Unit 13 We're trying to save the earth!单元模拟练习（含答案）

Unit
13-2021-2022学年英语人教版九年级单元模拟练习
一、单选题
1.Please
________
the
lights
when
you
go
out.
A.
turn
down
B.
turn
up
C.
turn
on
D.
turn
off
2.—There
are
a
lot
of_____of
bike
riding.
—I
agree.
It's
good
for
the
environment
and
it
saves
money.
A.
instructions
B.
instruments
C.
advantages
D.
products
3.The
classrooms
_____
next
week
to
celebrate
Children's
Day.
A.are
decorated
B.are
decorating
C.will
decorate
D.will
be
decorated
4.A
smile
_______
nothing,
but
gives
much.
A.
pays
B.
takes
C.
costs
D.
spends
5.A
little
wine
will
not
be
_______
to
your
health.
Just
don't
drink
too
much.
A.
helpful
B.
helpless
C.
harmful
D.
harmless
6.—Many
people
play
with
mobile
phones
all
day
instead
of
reading
books.
—That's
too
bad.
Everyone?????????????
be
a
book
lover.
Reading
is
more
enjoyable.
A.may
B.should
C.would
D.might
7.The
film
Operation
Red
Sea
____
a
lot
of
praise
since
its
first
show
months
ago.
A.wins
B.win
C.will
win
D.has
won
8.一Jim,
it's
dark
now.
Please
the
light
in
the
room.
OK,
Mum.
A.
turn
on
B.
turn
up
C.
turn
off
D.
turn
down
9.—Do
you
know
Amy
Hayes?
—Of
course.
She
is
the
woman
who
built
a
house
rubbish.
A.
by
B.
out
of
C.
from
D.
into
10.一Do
you
want
to
eat
here?
一No.
Just
fish
and
chips
to
,
please.
A.
put
away
B.
take
away
C.
send
away
D.
throw
away
11.—Don't
keep
the
water
running
while
brushing
your
teeth.
—Sorry.
I
forgot
to
.
A.
turn
on
it
B.
turn
it
on
C.
turn
off
it
D.
turn
it
off
12.David
Burt’s
dream
in
China
is
to
go
into
the
west
and
a
primary
school
there.
A.
clean
up
B.
look
up
C.
give
up
D.
set
up
13.—Please
remember
the
letter
for
me,
Mike.
—OK，I
won’t
forget
it.
A.
post
B.
posting
C.
to
post
D.
posted
14.一Where
did
you
get
these
old
doors?
—
From
the
old
houses
which
were
by
the
workers.
A.
taken
down
B.
pulled
down
C.
turned
down
D.
put
down
15.—Now
people
have
to
pay
some
money
for
bags
in
supermarkets.
—Yes.
Because
they
are
bad
for
the
environment.
A.
bin
B.
paper
C.
cloth
D.
plastic
二、完形填空
Each
one
of
us
shares
this
planet
with
seven
billion
others.
And
we
all
need????
1???
.
People
and
products
need
to
move
from
city
to
city
and
country
to
country.
However,
we
all
know
????2???
?most
cars,
motorcycles,
boats
and
planes
cause
air
pollution.
They
are
also
????3????.This
is
a
serious
problem
in
many
cities.????
4???
?inventors
are
coming
up
with
creative
ideas
to
try
to
reduce
the
pollution
and
noise.
???
In
many
cities
around
the
world,
motorcycles
are
very
????5????.
Now
Vietnam
has
around
33
million
motorcycles
and
China
has
almost
120
million.
Motorcycles
are
a
faster
and
cheaper
way
to
get
around
a
city
than
????6????.
Yet
air
pollution
is
a
growing
problem.
In
large
cities,
people
????7???
?it
is
difficult
to
breathe.
To
solve
these
problems,
a
U.
S.
company
designed
an
environmentally
friendly
motorcycle.
It
uses
electricity
as
fuel
(燃料).
As
a
result,
there
is
????8???
?pollution.
It's
also
quiet
and
fast.
This
makes
????9???
?a
good
choice
for
getting
around
a
city.
???
The
Italian
city
of
Venice
is
a
city
with
only
a
few
????10???.
There
are
no
cars
in
the
city
center.???
11???
?cars,
water
taxis
and
buses
carry
people
along
the
city's
canals
(运河).
However,
they
cause
pollution.???
12???
?to
the
water.
English
engineers
Dick
and
Jem
designed
a
solar-powered
(太阳能)
water
taxi.
The
water
taxi
????13????
run
for
a
day
after
being
recharged
(充电).
???
Planes
also
cause
air
and
noise
pollution.
Designing
an
environmentally
friendly
airplane
is
a
real
????14???
.
Some
airplane
companies
have
????15???
?to
solve
the
problems.
Swiss
engineers
have
gone
one
step
further.
They
developed
a
solar
airplane.
This
plane
holds
the
world
record
for
the
longest
solar-powered
flight—1541
kilometers
from
Arizona
to
Texas
in
America.
1.A.air????
B.food????
C.transportation????
D.communication
2.A.how????
B.why????
C.when????
D.that
3.A.noisy????
B.dirty????
C.fast????
D.expensive
4.A.Since???
?B.So???
?C.Because????
D.Although
5.A.popular????
B.valuable????
C.dangerous????
D.safe
6.A.bikes????
B.subways????
C.buses????
D.cars
7.A.explain????
B.complain????
C.doubt????
D.promise
8.A.much????
B.some????
C.no????
D.more
9.A.them????
B.you????
C.us????
D.it
10.A.rivers????
B.roads????
C.tourists????
D.people
11.A.Instead
of????
B.Thanks
to????
C.Because
of????
D.As
for
12.A.probably????
B.only????
C.especially????
D.hardly
13.A.must????
B.can????
C.should????
D.need
14.A.question????
B.job????
C.decision????
D.challenge
15.A.disagreed????
B.refused????
C.started????
D.remembered
三、阅读理解
Let
me
tell
you
something
about
sharks.
Sharks
are
among
the
oldest
animals
in
the
world.
There
are
over
three
hundred
and
fifty
kinds
of
sharks
in
the
world.
Most
sharks
are
about
two
meters
long
and
live
in
the
oceans.
A
shark
can
smell
something
in
the
water,
for
example,
the
blood
of
animals.
That
helps
them
find
their
food.
Sharks
mainly
eat
fish,
other
sharks
and
plants
in
the
ocean.
Most
sharks
bite
(咬)
people
by
mistake.
They
think
a
person
is
a
large
sea
animal.
When
the
sun
goes
down
or
comes
up,
sharks
are
looking
for
food.
So
at
these
times
people
shouldn’t
go
swimming
in
the
ocean.
Today
people
kill
sharks
for
food
and
their
skin.
The
number
of
sharks
in
the
world
is
dropping
fast.
1.
How
many
kinds
of
sharks
are
there
in
the
world?
A.
Less
than
350.
B.
More
than
350.
C.
About
200.
D.
Over
400.
2.
What
do
sharks
mainly
eat
in
the
ocean?
A.
Fish,
other
sharks
and
plants.
B.
Noodles.
C.
Rice.
D.
People.
3.
Why
do
most
sharks
bite
people
by
mistake?
A.
Because
they
think
a
person
is
dangerous.
B.
Because
they
think
a
person
is
a
large
sea
animal.
C.
Because
they
think
a
person
can
hurt
them.
D.
Because
they
think
a
person
can
take
away
their
food
4.
Why
shouldn't
people
go
swimming
in
the
ocean
when
the
sun
goes
down
or
comes
up?
A.
Sharks
are
sleeping
then.
B.
Water
is
cold
then.
C.
Sharks
are
looking
for
food
then.
D.
Sharks
are
looking
for
a
person
then.
5.
How
is
the
number
of
sharks
in
the
world
today?
A.
It
is
dropping
fast.
B.
It
is
rising
fast.
C.
It
is
not
changing.
D.
We
don't
know.
We
all
know
that
recycling
rubbish
is
very
important.
But
sometimes
it
is
not
convenient
when
we
can’t
find
a
recycling
bin
anywhere.
Now
a
team
of
middle
school
students
from
the
USA
has
solved
this
problem
by
designing
their
Recycling
Bin
app
(应用程序).
This
app
encourages
people
to
recycle.
It
provides
users
with
a
map
of
local
recycling
centers.
And
it
allows
them
to
save
places
as
favorites
on
it.
This
app
also
reminds
users
to
recycle.
The
group
of
nine
sixth-graders
is
from
STEM
Center
Middle
School.
They
came
up
with
the
idea
as
part
of
a
school
project
for
the
Verizon
Innovative
App
Challenge.
Their
school
provided
professional
app
training.
It
gave
10
teams
Samsung
tablets
(平板)as
prizes.
The
Challenge
wanted
to
develop
students’
interest
in
science，technology
and
engineering.
In
this
contest，
students
should
show
an
app
design
that
could
solve
a
problem
in
their
school
or
city.
The
nine
students
came
up
with
the
idea
for
Recycling
Bin
when
they
saw
a
need
for
more
recycling.
"We
hoped
that
this
would
really
help
a
lot
of
people,"
Jaden
Hilkemann,
12,
told
Time
For
Kids.
They
kept
their
design
easy
so
that
anyone
could
use
it.
Now
the
free
Recycling
Bin
app
has
been
put
into
use.
"I
was
so
excited
when
it
appeared
in
the
app
store,"
Seralyn
Blake，12，said.
“A
lot
of
my
family
members
downloaded
the
app.
It
was
pretty
cool.”
1.The
Recycling
Bin
app
is
designed
by
some
____.
A.
teachers
B.students
C.
scientists
D.parents
2.In
Paragraph
3,
the
underlined
word
"it"
refers
to
____.
A.
a
rubbish
bin
B.the
school
C.
the
app
D.the
rubbish
3.The
Verizon
Innovative
App
Challenge
____.
A.was
organized
by
some
students
B.was
an
app
contest
C.provided
every
student
with
a
tablet
D.encouraged
people
to
recycle
4.The
Recycling
Bin
app
is
____.
A.easy
to
use
B.expensive
to
buy
C.difficult
to
download
D.useless
in
life
5.The
best
title
for
this
passage
is
____.
A.STEM
Center
Middle
School
B.Google
Play
App
Store
C.Time
for
Recycling
D.A
Winning
App
As
you
know,
I
have
been
around
for
a
long
time,
almost
4
billion
years.
In
fact,
I
was
here
long
before
you
were
born.
Even
though
you
humans
have
not
been
around
as
long
as
I
have,
you
have
had
a
huge
effect
on
my
health.
You
have
affected
my
environment
in
special
ways，some
which
were
good,
but
most,
which
were
not.
For
the
most
part,
we
have
had
a
tense
(紧张的）relationship.
However，
things
have
started
to
improve.
Since
the
beginning
of
the
human，you
have
searched
for
methods
to
make
your
way
of
life
easier
and
more
comfortable.
You
have
produced
many
things.
In
the
process
(过程），my
health
has
been
harmed
by
your
growing
technology.
Let
me
start
with
the
Industrial
Revolution
(1750
-
1850).
You
call
this
the
birth
of
the
machine.
There
were
many
cities
crowded
with
people
in
the
United
States
and
Europe.
I
had
to
add
new
words
to
my
vocabulary
like
factories
and
pollution.
After
you
established
your
smoke
producing
factories,
you
began
to
work
on
transportation.
First,
you
tried
to
build
a
simple
vehicle.
Once
you
humans
succeeded
in
this
task,
you
decided
to
build
the
railway.
You
were
traveling
faster
and
producing
things
quicker
than
ever
before.
However,
you
were
also
using
up
my
oil
and
coal
to
make
these
machines
move.
1.Why
is
the
relationship
between
the
earth
and
humans
tense?
A.The
earth
has
a
longer
history.
B.Humans
have
affected
the
environment
of
the
earth.
C.The
earth
has
a
huge
effect
on
humans9
health.
D.Humans
have
done
something
bad
to
the
earth.
2.What
have
humans
tried
their
best
to
do?
A.Change
the
appearance
of
the
earth.
B.Improve
quality
of
life.
C.Improve
industry.
D.Protect
the
earth.
3.What
has
the
Industrial
Revolution
caused?
A.The
population
has
increased
quickly.
B.Humans
have
mostly
lived
in
Europe.
C.Environment
pollution.
D.Some
new
words
have
appeared.
4.What
does
the
last
paragraph
talk
about?
A.The
development
of
vehicles.
B.The
development
of
transportation.
C.Energy
crisis
(危机).
D.Air
pollution.
5.Which
of
the
following
is
WRONG?
A.The
relationship
of
humans
and
the
earth
is
tenser.
B.Humans
have
bad
living
conditions
now.
C.The
article
tells
a
story
about
the
earth.
D.Humans'
activities
have
affected
the
earth.
四、完成对话
A:
Hi,
Zhang
Hua,
did
you
watch
the
9
o’clock
program
on
CCTV
1
last
night?
B:
No.
①__________
A:
Environmental
protection.
②__________
B:
What
can
we
do?
A:
③__________?After
washing
something,
we
can
use
the
water
to
do
something
else.
B:
I
agree
with
you.
Also
we
must
stop
factories
from
pouring
waste
water
into
rivers
and
lakes.
④__________
A:
You’re
right.
Besides,
we
shouldn’t
use
plastic
bags,
either.
B:
Good
idea.
What
else
can
we
do?
A:
⑤__________Making
paper
takes
too
many
trees.
B:
Right.
We
should
process
waste
paper
so
that
it
can
be
used
again.
A.
If
they
keep
doing
that,
more
and
more
living
things
will
die.
B.
There
are
many
things
he
can
do.
C.
We
can
save
electricity.
D.
We
can
also
save
paper.
E.
What
was
it
about?
F.
We
can
start
by
saving
water
in
our
daily
life.
G.
It
told
us
some
good
ways
to
do
that.
五、完成句子
1.拆房容易建房难。
It’s
easier
to
houses
than
to
build
them.
2.到目前为止，我
们已经在山上种了数百棵树。
we
have
planted
hundreds
of
trees
on
the
hill.
3.我建议他不要扔掉那些旧书。
I
advised
him
not
to
those
old
books.
4.我们必须采取行动以阻止他们污染环境。
We
have
to
to
stop
them
from
polluting
the
environment.
5.老师没有惩罚那些调皮的男孩，而是耐心地对待他们。
The
teacher
treated
the
naughty
boys
patiently?______
______
______
______.
六、回答问题
The
Earth
is
about
4,600
million
years
old.
Man
has
lived
on
the
Earth
for
only
35,000
years,
but
during
that
time,
we
have
changed
our
planet
in
many
ways.
Many
of
the
things
that
we
have
done
are
good,
but
more
are
not
good
for
the
Earth.
???
Water
pollution
???
A
lot
of
people,
birds
and
fish
die
each
day
because
of
water
pollution.
Factories
have
polluted
the
water.
???
Air
pollution
???
In
big
cities,
factories,
as
well
as
cars,
trucks
and
buses
are
the
biggest
cause
of
air
pollution.
Many
people
in
cities
now
have
bad
health.
For
example,
Mexico
city
used
to
be
a
beautiful
sunny
capital,
but
today
it
is
almost
covered
by
thick
brown
clouds.
???
Soil
pollution
???
In
order
to
have
a
good
harvest,
most
of
the
farmers
use
chemicals
(化学制品)
too
much
on
their
fields.
That’s
bad
for
the
soil.
But
this
kind
of
pollution
is
difficult
to
stop.
???
Hope
for
the
future
???
These
problems
are
very
serious
for
our
future,
so
all
of
us
should
do
something
to
improve
our
environment.
If
we
can
stop
pollution,
our
planet
will
become
more
and
more
beautiful
and
our
health
will
be
better.
Let’s
be
greener
people!
1.According
to
the
passage,
how
old
is
the
Earth?
_____________________________________________________________________________________
2.How
many
kinds
of
pollution
does
the
passage
tell
us?
_____________________________________________________________________________________
3.Why
do
some
birds
and
fish
die?
_____________________________________________________________________________________
4.What
is
the
biggest
cause
of
air
pollution
in
big
cities?
_____________________________________________________________________________________
5.What
can
we
do
to
protect
our
earth?
_____________________________________________________________________________________
七、用适当形式填空
Life
will
be
peaceful
if
you
always
do
kind
things.
It
each
my
daughters
to
1.
d
a
habit
of
helping
others.
We
live
in
a
rural
(乡村的)
area.
Most
of
what
we
see
is
beautiful
nature.
One
of
the
exceptions
(例外)
to
the
beauty
is
the
rubbish
that
some
people
throw
out
of
their
car
windows.
And
there
are
no
necessary
public
2.
s
,
such
as
rubbish
collection.
A
helping
behavior
(举动)
that
I
often
3.p
with
my
daughters
is
picking
up
rubbish
in
our
neighborhood
My
daughters
often
have
a
4.m
to
see
who
can
collect
the
most
rubbish.
They
will
often
say
to
me
in
an
excited
voice,
“There’s
some
rubbish.
Daddy,
stop
the
car!”
Without
5.
t
more,
we
will
often
get
out
of
our
car
and
pick
it
up.
Though
it
may
seem
6.
s
,we
do
it.
In
fact,
we
enjoy
it.
We
pick
up
rubbish
in
parks,
on
sidewalks,
almost
7.
a
.
One
day
I
saw
a
man
I
had
never
met
before
picking
up
rubbish
on
the
road.
I
stopped
He
8.
r
his
head
and
said
to
me
with
a
smile,
“I
saw
you
doing
this
with
your
family.
It’s
a
good
idea
to
protect
our
natural
world.”
There
are
many
other
ways
to
9.
p
kindness
for
others.
You
may
share
a
dinner
with
a
beggar
(乞丐)，visit
lonely
old
people
in
the
nursing
home,
or
help
the
blind
cross
the
street.
You
can
think
of
something
that
can
be
finished
10.
e
but
helpful.
It
is
fun,
self-satisfying,
and
what’s
more,
it
can
set
a
good
example.
Helping
others
is
helping
yourself.
八、写作题
保护环境是每一个人的职责。请你写一篇以
“Lower
Carbon(低碳）,
Happier
Life”为题的英语短文。
要点：
1.自己走路或骑自行车上学，父母骑车上班（ride
a
bike,
on
foot);
2.节约用水，节约用电（save,
turn
of,
electricity);
3.将用过的课本留给低年级学生（old
books,
next
grade
students);
4.购物时带上篮子，别用塑料袋（basket,
plastic
bags)。
要求：
1.词数：80左右；
2.必须包括全部要点，但不能逐词翻译。
答案以及解析
一、单选题
1.答案：D
解析：句意为：当你出去的时候，请关灯。
turn
down意为"开小（音量、电源等）"；
turn
up意为"开大（音量、电源等）"；
turn
on意为"打开（电源等）"；
turn
off意为"关闭（电源等）"。出去应该关灯，故答案选D项。
2.答案：C
解析：句意:
—骑自行车有很多的好处。—我同意,
它对环境有益而且省钱。instruction
意为"指示";
instrument
意为"器具";
advantage
意为"好处;
优点";
product意为"产品";
根据答语可推断出,
此处是说骑自行车的好处。
3.答案：D
解析：句意为:
下个星期教室将被装饰来庆祝儿童节。decorate与主语The
classrooms之间是被动关系,
应用被动语态;
根据时间状语next
week可知此处表示将来的动作,
所以应用一般将来时的被动语态。故选D项。
4.答案：C
解析：句意：微笑不会花费什么，但是给予（人们）很多。句子主语是物，故选C。
5.答案：C
解析：考查形容词。句意：喝一点儿酒不会对你的健康有危害，只是不要喝太多。helpful"有用的"；helpless"无用的"；
harmful"有害的"；harmless"无害的"。根据句意可知选C。
6.答案：B
解析：考查情态动词辨析。句意:——许多人整天玩手机而不看书。——太糟糕了。每个人都应当成为书本爱好者。阅读更令人愉快。may“可能";should"应当”;
would"愿意”;might“也许"根据句意可知选B。
7.答案：D
解析：句意:自从几个月前的首映以来,电影《红海行动》已经获得了很多好评。根据后面的时间状语"since
its
first
show
months
ago"可知,此处要用现在完成时。
8.答案：A
解析：考查固定短语。turn
on"打开"；turn
up"开大(音量、热量等)"；turn
off"关上"；turn
down
"关小"。根据"it's
dark
now"可知，需要开灯。故选A。
9.答案：B
解析：考查固定搭配。句意:一一你知道Amy
Hayes吗？——当然了。她是用废品建了一座房子的那个女人。build
...
out
of...意为"用......建......."，是固定搭配。故选B。
10.答案：B
解析：考查固定短语。put
away"收起来"；take
away"带走"；send
away"发送"；throw
away"扔掉"。结合本题句意可知，说话人要把食物打包带走，故选B。
11.答案：D
解析：考查固定短语。句意:——你刷牙时不要让水一直流着。一一抱歉。我忘了关上了。turn
on"打开"；turn
off"关上"。代词作宾语时，要放在动词和副词之间。
根据句意可知选D。
12.答案：D
解析：考查固定短语。句意：戴维?伯特在中国的梦想是去西部建立一所小学。clean
up"清扫"；look
up"查阅";
give
up"放弃"；set
up"建立"。根据句意可知选D。
13.答案：c
解析：考查固定搭配。
remember
to
do
sth.
是固定搭配，意为"记得做某事"，指应该做或还没有做的事情，故选C。
14.答案：B
解析：考查固定短语。句意:——从哪里弄来的这些旧门？——从那些被工人拆毁的旧房子里。take
down"记下"；pull
down
"拆毁"；turn
down
"调低"；put
down
"放下;镇压"。故选B。
15.答案：D
解析：考查名词。句意:——现在，人们必须花钱在超市买塑料袋。——是的。因为它们对环境有害。bin"箱子"；
paper"纸"；cloth"布"；plastic"塑料"。根据语境可知选D。
二、完形填空
答案：1.C;
2.D;
3.A;
4.B;
5.A;
6.D;
7.B;
8.C;
9.D;
10.B;
11.A;
12.C;
13.B;
14.D;
15.C
解析：
1.由第一段第三句"People
and
products
need
to
move
from
city
to
city
and
country
to
country."可知人们需要"交通"。air空气；food食物；communication沟通。
2.句意：然而，我们都知道大多数的汽车、摩托车、船和飞机都会导致空气污染。本句含有that引导的宾语从句，that在从句中不充当任何成分，故选D项。
3.根据本段最后一句中的"reduce
the
polluion
and
noise"可知本题应该选择noisy"吵闹的"。dirty脏的；fast快的；expensive昂贵的。
4.根据前面提到的污染和噪音问题可知，"所以"发明家们正在提出有创意的想法来减少污染和噪音。故选B项。
5.根据下一句句意"现在越南已经有大约33,
000,
000辆摩托车，中国也有差不多10,
000,
000辆摩托车。"可知，此处应该选择"受欢迎的"，故选A项。valuable有价值的；dangerous危险的；safe安全的。
6.句意：摩托车是一种比汽车（cars）更快而且更便宜的市内出行的方式。bike自行车，subway地铁，bus公交车，都不具备可比性，故选D项。
7.根据上一句，"然而空气污染却成了一个日益严重的问题。"可知在"大城市里，人们抱怨（complain）连呼吸都是困难的。"故选B项。explain解释；doubt怀疑；promise许诺。
8.根据上一句"它是用电作为燃料的"，可知"它是没有（no）污染的"，much许多；some一些；more更多。
9."make+
it
+adj./n."是固定结构。本句意为"对于市内出行，这是一个不错的选择"。them他们；you你，你们；us我们。
10.根据句意"意大利城市威尼斯是一座仅有几条道路的城市"，可知应该选择B项。river河流；road道路；tourist游客；people人们。
11.
instead
of（代替）符合句意。thanks
to幸亏，由于；because
of因为；as
for至于。
12.根据句意"然而，它们引起污染，尤其（especially）对于水造成污染"可知应该选择C项。probably很可能；only仅仅，只；hardly几乎不。
13.根据句意"这种水上出租车在被充电以后，可以（can）运行一天"可知应该选择B项。must必须；should应该；need需要。
14.根据句意"设计一架环保的飞机真是一个挑战（challenge）"可知应该选择D项。question问题；job工作；decision决定。
15.根据句意"一些飞机公司已经开始解决这些问题了"可知应该选择C项。start
to
do
sth.开始做某事。disagree不同意；refuse拒绝；remember记得。
三、阅读理解
答案：BABCA
解析：
1.B
细节理解題-由第一段中的"There
are
over
three
hundred
and
fifty，different
kinds
of
sharks
in
the
world"可知，世界上有
350
多种鲨鱼。
2.A细节理解题。根据第二段中的"Sharks
mainly
eat
fish，other
sharks
and
plants
in
the
ocean"
可知，鲨鱼主要以鱼、其他鲨鱼和海洋植物为食。
3.B细节理解题。根据第三段中的"They
think
a
person
is
a
large
sea
animal"可知，鲨鱼攻击人类是因为它们误把人类当作一种大型的海洋动物。
4.C细节理解题。由第二段中的"When
the
sun
goes
down
or
comes
up，sharks
are
looking
for
food"可知，当口落或日出时，鲨鱼正在觅食。
5.A细节理解题:根据最后一段中的"The
number
of
sharks
in
the
world
is
dropping
fast"可知，鲨鱼的数量在急剧减少。
答案：BCBAD
解析：
1.B
细节理解题，根据文章第二段"Now
a
team
of
middle
school
students
from
the
USA
has
solved
this
problem
by
designing
their
Recycling
Bin
app(应用程序）"可知选B。
2.C代词指代题：结合第三段内容可知，本段主要讲这种应用程序
的特点，此处it指代the
app。
3.B推理判断題。根据文章第四段和第五段中的"In
this
contest可推知选B。
4.A细节理解题。根据文章第七段中的"They
kept
their
design
easy
so
that
anyone
could
use
it"可知A项正确；根据第七段中的"Now
the
free
Recycling
Bin
app
has
been
put
into
use"可知
B、D
两项错
误;根据最后一段中的"A
lot
of
my
family
members
downloaded
the
app"可知，C项错误c
5.D标题判断题，结合全文可知，本文主要介绍了一种获奖的应用程序，这种程序给人们提供当地垃圾回收站站点的信息，有助于促进
资源的回收利用，故选D。
答案：DBCCA
解析：
1.D细节理解题根据文章第一段可知，由于人类对地球环境的破
坏.地球与人类的关系紧张。
2.B细节理解题根据文章第二段的首句可知，人类在尽力提高自己的生活质量。
3.C细节理解题根据文章第二段可知，自工业革命以来，城市变得非常拥挤，人们诖造更多的工厂.造成了环境污染。
4.C段落大意题由文章最后一句话可知，人类已经用光了地球上的石油和煤炭等资源，造成了能源危机。
5.A细节理解题根据文章第一段最后两句可知，人类与地球的紧张关系在逐步缓和，故A项表述错误。
四、完成对话
答案：E;
G;
F;
A;
D
1
E
根据回答,没有看电视,接着询问关于什么内容。
2.G?
由下面的What
can
we
do?
推知上面的回答应该是G.
3.F?
由After
washing
something,
we
can
use
the
water
to
do
something
else.可知前面谈论的是水。
4.
A?
根据常识和句意,废弃水和物的排放会导致生物的死亡。
5.
D?
由Making
paper
takes
too
many
trees.可知是谈论的纸张。
五、完成句子
1.答案：pull
down
2.答案：So
far
3.答案：throw
away
4.答案：take
action
5.答案：instead
of
punishing
them
六、回答问题
答案：
1.About
4,600
million
years
old.
2.Three.
3.Because
of
water
pollution.
4.Factories,
as
well
as
cars,
trucks
and
buses.
5.We
should
improve
our
environment
and
stop
pollution.
七、用适当形式填空
答案：1.
develop
2.
services
3.
practice
4.
match
5.
thinking
6.
strange
7.
anywhere
8.
raised
9.
provide
10.
easily
八、写作题
答案：
Lower
Carbon,
Happier
Life
It's
our
duty
to
protect
the
environment.
The
environment
is
becoming
worse
and
worse.
We
must
do
something
to
stop
people
from
polluting
the
environment.
First
t
we
can
ride
to
school
or
go
to
school
on
foot
and
tell
our
parents
to
ride
bikes
to
work
instead
of
driving
the
car.
Second,
we
should
save
water
and
electricity
by
turning
off
the
taps
and
lights
in
time
when
we
don’t
need
them.
Third,
give
the
old
books
to
the
next
grade
students
if
we
don't
use
them
any
more.
By
doing
this,
we
can
save
many
trees.
Remember
to
go
shopping
with
a
basket
rather
than
plastic
bags.
I
believe
our
life
will
become
better
and
better
if
we
can
do
these
things.
Lower
carbon,
happier
life.
Let's
take
action.