Unit
5
What
are
the
shirts
made
of
用本单元所学词汇的适当形式填空完成短文
As
everyone
knows
that
we
Chinese
usually
use
__________1
(chopstick)
to
eat
dinner.
We
use
them
__________2
(wide)
because
the
chopsticks
are
useful
and
cheap.
Scientists
say
that
using
chopsticks
is
good
for
us.
__________3
(as
far
as)
I
know,
usually
they
__________4
(be
made
of)
bamboo.
And
some
are
made
of
silver
or
plastic.
But
for
our
health,
I
think,
we
should
avoid
__________5
(buy)
plastic
chopsticks.
Last
week
I
bought
some
bamboo
chopsticks
and
they
______________6
(be
made
in)
Sichuan.
Sichuan
__________7
(be
known
for)
pandas
in
the
world
as
well.
典例
假如你是王洁，你在美国的笔友John
Black想到北京旅行，请根据提示给他发e mail，词数90左右。
提示：北京是中国的首都，它历史悠久，名胜古迹不胜枚举，这里有万里长城、故宫(the
Imperial
Palace)、颐和园(the
Summer
Palace)等。夏秋是来北京的最佳时节，你一定会玩得很开心。
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
答案
1．chopsticks 2.widely 3.As
far
as 4.are
made
of
5．buying 6.were
made
in 7.is
known
for
二、范文欣赏：
Dear
John，
I've
heard
from
you.
I
know
you
want
to
visit
Beijing.
That's
a
good
idea.
As__you__know①，
Beijing
is
the
capital
of
China.
It__has__a__long__history②
and
there
are
many
places
of
interest:
the
Great
Wall,
Tian'anmen
Square,
the
Great
Hall
of
the
People,
the
Imperial
Palace,
Beihai
Park,
the
Summer
Palace
and__so__on①.
Summer
and
autumn
are
the__best__time__to__come__here②.
I
think
you'll
have
a
good
time.
I
hope
you'll
come
soon
and
wish__you__a__lot__of__fun③.
Yours，
Wang
Jie
高分点评：本文运用“四层递进法”进行写作：
1．提出主题：I
know
you
want
to
visit
Beijing.
2．主题事例：…there
are
many
places
of
interest…
3．主题特征：Summer
and
autumn
are
the
best
time…
4．主题与人：I
think
you'll
have
a
good
time.
①作者运用As
you
know,
and
so
on等短语衔接上下文，使作文结构紧凑、连贯；②写作中作者熟练运用了It
has
a
long
history,
the
best
time
to
come
here等结构，用语准确，表达流畅；③句式wish
you
a
lot
of
fun表达了作者的美好祝愿，情感真挚。Unit
5
What
are
the
shirts
made
of
一、单项选择
1．I
found
________
not
very
easy
________
to
ride
a
bike.
A．that;
learn
B．it;
to
learn
C．that;
to
learn
D．it;
learn
2．If
all
business
goes
paperless,
at
least
one
million
tons
of
paper
will
be
________
a
year.
A．used
B．saved
C．copied
D．offered
3．It's
sports
time.
Most
________
students
in
Class
1
are
playing
football
on
the
playground.
A．boy
B．boys
C．boy's
D．boys'
4．—What
________
the
fire
—I
have
no
idea.
I
just
saw
many
people
pouring
water
onto
the
house
on
fire.
A．stopped
B．caused
C．made
D．drew
5.
I
love
this
song
because
it
________
soft
and
beautiful.
A．smells
B．tastes
C．sounds
D．looks
二、根据汉语完成句子
6．这儿不允许大声喧哗。
Talking
noisily
________
________
________
here.
7．在来这里的路上我们目睹了多起交通事故。
Many
________
________
________
seen
on
our
way
here.
8．在法国人们说什么语言？
What
languages
________
________
in
________？
9．百分之三十的湖面遭到了污染。
30
________
of
the
________
of
the
lake
is
polluted.
10．人们对这款产品的原材料一无所知。
Nothing
________
________
about
the
________
of
the
product.
三、语法专练
11．Some
students
in
this
school
________
abroad
as
exchange
students
every
year.
A．sent
B．send
C．are
sent
12．It
________
that
Donald
Trump
has
been
chosen
as
American
president.
A．says
B．was
said
C．is
said
D．seemed
13．You
can
go
out
if
your
homework
________．
A．are
finished
B．finishes
C．is
finished
D．will
be
finished
14．—How
clean
your
car
is!
—Thank
you.
It
________
very
often.
A．is
washed
B．washes
C．was
washed
D．washed
15．Chengdu
is
a
greener
city
now
because
more
and
more
trees
________
every
spring.
A．were
planted
B．are
planted
C．will
be
planted
答案
一、1.B 2.B
3．A 点拨：辨析法。名词作定语修饰其他名词用单数形式。
4.B 5.C
二、6.is
not
allowed 点拨：主谓一致法。主语为Talking
noisily，与allow为被动关系。
7．traffic
accidents
were 8.are
spoken；France
9．percent；surface 10.is
known；materials
三、11.C 点拨：students与send为被动关系；every
year提示时态为一般现在时。
12．C 点拨：句意：据说唐纳德·特朗普当选美国总统了。据说用It
is
said…时态为一般现在时，因为主语从句为现在完成时。
13．C 14.A
15．B 点拨：关键词提示法。句中关键词is,
every
spring均提示句子时态为一般现在时。Unit
5
What
are
the
shirts
made
of
一、单项选择
1．Shirley,
a
book
lover,
often
brings
home
many
books
to
read
________
the
library.
A．in
B．for
C．from
D．by
2．Jim's
sister
has
a
bird.
________
mouth
is
very
long.
A．Hers
B．It's
C．Its
D．He
3．The
price
of
houses
in
the
city
________
a
lot
last
year.
A．rose
B．raised
C．has
risen
D．has
raised
4．Boys'
Day
________
on
November
12th
in
our
school
every
year.
A．celebrates
B．is
celebrated
C．will
be
celebrated
D．celebrated
5．—It
has
been
raining
for
days.
When
will
it
stop
—It
is
________
that
the
rainy
season
will
be
longer
than
last
year.
A．says
B．said
C．saying
D．to
say
6．Her
work
________
often
________
on
time.
A．will；complete
B．is；going
to
complete
C．is；completed
D．are；going
to
be
completed
7．She
________
in
love
with
the
________
clay
characters
from
the
Chinese
fairy
tale
Journey
to
the
West.
A．fall;
lovely
B．fell;
living
C．falls;
lively
D．fell;
alive
8．—I
think
everything
should
go
________
our
plan.
—OK,
we
will
do
so.
A．thanks
to
B．according
to
C．as
for
D．in
fact
9．________，
Chinese
people
celebrate
the
Mid Autumn
Festival
by
enjoying
the
full
moon
and
eating
mooncakes.
A．Quickly
B．Suddenly
C．Secretly
D．Traditionally
10．It
will
________
the
workers
ten
days
to
finish
all
the
work.
A．take
B．spend
C．pay
二、用所给单词的适当形式填空
11．People
from
all
over
the
world
________
(competition)
in
kite
flying.
12．The
____________
(internationally)
kite
festival
is
held
in
Weifang
every
year.
13．Hemingway's
works
________
(show)his
love
for
life.
14．At
the
beginning
of
the
show,
some
cups
____________
(cover)
with
a
big
piece
of
clothing;
then
they
____________
(turn)
into
two
birds!
Wasn't
that
amazing
15．The
________
(heat)
from
the
fire
will
soon
dry
your
coat.
三、按要求完成句子
16．The
camera
is
made
in__Jinan．(对画线部分提问)
________
________
the
camera
________？
17．A
middle
school
student
invented
a
new
robot
last
term.
(改为被动语态)
A
new
robot
________
________
by
a
middle
school
student
last
term.
18．My
grandma
cleans
the
room
every
day.
(改为被动语态)
The
room
________
________
by
my
grandma
every
day.
19．His
jokes
always
make
us
laugh.(改为被动语态)
We
________
always
________
________
laugh
by
his
jokes.
20．Paper__cuttings
are
seen
as
symbols
of
wishes
for
good
luck.(对画线部分提问)
________
________
________
as
symbols
of
wishes
for
good
luck
四、根据汉语完成句子
21．火箭像箭一样冲入云霄，但是6秒以后却爆炸了。
The
rocket
_______
_______
the
clouds
like
an
arrow,
but
it
exploded
after
6
seconds.
22．他们因在这场足球赛中击败国家队而出名。
They
became
________
for
________
the
national
team
in
the
soccer
game.
23．月球上的食物很可能会以药片的形式存在，而且味道没那么可口。
Food
on
the
moon
would
most
probably
be
_______
_______
_______
_______
pills
and
would
not
be
tasty.
24．遗爱湖公园被认为是湖北最美的公园之一。
Yi'ai
Lake
Park
________
________
________
one
of
the
most
beautiful
parks
in
Hubei.(regard)
25．我们并没有收到机组人员发出的任何求救信号。
We
didn't
catch
any
signals
________
________
for
help
by
the
crew.
五、完形填空(词数：约190 建议用时：5分钟)
Some
inventions
are
very
important.
For
example,
the
telephone
allows
people
to
communicate
with
others
all
over
the
world.
The
________26
lets
people
travel
long
distances
in
a
short
time.
Life
is
much
easier
with
these
________27
inventions.
Some
inventions
are
just
fun.
A
company
in
Japan
has
invented
________28
flowers.
You
can
listen
to
music
that
comes
through
real
flowers.
Customers
in
restaurants
can
smell
the
beautiful
roses
________29
listen
to
pleasant
music
while
eating.
People
in
the
dentist's
office
can
look
at
pretty
lilies
and
listen
to
Mozart
while
having
their
________30
examined!
There
is
now
a
vehicle
that
gets
you
around
with
almost
no
effort
________31.
In
fact,
you
drive
this
invention
while
standing
on
it!
This
vehicle
runs
by
electricity.
It
________32
quite
easily.
When
you
lean
forward,
it
moves
forward,
and
when
you
lean
________33,
it
moves
backward!
A
new
kind
of
bubble
liquid
has
been
invented.
If
you
blow
bubbles
________34
this
liquid,
they
can
last
for
several
minutes!
________35
are
very
strong.
You
can
even
pick
them
up
and
throw
them
around!
Do
you
have
your
own
ideas
about
inventions
now
26．A.bike
B．bus
C．ship
D．plane
27．A.important
B．useless
C．boring
D．strange
28．A.dancing
B．talking
C．singing
D．walking
29．A.but
B．so
C．nor
D．and
30．A.ears
B．eyes
C．teeth
D．nose
31．A.in
all
B．at
all
C．after
all
D．for
all
32．A.carries
B．makes
C．works
D．plays
33．A.forward
B．backward
C．towards
D．afterwards
34．A.about
B．at
C．with
D．for
35．A.They
B．We
C．You
D．None
六、任务型阅读
(词数：210 建议用时：5分钟)
How
do
you
feel
about
your
Chinese
Is
it
good
or
bad
If
you
think
you
are
good
at
Chinese,
you
can
take
part
in
the
competition
named
the
“Chinese
Characters
Dictation
Competition
(中国汉字听写大会)”.
The
competition
became
popular
among
teenagers.
Let's
know
something
about
it.
More
and
more
computers
and
smart
phones
are
used
by
teenagers.
They
spend
too
much
time
on
the
Internet
in
playing
or
chatting.
They
are
used
to
sending
messages
by
computers
and
smart
phones.
36.As__a__result,_
_some__teenagers__forget__how__to_
_write
__Chinese_
_characters__by__hand.
The
teachers
and
parents
are
very
worried
about
it.
What
can
they
do
Not
long
ago,
37.they
found
an
interesting
game
called
the
Chinese
Characters
Dictation
Competition.
The
program
was
similar
to
the
American
show
“National
Spelling
Bee”.
In
this
program,
middle
school
students
competed
among
themselves
and
wrote
down
the
Chinese
characters
by
dictation.
Over
two
hundred
competitors
were
from
forty six
middle
schools.
The
audiences(观众)
loved
this
new
kind
of
competition,
too.
They
tried
to
write
down
the
Chinese
characters
while
the
competitors
were
writing
them.
But
they
found
it
was
also
difficult
for
them
to
write
down
all
the
Chinese
characters.
Is
it
an
interesting
competition
Can
you
be
the
winner
36．任务一：Translate
the
underlined
sentence
into
Chinese.
_______________________________________________________________________
37．任务二：第三段画线单词“they”指代的是________________________________
38．任务三：Who
can
compete
in
the
“Chinese
Characters
Dictation
Competition”？
_______________________________________________________________________
39．任务四：Please
write
down
the
main
idea
of
this
passage.
_______________________________________________________________________
答案
一、1.C 点拨：句意：“Shirley，一个读书爱好者，经常从图书馆带许多书回家去读”。
from表示“从……”。 2.C
3．A 点拨：关键词关联法。句中关键词last
year提示谓语动词用一般过去时。 4.B
5．B 点拨：句意：——雨下了好几天了。什么时候会停呢？——据说雨季将比去年时间长。句式It
is
said
that…
意为“据说……”，故选B。
6．C 7.C 8.B
9．D 点拨：常识判断法。根据常识可知，中秋节赏月和吃月饼是中国传统的庆祝方式。故选D。
10．A 点拨：结构分析法。句中it为形式主语，后面的动词不定式作真正主语。根据句意及结构，选A。
二、11.compete 12.international 13.showed
14．were
covered;
were
turned 15.heat
三、16.Where
is；made 17.was
invented 18.is
cleaned
19．are；made
to 20.What
are
seen
四、21.rose
into 22.famous；beating 23.in
the
form
of 24．is
regarded
as
25．sent
out 点拨：句中关键词by
the
crew提示，signals是“被发送出”的。
五、26.D 27.A
28．C 点拨：由下文语境You
can
listen
to
music
可知，上文提到的花是“会唱歌的花”。
29．D 点拨：结构分析法。句中有两个谓语动词smell
和
listen，由and来连接。
30．C 点拨：关键词关联法。上文关键词dentist提示，被检查的是“牙”。 31.B 32.C 33.B
34．C 点拨：关键词关联法。关键词blow
bubbles与this
liquid的关联应该是blow的方式方法，用with。 35.A
六、36.任务一：结果，一些青少年忘记了如何用手写汉字。
37．任务二：The
teachers
and
parents. 点拨：语境推理法。由文中的The
teachers
and
parents
are
very
worried
about
it.
What
can
they
do？就可推断出：they指代老师和父母。
38．任务三：Middle
school
students.
39．任务四：The
Chinese
Characters
Dictation
Competition.Unit
5
What
are
the
shirts
made
of
一、根据汉语提示完成下列句子，每空一词
1．These
new
types
of
energy
cost
very
little
and
________(产生)little
pollution.
2．Tai'an
is
________
________
(因……而著名)Mount
Tai.
3．The
new
system
is
now
________
(广泛地)used
by
IT
companies
all
over
the
world.
4．They
are
volunteers
from
________
________
(各地)．
5．Did
you
make
it
________
________
(手工)
or
by
machine
二、用所给词的适当形式填空
6．Miss
Green
advised
us
to
decorate
a
card
for
each
other
with
those
________
(leaf)．
7．The
villagers
are
good
at
________
(pick)
vegetables.
8．These
houses
are
used
by
them
____________
(process)
shirts.
9．Christmas
gifts
were
________
(send)to
the
poor
child.
10．The
art
________
(work)are
made
by
us
students.
三、单项选择
11．—Mike,
what
club
do
you
want
to
join
—Well,
I
want
to
join
the
________
club.
I
love
painting.
A．chess
B．sports
C．art
D．English
12．—Do
you
know
about
Florence
Nightingale
—Yes,
she
was
well known
________
a
nurse
in
England
________
her
kindness
to
the
sick
and
wounded
soldiers.
A．as;
as
B．for;
as
C．to;
for
D．as;
for
13．One
third
of
the
earth's
surface
________
water.
A．is
covered
by
B．was
covered
by
C．covers
by
D．are
covered
by
14．Jiefangbei
is
not
far
from
Chaotianmen.
You
can
easily
visit
________
Jiefangbei
________
Chaotianmen
in
a
day.
A．each;
and
B．none;
or
C．both;
and
D．neither;
nor
15．________
is
used
for
making
cooking
knives
in
most
places.
A．Steel
B．Bamboo
C．Wood
D．Paper
16．We
talked
about
________
new
words.
A．learn
B．learned
C．learning
D．to
learn
17．More
and
more
tea
plants
________
in
our
hometown.
A．grows
B．grown
C．are
grown
D．planted
18．He
Jiang
________
to
give
a
speech
at
the
graduation
ceremony
at
Harvard
University
last
month.
A．invites
B．invited
C．is
invited
D．was
invited
19．—Do
you
have
to
________
your
lunch
at
school
—No.
It's
free.
A．eat
B．bring
C．pay
for
D．take
20．It
________
that
no
one
knew
what
was
happening
in
the
park.
A．as
if
B．looked
C．seemed
D．like
四、情景交际
A：Good
morning,
sir.
__________21
B：I'd
like
to
buy
a
shirt,
please.
A：Oh,
good!
We've
got
lots
of
new
shirts
of
different
styles.
This
way,
please.
__________22
B：Let
me
have
a
look
first.
A：This
blue
one
is
made
of
cotton(棉),
and
that
green
one
is
made
of
silk.
Both
of
them
feel
soft
and
cool
in
summer.
B：The
green
one
looks
nice.
__________23
A：Of
course.
Hmm,
it
fits
you
very
well.
B：Thank
you!
__________24
A：$78.
B：__________25
A：But
it
really
looks
beautiful
on
you.
B：That
is
true.
OK.
I'll
take
it.
A．Can
I
try
it
on
B．Here
is
the
money.
C．Which
one
do
you
like
D．Where
is
the
shirt
E．What
can
I
do
for
you
F．How
much
is
it
G．That
is
a
little
bit
expensive.
答案
一、1.produce 2.famous/
well known
for 3.widely
4．different
areas 5.by
hand
二、6.leaves 7.picking
8．to
process 点拨：结构分析法。are
used在这里意为“被用来”，后面的动词不定式作目的状语。
9．sent 10.works
三、11.C
12．D 点拨：语境分析法。well known后跟for，意为：因……而著名；后跟as，则意为：作为……而著名。
13．A 14.C
15．A 点拨：常识法。“在大多数地方，钢被用来做菜刀”是生活常识。 16.C
17．C 点拨：主语为tea
plants，与动词“种植”为被动关系。 18.D 19.C 20.C
四、21.E 22.C 23.A 24.F 25.GUnit
5
What
are
the
shirts
made
of
一、单项选择
1．You
must
be
more
careful
and
________
the
same
mistakes
you've
ever
made.
A．plan
B．follow
C．avoid
D．enjoy
2．No
matter
________，you
must
follow
the
school
rules.
A．where
are
you
B．what
do
you
do
C．who
are
you
D．who
you
are
3．Here
________
a
pair
of
gloves
for
you
to
wear.
A．are
B．is
C．were
D．was
4．It
is
very
important
to
deal
with
________
work
well.
A．every
day
B．everyday
C．someday
D．some
days
5．We
can't
do
it
that
way—but
whether
it
will
work
is
________
matter.
A．other
B．another
C．each
D．every
6．—Claudia,
are
you
going
to
Mike's
birthday
party
on
Sunday
—Unless
I
________．
A．am
invited B．invited C．was
inviting
7．All
of
us
find
________
necessary
to
take
exercise
every
day.
A．this
B．that
C．them
D．it
8．It's
several
years
since
her
daddy
left
home.
And
she
can
________
remember
what
her
father
looks
like.
A．even
B．hardly
C．sure
D．almost
9．—What
will
the
weather
be
like
tomorrow
—It
________
be
rainy,
cloudy
or
sunny.
Who
knows？
A．must
B．might
C．should
D．can't
10．________
difficulties
she
faces,
she
walks
ten
miles
every
day
to
send
out
the
letters.
A．No
matter
how
B．No
matter
what
C．What
D．However
二、用括号内所给词的适当形式填空
11．Products
of
________
(Japan)
brands
used
to
be
popular
in
our
country.
12．Lots
of
iPhone
6
cellphones
____________
(produce)
in
China.
13．John
is
from
________
(French).
He
wants
to
study
Chinese
and
work
in
China.
14．China
is
getting
________
(good)
at
making
everyday
things
than
before.
15．________
(discover)
come
from
his
lifelong
researches.
三、根据汉语提示完成句子
16．After
he
felt
better,
he
____________
(继续工作)
in
a
different
city.
17．I
knew
about
_______
(大多数)the
local
stores,
and
I
could
find
what
they
wanted
easily.
18．Make
sure
of
the
prices
of
the
shirts
before
__________
(购买它们)．
19．____________
(多少种类)music
can
they
play
on
the
piano
20．They've
____________
(更加善于)collecting
information
through
the
Internet.
四、阅读理解
(词数：约220 建议用时：5分钟)
It
is
reported
that
some
developed
countries
have
shipped
broken
parts
of
computers
to
China.
Last
month
Hong
Kong
officers
found
131，000
kilograms
of
broken
computers,
TVs
and
phones
sent
from
Japan.
Things
like
these
are
called
electronic
waste,
or
e waste.
Dealing
with
them
is
not
an
easy
job.
Every
time
an
old
computer
breaks
down,
it
needs
to
be
dealt
with
safely.
What
is
worse,
at
present,
broken
computer
parts
are
usually
buried.
It
may
be
hundreds
of
years
before
they
are
really
gone
in
the
earth.
Many
places
in
China
are
polluted
by
e waste.
Guiyu
in
Guangdong
Province
is
one
of
them.
This
town
is
named
as
“the
e waste
capital
of
the
world”.
It
has
to
deal
with
1.5
million
kilograms
of
e waste
each
year,
from
which
it
makes
75
million
yuan.
But
it
comes
at
a
cost.
Many
of
the
poisons
in
e waste
find
their
way
into
the
environment.
An
environmental
group
has
found
the
air,
the
earth
and
the
rivers
in
Guiyu
badly
polluted.
Luckily,
the
Chinese
government
wants
the
country
to
change
the
situation.
This
year,
China
passed
a
new
environmental
protection
law.
Computer
companies
like
Lenovo
and
Dell
will
be
asked
to
take
back
their
old
computers.
Hopefully,
the
problem
with
e waste
will
be
solved
in
the
near
future.
21．The
e waste
found
in
Hong
Kong
last
month
was
from
________．
A．France
B．Japan
C．Germany
D．Australia
22．The
underlined
word
“buried”
probably
means
________
in
the
passage.
A．焚烧
B．降解
C．回收
D．掩埋
23．The
town
of
Guiyu
in
Guangdong
Province
________．
A．is
the
e capital
of
the
world
B．has
serious
e waste
pollution
C．deals
with
e waste
safely
D．spends
much
money
on
e waste
24．This
year,
the
Chinese
government
________．
A．closed
some
computer
companies
B．asked
people
to
hand
in
their
old
computers
C．made
a
new
environmental
protection
law
D．tried
to
change
people's
life
25．The
passage
is
mainly
about
________．
A．the
e waste
problem
in
China
B．the
cost
of
burning
e waste
C．the
ways
to
deal
with
e waste
D．the
need
to
pass
a
law
against
e waste
答案
一、1.C 点拨：语境提示法。根据前文语境提示be
more
careful“要更加仔细”，可知要“避免”错误发生。
2．D 点拨：结构分析法。no
matter…引导让步状语从句，从句应为陈述语序。 3.B 4.B 5.B
6．A 点拨：成分分析法。此处省略了主句，Unless引导条件状语从句，主句用将来时，从句用一般现在时；相对于“我”来说应该是“被邀请”，故选A。
7．D 点拨：结构分析法。it作形式宾语，后面的动词不定式短语为真正宾语。 8.B 9.B
10．B 点拨：结构分析法。前面语境为让步状语从句，应由no
matter
what
或whatever引导。
二、11.Japanese 12.are
produced 13.France
14．better 15.Discoveries
三、16.continued
to
work
17．most
of 点拨：关键词关联法。后面的名词短语被限定词修饰，most后面应加of，意为“一定范围内的大多数”。
18．buying
them 点拨：固定搭配法。before后跟动名词，意为“在做某事之前”。
19．How
many
kinds
of 20.got
better
at
四、21.B
22．D 点拨：词义猜测题。根据后文可知，它可能需要数百年从土壤中消失，可知不是回收、焚烧和降解，而是被掩埋。
23．B 点拨：推理判断题。根据文中Guiyu
in
Guangdong
Province
is
one
of
them.
This
town
is
named
as
“the
e waste
capital
of
the
world”．的描述，可知贵屿是世界电子废料之都，可知广东的贵屿电子废料污染严重，故选B。
24．C
25．A 点拨：总结归纳题。根据全文理解和最后一段的描述，可知选A。
