个位加-ty
20--
twenty
21-29
整十位数词+连字符+个位数词
73--
seventy-three
百位
几百+and+末尾两位数(或末位数)
178--
one
hundred
and
seventy-eight
千位
几千+几百+and+末尾两位数(或末位数)
1,234
--
one
thousand
two
hundred
and
thirty-four
千位以上
从后往前每三位一个“,”隔开。第一个“,”表示千
thousand,第二个表示百万
million,第三个表示十亿
billion,然后每节用几百几十几表示
如:18,657,421--eighteen
million
,six
hundred
and
fifty-seven
thousand
,four
hundred
and
twenty-one.
※基数词需注意:
①“几十几”的十位和个位间要用连字符“-”
②三位数须在百位和十位(若无十位则和个位)间用
and
连接
③当基数词
hundred,thousand,million,billion
等前有具体数词或者several
修饰时必须用单数。
3、序数词
序数词
构成方法
1-3
first
第一,second
第二,third
第三
4-19
4
个例外:5th—fifth
8th—eighth
9th—ninth
12th—twelfth
整十位数
(除了
ten)变
y
为
i
加
eth;如:twentieth
21
以上
只变末位:21st—twenty-first
※序数词需注意:
A.前面通常要用定冠词
the
B.不用定冠词的情况:
①作副词时通常不用冠词;如:He
came
first.
②若序数词前用了物主代词或名词所有格,不加定冠词。如:his
second
wife;
Tom’s
third
book
③前面若用
a
或者
an,则表“又一,再一”(无具体的范围限制)
1.Would
you
like
to
go
________?( )
A.anywhere
relaxing
B.relaxing
somewhere
C.somewhere
relaxing
D.somewhere
relaxed
【解析】答案:C.
somewhere常用作副词,意为"到某处,在某处";anywhere意思是"在任何地方,到任何地方"somewhere和anywhere有时与修饰语或短语连用,或成为宾语而当名词用.这时候,其修饰语或短语要置于somewhere和anywhere之后.relaxing意思是"令人放松的"主要修饰物;relaxed意思是"感到放松的"主要修饰人.根据"Would
you
like
to
go
________?"因此可知这句话的意思是"你想到一个令人放松的地方去吗?"some构成的复合不定代词可放在表示请求和建议的疑问句中。所以此处用somewhere而不是anywhere,修饰地方,应用relaxing.综上所述,故选C.
【点评】首先要掌握这个句子的意思以及somewhere和anywhere的意思以及用法,然后结合具体的题目,就可以确定正确答案.
2.﹣How
many
girls
are
there
in
your
class?﹣____
them____over
twenty.( )
A.A
number
of,are
B.The
number
of,are
C.A
number
of,is
D.The
number
of,is
【解析】答案:D
A
number
of,一些、许多,后面的谓语用复数形式;the
number
of
girls女孩子的人数,后面的谓语用单数形式.故选:D.
【点评】本题考查A
number
of与the
number
of
的区别,注意掌握主谓一致即可.
3.____of
the
land
in
that
town____covered
with
trees
and
grass.( )
A.Two
fifth;
is
B.Two
fifth;
are
C.Two
fifths;
is
D.Two
fifths;
are
【解析】答案:C
根据____of
the
land
in
that
town____covered
with
trees
and
grass,得知这里考查分数的表达法,分子用基数词,分母用序数词,当分子大于1时,序数词用复数,五分之二的表达是two
fifths,同时陆地的五分之二被看作一个整体,谓语动词用单数,故选C.
【点评】分数的表达法是考试的重点内容,需要同学们认真掌握,分子用基数词,分母用序数词,当分子大于1时,序数词用复数,如,五分之二的表达是two
fifths。
4.It
is
very
cool
in
Guizhou
in
summer,so
_______
people
come
here
for
vacation.( )
A.two
thousands
B.thousands
of
C.thousand
of
【解析】答案:B.
本题考查数词thousand的用法,根据所学数词用法,若thousand
前有明确数字,则thousand不加s和of,反之则加s
和of,所以答案为:B
【点评】本题考查数词thousand的用法,像这样的还有hundred/million/billion.若他们前面有明确数字,则thousand不加s和of,反之则加s
和of.
1.﹣﹣My
little
brother
wonders
why
dinosaurs
died
out
suddenly.
﹣﹣Maybe
he
can
look
it
up
in
the
encyclopaedia.( )
A.appeared
B.didn't
exist
C.went
outside
2.Chairman
Mao
______
in
the
countryside.
A.bears
B.born
C.is
born
D.was
born
3.Tom!You're
no
longer
a
3﹣year﹣old
kid.I
can
cook
dinner
for
you,but
don't
expect
me
to
do
________
for
you.Go
and
tidy
your
room!( )
A.everything
B.something
C.anything
D.nothing
4.Do
you
know
how
did
dinosaurs
die
______?
A.off
B.out
C.away
D.down
5.He
gave
me
advice
instead
of
money.( )
A.in
place
of
B.think
of
C.remind
of
6.Though
Kongfu
Panda
3
is
popular
with
teenagers,it
won't
be
liked
by
______.( )
A.nobody
B.somebody
C.everybody
D.anybody
7.You’d
better
take
the
map
with
you______you
won’t
get
lost.
A.as
long
as
B.as
soon
as
C.now
that
D.so
that
8.We
had
fun
and
learnt
______
new
as
well.We
had
a
good
time.( )
A.something
B.anything
C.nothing
D.everything
9.Amy
will
be
an
elder
sister.Her
parents
are
going
to
have
_______
child.( )
A.two
B.second
C.the
second
10.﹣How
old
is
your
son?
﹣_________.We
had
a
special
party
for
his
_________
birthday
yesterday.( )
A.Nine,nine
B.Ninth,nine
C.Nine,the
ninth
D.Nine,ninth
1.There's
______
in
the
city.Why
not
have
a
picnic
in
the
countryside?
Great!Daweishan
Mountain
might
be
a
good
choice.( )
A.interesting
something
B.nothing
interesting
C.anything
interesting
2.﹣What
a
terrible
accident!﹣Do
you
know
when
it
took
place?( )
A.created
B.checked
C.happened
3._______
my
friend
could
solve
the
problem
more
easily.( )
A.On
the
way
B.In
this
way
C.By
the
way
D.In
the
way
4.These
animals
are
________.We
should
protect
them
and
stop
_________
trees.( )
A.in
danger,cutting
down
B.all
the
way,cut
down
C.dangerous,to
cut
down
5.Why
should
we
protect
animals?—If
not,they
will
die
out.( )
A.disappear
B.remain
C.leave
6.﹣Would
you
like
to
go
to
the
party
with
me?﹣I'd
love
to,
_________
I'm
afraid
I
have
no
time.( )
A.so
B.or
C.but
7.﹣Who
won
the
fist
prize
of
the
______World
Table
Tennis
Championship?
﹣You
mean
the
match
held
in
______?Ma
Long
did.( )
A.fifty﹣four;
German
B.fifty﹣fourth;
Germany
C.fifty﹣fourth;
German
D.fifty﹣four;
Germany
8.________fans
would
like
to
go
to
Brazil
to
watch
the
World
Cup.( )
A.Million
of
B.Millions
of
C.Millions
9.This
morning
I
tried
on
some
coats
in
the
shop,but
_______
of
them
looked
good.( )
A.nothing
B.all
C.none
D.neither
10._______
the
teachers
in
their
school
is
about
200
and
one
fourth
of
them
are
_______
teachers.( )
A.A
number
of;women
B.A
number
of;woman
C.The
number
of;women
D.The
number
of;woman
_______________________________________________________________________________
_______________________________________________________________________________
用下列所给词或短语的正确形式填空
The
food
is
not
fit
for
_______
beings,
but
for
pets.
Alexander
Graham
Bell
is
the
_______
of
the
telephone.
I’m
so
tired,
I
will
_______
for
half
an
hour.
He
was
awarded
the
Nobel
_______
for
Physics
in
1985.
Read
this
passage,and
_______
the
answer
to
this
question.
As
soon
as
we
_______
something
was
wrong,
we
moved
the
children
away.
He
_______
to
come,
but
he
didn’t
show
up
at
the
end.
We
did
the
logo
in
lower-case
letters
_______
capitals.
He
tried
his
best
to
_______
his
friend
and
_______
the
game!
二、单项选择
1.Did
the
policeman
give
much
_______
on
how
to
protect
personal
information?( )
A.note
B.tip
C.advice
D.book
2.﹣﹣She
is
too
young
to
have
the
intelligence
to
take
care
of
herself.
﹣﹣But
I
think
a
12﹣year﹣old
girl
is
old
enough
to
do
that.( )
A.energy
B.introduction
C.ability
3.All
the
shops
are
closed,
_____
Seven-
Eleven.
A.include
B.including
C.included
D.includes
4.If
Tom
______
the
game,
we’ll
give
him
a
surprise.
A.win
B.wins
C.
won
D.winning
5.The
Smiths
are
watching
the
men's
table
tennis
match
at
the
moment.( )
A.Mr
Smith
B.Mrs
Smith
C.The
Smith
family
D.Mr
Smith
and
his
son
6.﹣Would
you
like
another
cup
of
coffee,Linda?
﹣Thank
you
anyway.I've
already
had
one
cup,and
I'm
drinking
_______
cup.( )
A.one
B.the
first
C.the
second
D.the
third
7.﹣I'm
worried
about
our
talent
show
tomorrow.
﹣Be
confident(自信的)!If
you
don't
believe
in
yourself,_______
will.( )
A.nobody
B.anybody
C.everybody
D.somebody
8.If
you
want
to
keep
your
teeth
healthy,you'd
better
not
eat
________
a
lot.( )
A.something
sweet
B.anything
sweet
C.nothing
sweet
9.The
apples
are
cheap.
______,
nobody
wants
to
buy
them.
A.But
B.And
C.So
D.However
10.Nowadays,______
of
the
old
people
in
the
area
_____
used
to
dancing
on
the
square
after
supper.
A.two
third;
is
B.two
thirds;
is
C.two
thirds;
are
三、阅读理解
We
all
know
that
flight
tickets
(飞机票)
are
usually
expensive
in
peak
seasons
(旺季)
like
the
Christmas
holiday.And
it's
hard
to
buy
a
ticket
in
those
seasons.However,when
the
peak
seasons
are
over,the
price
of
flight
tickets
becomes
much
lower.How
can
you
buy
a
flight
ticket
successfully
at
a
lower
price?A
website
called
Google
Flights
can
help
you.
Google
Flights
can
help
you
find
the
best
flights
according
to
your
needs
and
plan
your
trip
well.For
example,if
you
want
to
go
to
New
York
in
February,you
can
input
(输入)
your
information
into
the
website.Then
it
will
show
you
the
exact
day
in
February
when
the
ticket
price
is
the
lowest.If
you
want
to
travel
with
at
most
1,000dollars
but
don't
know
where
to
go,just
tell
Google
Flights.It
will
tell
you
which
city
is
the
most
suitable
for
you
and
help
you
make
plans
for
your
trip.Google
Flights
also
helps
you
compare
prices
among
different
airlines.It
provides
a
calendar
with
flight
prices
listed
every
day.What's
more,its
best
flights
box
can
tell
you
which
flights
are
the
best
combinations
(组合)
of
price
and
speed.
We
can
say
that
sometimes
this
online
tool
can
beat
out
any
travel
agent.To
use
this
new
tool,you
need
to
provide
your
email
address.Google
Flights
will
send
you
emails
about
price
changes
and
travelling
tips.So
if
you
plan
to
go
out
these
days,just
tell
your
needs
to
Google
Flights
and
wait
for
emails.
1.According
to
the
passage,the
price
of
flight
tickets______.
A.becomes
lower
after
peak
seasons
B.never
changes
at
all
C.is
high
all
the
time
D.drops
a
lot
before
peak
seasons
2.What
can't
Google
Flights
do?
A.Look
for
a
cheaper
flight
ticket.
B.Help
people
plan
their
trips.
C.Give
people
any
tips
on
traveling.
D.Help
people
book
rooms
in
different
cities.
3.The
underlined
phrase"beat
out"in
the
passage
may
mean"______".
A.get
along
with
B.do
better
than
C.be
the
leader
of
D.play
tricks
on
4.Your______is
required
if
you
want
to
use
Google
Flights.
A.telephone
number
B.home
address
C.email
address
D.bank
card.
参考答案
1.【解析】答案:C.somewhere常用作副词,意为"到某处,在某处";anywhere指"在任何地方,到任何地方"。somewhere和anywhere有时与修饰语或短语连用,或成为宾语而当名词用.这时候,其修饰语或短语要置于somewhere和anywhere之后.relaxing意思是"令人放松的"主要修饰物;relaxed意思是"感到放松的"主要修饰人.根据"Would
you
like
to
go
________?"因此可知这句话的意思是"你想到一个令人放松的地方去吗?"some构成的复合不定代词可放在表示请求和建议的疑问句中。所以此处用somewhere而不是anywhere,修饰地方,应用relaxing.综上所述,故选C.
2.【解析】答案:D.A
number
of,一些、许多,后面的谓语用复数形式;the
number
of
girls女孩子的人数,后面的谓语用单数形式.故选:D.
3.【解析】答案:C.根据____of
the
land
in
that
town____covered
with
trees
and
grass,得知这里考查分数的表达法,分子用基数词,分母用序数词,当分子大于1时,序数词用复数,五分之二的表达是two
fifths,同时陆地的五分之二被看作一个整体,谓语动词用单数,故选C.
4.【解析】答案:B.本题考查数词thousand的用法,根据所学数词用法,若thousand
前有明确数字,则thousand不加s和of,反之则加s
和of,所以答案为:B
1~5
B
D
A
B
A
6~10
C
D
A
C
D
1~5
B
C
B
A
A
6~10
C
B
B
C
C
一.1.
human
;
2.
inventor
;
3.
rest
;
4.
Prize
;
5.
find
out
;
6.
realized
;
7.
promised
;
8.
instead
of
;
9.
beat
,
win.
二.单项选择
1~5
C
C
B
B
C
6~10
C
A
B
D
B
三.阅读理解
1~4
A
D
B
C