人教版(2019)必修二:Unit 4 History and traditions课时训练2(含答案)

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高中英语新人教版必修二第四单元课时训练2
题组A基础巩固
Ⅰ单句语法填空
1.They
make
great
gifts
and
you
see
them
many
times
    (decorate)
with
red
envelopes
and
messages
of
good
fortune.
2.The
players    (select)
from
the
whole
country
are
expected
to
bring
us
honor
in
this
summer
game.
3.Even
the
best
writers
sometimes
find
themselves    (lose)
for
words.
4.The
living
room
is
clean
and
tidy,with
a
dining
table
already    (lay)
for
a
meal
to
be
cooked.
5.Jim
has
retired,but
he
still
remembers
the
happy
time    (spend)
with
his
students.
6.The
park
was
full
of
people,    (enjoy)
themselves
in
the
sunshine.
7.There
are
still
many
problems    (solve)
before
we
are
ready
for
a
long
stay
on
the
Moon.
8.The
manager
was
satisfied
to
see
many
new
products    (develop)
after
great
effort.
9.Having
passed
all
the
tests,she
felt
a
great
weight    (take)
off
her
mind.
10.The
students
wouldn’t
like
the
problem    (discuss)
at
the
moment.
Ⅱ单句写作
1.所有的工作都做完了,我现在觉得很轻松。(with复合结构;do)
            ,I
feel
very
relaxed
now.
2.她为她的长头发感到骄傲,所以她不愿意将它剪短。(have+宾语+宾语补足语)
She
feels
proud
of
her
long
hair,so         .
3.当他醒来时,他发现自己被一群孩子围着。(find+宾语+宾语补足语)
When
he
woke
up, 
.
4.在那场事故中受伤的男孩被送到医院了。
(injure)
            was
taken
to
hospital.
5.她把为野餐准备的蜂蜜放入她的篮子里。(prepare)
She
put
 
into
her
basket.

Ⅲ改为同义句
1.He
spoke
slowly
to
make
others
understand
him.
→He
spoke
slowly
to    
        .
2.I
am
very
busy
now.I’d
like
to
ask
someone
to
take
my
little
child
to
school.
→I
am
very
busy
now.I’d
like
to    my
little
child    to
school.
3.Do
you
like
to
read
the
novel
which
is
written
by
Han
Han
→Do
you
like
to
read
the
novel    
    Han
Han
4.The
exam
which
will
be
held
next
week
is
quite
important.
→The
exam    
        next
week
is
quite
important.
5.Judy
fixed
her
eyes
on
Van
Gogh’s
Sunflower.
→Judy
                on
Van
Gogh’s
Sunflower.
参考答案:
Ⅰ.单句语法填空
1
decorated
2
selected
3
lost
4
laid
5
spent
6
enjoying
7
to
be
solved
8
developed
9
taken
10
discussed
Ⅱ.单句写作
1
With
all
the
work
done
2
she
won’t
have
it
cut
short
3
he
found
himself
surrounded
by
a
group
of
children
4
The
boy
injured
in
the
accident
5
the
honey
prepared
for
the
picnic
Ⅲ.改为同义句
1
make
himself
understood
2
have;taken
3
written
by
4
to
be
held
5
had/kept
her
eyes
fixed
题组B高考提升
Ⅰ语法填空
Longjing
tea, 1 
has
topped
the
list
of
the
ten
most
famous
teas
in
China
with
its
color,taste
and
shape, 2 (name)
after
its
production
region—Longjing
Village
of
West
Lake.The
good
environment
and
water
resources
have
contributed
much
to
the
 3 (grow)
of
the
tea,confirming
the
saying
that
“Longjing
tea
is
the
 4 (good)
among
all
of
the
teas
in
the
world”.
Thanks
 5 
the
Qianlong
Emperor
of
the
Qing
Dynasty,the
tea
has
earned
a
high
reputation.The
story
went
that
the
Qianlong
Emperor
visited
a
mountain
during
his
Hangzhou
travels,and
he
saw
some
ladies
picking
the
tea
at
 6 
foot
of
the
mountain.He
was
so
interested
in
their
movements
that
he
decided
to
have
a
go
himself.
While
 7 (pick)
the
tea,he
received
the
news
of
his
mother’s
illness,so
he
carelessly
put
the
leaves
in
his
right
sleeve
and
 8 (leave)
Hangzhou
for
Beijing.He
visited
his
mother
 9 (immediate)
upon
his
arrival
in
Beijing,and
his
mother
smelt
the
fragrance
of
the
tea
leaves
from
his
right
sleeve
and
wanted
to
have
a
taste.After
drinking
a
cup
of
tea,she
found
herself
completely
 10 (refresh),and
she
even
praised
it
as
a
cure
for
all
illnesses.From
then
on,it
was
listed
as
the
tribute
tea.
1.  2.  3.
4.  5.  
6.
7.  
8.  9.
10.
Ⅱ完形填空
My
83-year-old
mother
came
to
live
with
me
a
year
ago
last
November.She
was
very
ill
and
I
had
to
put
my
life
on
hold
to
 1 
her.
Each
morning,I
got
her
up
and
 2 
her
and
made
her
breakfast,and
sat
with
her.I
rushed
for
a
bowl
when
she
felt
sick,and
lit
fires
to
keep
her
warm.I
cooked
and
 3 
her
to
take
a
few
bites.
It’s
a
hard
job
caring
for
a
sick
or
dying
parent,whoever
you
are.But
it
was
 4 
hard
for
me,a
doctor
myself.I
couldn’t
help
treating
her
in
two
different
ways.The
medical
professional
in
me
led
me
to
examine
her
in
 5 
as
if
she
were
my
patient.As
a
 6 ,I
saw
the
woman
who
had
given
birth
to
me,wiped
my
nose,sent
me
to
college
and
had
been
 7 
presence
in
my
life
for
over
half
a
century.
Also,my
mother
didn’t
 8 
my
hard
work
or
understand
that
other
people’s
help
could
have
 9 
the
burden.
None
of
the
treatments
her
doctors
gave
her
 10 ,and
finally
her
life
became
about
comfort.When
finally
she
accepted
the
painkillers,she
accepted
the
fact
that
she
would
 11 .
Illness
and
need
took
us
across
personal
boundary
I’d
never
before
considered.We
used
to
argue
a
lot, 12 
during
this
time
we
shared
stories
and
memories
and
we
became
 13 .
When
the
 14 
came,we
accepted
the
fact
that
we
looked
at
the
world
in
different
ways,but
what
 15 
was
that
we
loved
each
other.
1.A.put
up
with 
B.refer
to
C.care
for
D.take
pride
in
2.A.dressed
B.taught
C.evaluated
D.demanded
3.A.warned
B.forced
C.permitted
D.persuaded
4.A.especially
B.naturally
C.proudly
D.acceptably
5.A.enthusiasm
B.curiosity
C.regret
D.coldness
6.A.nurse
B.daughter
C.doctor
D.professor
7.A.constant
B.occasional
C.dramatic
D.fortunate
8.A.enjoy
B.challenge
C.appreciate
D.instruct
9.A.got
off
B.paid
off
C.turned
off
D.taken
off
10.A.thought
B.changed
C.worked
D.performed
11.A.die
B.recover
C.defeat
D.improve
12.A.so
B.but
C.and
D.or
13.A.rougher
B.tougher
C.closer
D.harder
14.A.accident
B.chances
C.event
D.end
15.A.ignored
B.mattered
C.passed
D.affected
Ⅲ阅读理解
Plants
cannot
run
or
hide,so
they
need
other
strategies
to
avoid
being
eaten.Some
curl
up
their
leaves,others
produce
chemicals
to
make
themselves
taste
bad
if
they
sense
animals
drooling
on
them,chewing
them
up
or
laying
eggs
on
them—all
signals
of
an
attack.New
research
now
shows
some
flora
can
feel
a
plant-eating
animal
well
before
it
launches
an
attack,letting
a
plant
prepare
a
preemptive(先发制人的)
defense
that
even
works
against
other
pest
species.
When
ecologist
John
Orrock
of
the
University
of
Wisconsin-Madison
sprayed
snail
slime—a
liquid
the
animals
release
as
they
slide
along—onto
soil,nearby
tomato
plants
appeared
to
notice.They
increased
their
levels
of
an
enzyme(酶),which
is
known
to
prevent
plant-eating
animals.“None
of
the
plants
were
ever
actually
attacked,”Orrock
says.“We
just
gave
them
cues
that
suggested
an
attack
was
coming,and
that
was
enough
to
cause
big
changes
in
their
chemistry.”
Initially
Orrock
found
this
defense
worked
against
snails;
in
the
latest
study,his
team
measured
the
slimy
warning’s
impact
on
another
potential
threat.The
investigators
found
that
hungry
caterpillars(毛虫),which
usually
eat
tomato
leaves
greedily,had
no
appetite
for
them
after
the
plants
were
exposed
to
snail
slime
and
activated
their
chemical
resistance.“This
nonspecific
defense
may
be
a
strategy
that
benefits
the
plants
by
further
improving
their
overall
possibilities
of
survival,”says
Orrock,who
reported
the
results
with
his
colleagues
in
March
in
Oecologia.
The
finding
that
a
snail’s
approach
can
cause
a
plant
response
that
affects
a
different
animal
made
Richard
Karban
curious,a
plant
communications
expert,who
was
not
involved
in
the
study.“It
is
significant
that
the
plants
are
responding
before
being
damaged
and
that
these
cues
are
having
such
far-ranging
effects,”
Karban
says.The
research
was
comprehensive,he
adds,but
he
wonders
how
the
tomato
plants
felt
chemicals
in
snail
slime
that
never
actually
touched
them.
“That’s
the
million-dollar
question,”Orrock
says.He
hopes
future
research
will
make
out
the
mechanisms
that
enable
plants
to
sense
these
relatively
distant
cues.
1.John
Orrock
sprayed
a
liquid
onto
soil
near
tomato
plants
to
    .
A.make
them
grow
better
B.give
them
a
warning
C.keep
plant-eating
animals
away
D.inform
plant-eating
animals
of
danger
2.Why
is
the
example
of
caterpillars
mentioned
in
Paragraph
3
A.To
introduce
another
animal.
B.To
confirm
the
result
of
the
study.
C.To
appeal
to
people
to
protect
animals.
D.To
analyze
different
resistance
chemicals.
3.What
does
Richard
Karban
really
want
to
know
A.How
tomato
plants
become
aware
of
danger.
B.What
the
chemicals
in
the
snail
slime
are.
C.Whether
the
research
is
of
practical
value.
D.What
the
finding
of
the
research
is.
4.What
can
be
a
suitable
title
for
the
text
A.Watchful
Plants
B.Greedy
Animals
C.A
Snail’s
Approach
D.A
Defense
Attack
参考答案:
Ⅰ.语法填空
本文是一篇说明文,主要介绍了西湖龙井茶盛名的由来。
1
which 【解析】根据句意并分析句子结构可知,此处为非限制性定语从句,且从句中缺少主语,先行词为表示物的“Longjing
tea”,所以用which引导该定语从句。
2
is
named 【解析】分析句子结构可知,此处主语“Longjing
tea”与动词name之间为被动关系且叙述一般的情况,所以用一般现在时的被动语态。
3
growth 【解析】良好的环境和水资源对茶的生长贡献良多。根据空前的定冠词和空后的“of
the
tea”可知此处应用名词growth。
4
best 【解析】龙井茶是世界上所有茶叶中最好的。根据语境可知,此处用形容词的最高级,且由空前的定冠词the及空后的“among
all
of
the
teas
in
the
world”也可知应用形容词的最高级。
5
to 【解析】thanks
to
意为“幸亏,由于”,为固定搭配。
6
the 【解析】他看见一些女士在山脚下采茶叶。此处“at
the
foot
of
the
mountain”意为“在山脚下”,为固定用法。
7
picking 【解析】根据句意并分析句子结构可知,此处为分词做状语,动词pick与其逻辑主语he之间为主谓关系,所以用现在分词。
8
left 【解析】本段叙述的是发生在过去的事,所以用一般过去时。
9
immediately 【解析】他一到北京,就立即去看望母亲。此处修饰动词visited应用副词形式。
10
refreshed 【解析】喝了一杯茶后,她发现自己完全恢复了精神。find
oneself+adj.意为“发现某人自己……”,此处用形容词做宾语补足语。
Ⅱ.完形填空
本文是一篇记叙文。文章叙述了作者照顾病重的母亲。在病重期间,作者和母亲的关系变得更亲密。母亲最终还是去世了,作者认为母女之间的爱才是最重要的。
1
C 【解析】句意:
她病得很重,为了照顾她,我不得不把我的生活放在一边。put
up
with忍受;refer
to参考,涉及到;care
for关心,照顾;take
pride
in为……而骄傲。故选C项。
2
A 【解析】句意:每天早上,她起床后,我给她穿好衣服,给她做早餐,然后陪她坐着。dress穿衣;teach教;evaluate评估;demand要求。故选A项。
3
D 【解析】上文提到“when
she
felt
sick”,作者的母亲病得很重,常常感到恶心,可能吃不下饭,作者就劝母亲吃点。故选D项。
4
A 【解析】根据下文“The
medical
professional
in
me
led
me
to
examine
her
in
 5 
as
if
she
were
my
patient.”可知,作为一名医生,作者得像对待其他患者一样对待母亲,而作者觉得特别难做到。故选A项。
5
D 【解析】句意:我的医生职业使得我以冷漠的态度给她做检查,好像她是我的病人。enthusiasm热情;curiosity好奇;regret后悔;coldness冷漠。故选D项。
6
B 【解析】
根据“the
woman
who
had
given
birth
to
me”可知,此时作者从一个女儿的角度来看待母亲。故选B项。
7
A 【解析】
句意:作为一个女儿,我看到了那个生我的女人,她给我擦鼻子,送我上大学,半个多世纪以来她一直在我的生活中。
constant不变的;occasional偶尔的;dramatic戏剧性的;fortunate幸运的。故选A项。
8
C 【解析】
句意:同时,我的母亲并不赏识我的努力付出,也不理解其他人的帮助可以减轻我的负担。
enjoy喜欢;challenge挑战;appreciate欣赏;instruct指示。故选C项。
9
D 【解析】
根据“other
people s
help”可知,其他人的帮助可以减轻作者的负担,但是母亲不理解。get
off下车;pay
off偿清;turn
off关掉;take
off减轻,减去。take
off
the
burden卸下重担。故选D项。
10
C 【解析】
根据下文“finally
she
accepted
the
painkillers”可知,治疗不起作用,母亲最后只能接受靠止疼片维持生命。work起作用。故选C项。
11
A 【解析】
句意:当她最终接受止痛药时,她接受了自己会死去的事实。
故选A项。
12
B 【解析】
句意:我们以前经常吵架,但在这段时间里,我们分享了故事和回忆,我们变得更亲密了。故选B项。
13
C 【解析】
根据“we
shared
stories
and
memories”可知,作者和母亲关系更亲密。rougher更粗糙的;tougher更困难的;closer
更亲密的;harder更难的。故选C项。
14
D 【解析】
句意:当母亲生命走到尽头时,我们接受了这样一个事实:我们用不同的方式看待这个世界。故选D项。
15
B 【解析】
虽然作者和母亲的观点不一致,
但重要的是她们彼此相爱。ignore忽视;matter重要;pass通过,经过;affect影响。故选B项。
Ⅲ.阅读理解
本文是一篇说明文,主要介绍了一项新的科学研究,研究表明植物会对外在的威胁相当警觉,会自动作出反应进行自我保护。
1
B 【解析】
根据第二段最后一句可推知,John
Orrock在西红柿植株附近的泥土上喷洒液体的目的是给予植物一种警告,让它们能够产生自我保护性反应,且与第三段第一句呼应,故选B。
2
B 【解析】推理判断题。根据第三段第一句可推知,文章中提到毛虫的例子是为了验证研究的结果,故选B。
3
A 【解析】推理判断题。根据第四段最后一句和对最后一段的整体理解可推知,Richard
Karban实际上想了解的是西红柿植株是如何意识到危险的,故选A。
4
A 【解析】标题判断题。根据文章中的关键词plant,并结合对全文的整体理解可推知,本文主要介绍的是有关植物的科学研究,研究发现植物有对外在威胁或攻击的自我保护性反应,故选A。高中英语新人教版必修二第四单元课时训练2
题组A基础巩固
Ⅰ单句语法填空
1.They
make
great
gifts
and
you
see
them
many
times
    (decorate)
with
red
envelopes
and
messages
of
good
fortune.
2.The
players    (select)
from
the
whole
country
are
expected
to
bring
us
honor
in
this
summer
game.
3.Even
the
best
writers
sometimes
find
themselves    (lose)
for
words.
4.The
living
room
is
clean
and
tidy,with
a
dining
table
already    (lay)
for
a
meal
to
be
cooked.
5.Jim
has
retired,but
he
still
remembers
the
happy
time    (spend)
with
his
students.
6.The
park
was
full
of
people,    (enjoy)
themselves
in
the
sunshine.
7.There
are
still
many
problems    (solve)
before
we
are
ready
for
a
long
stay
on
the
Moon.
8.The
manager
was
satisfied
to
see
many
new
products    (develop)
after
great
effort.
9.Having
passed
all
the
tests,she
felt
a
great
weight    (take)
off
her
mind.
10.The
students
wouldn’t
like
the
problem    (discuss)
at
the
moment.
Ⅱ单句写作
1.所有的工作都做完了,我现在觉得很轻松。(with复合结构;do)
            ,I
feel
very
relaxed
now.
2.她为她的长头发感到骄傲,所以她不愿意将它剪短。(have+宾语+宾语补足语)
She
feels
proud
of
her
long
hair,so         .
3.当他醒来时,他发现自己被一群孩子围着。(find+宾语+宾语补足语)
When
he
woke
up, 
.
4.在那场事故中受伤的男孩被送到医院了。
(injure)
            was
taken
to
hospital.
5.她把为野餐准备的蜂蜜放入她的篮子里。(prepare)
She
put
 
into
her
basket.

Ⅲ改为同义句
1.He
spoke
slowly
to
make
others
understand
him.
→He
spoke
slowly
to    
        .
2.I
am
very
busy
now.I’d
like
to
ask
someone
to
take
my
little
child
to
school.
→I
am
very
busy
now.I’d
like
to    my
little
child    to
school.
3.Do
you
like
to
read
the
novel
which
is
written
by
Han
Han
→Do
you
like
to
read
the
novel    
    Han
Han
4.The
exam
which
will
be
held
next
week
is
quite
important.
→The
exam    
        next
week
is
quite
important.
5.Judy
fixed
her
eyes
on
Van
Gogh’s
Sunflower.
→Judy
                on
Van
Gogh’s
Sunflower.
题组B高考提升
Ⅰ语法填空
Longjing
tea, 1 
has
topped
the
list
of
the
ten
most
famous
teas
in
China
with
its
color,taste
and
shape, 2 (name)
after
its
production
region—Longjing
Village
of
West
Lake.The
good
environment
and
water
resources
have
contributed
much
to
the
 3 (grow)
of
the
tea,confirming
the
saying
that
“Longjing
tea
is
the
 4 (good)
among
all
of
the
teas
in
the
world”.
Thanks
 5 
the
Qianlong
Emperor
of
the
Qing
Dynasty,the
tea
has
earned
a
high
reputation.The
story
went
that
the
Qianlong
Emperor
visited
a
mountain
during
his
Hangzhou
travels,and
he
saw
some
ladies
picking
the
tea
at
 6 
foot
of
the
mountain.He
was
so
interested
in
their
movements
that
he
decided
to
have
a
go
himself.
While
 7 (pick)
the
tea,he
received
the
news
of
his
mother’s
illness,so
he
carelessly
put
the
leaves
in
his
right
sleeve
and
 8 (leave)
Hangzhou
for
Beijing.He
visited
his
mother
 9 (immediate)
upon
his
arrival
in
Beijing,and
his
mother
smelt
the
fragrance
of
the
tea
leaves
from
his
right
sleeve
and
wanted
to
have
a
taste.After
drinking
a
cup
of
tea,she
found
herself
completely
 10 (refresh),and
she
even
praised
it
as
a
cure
for
all
illnesses.From
then
on,it
was
listed
as
the
tribute
tea.
1.  2.  3.
4.  5.  
6.
7.  
8.  9.
10.
Ⅱ完形填空
My
83-year-old
mother
came
to
live
with
me
a
year
ago
last
November.She
was
very
ill
and
I
had
to
put
my
life
on
hold
to
 1 
her.
Each
morning,I
got
her
up
and
 2 
her
and
made
her
breakfast,and
sat
with
her.I
rushed
for
a
bowl
when
she
felt
sick,and
lit
fires
to
keep
her
warm.I
cooked
and
 3 
her
to
take
a
few
bites.
It’s
a
hard
job
caring
for
a
sick
or
dying
parent,whoever
you
are.But
it
was
 4 
hard
for
me,a
doctor
myself.I
couldn’t
help
treating
her
in
two
different
ways.The
medical
professional
in
me
led
me
to
examine
her
in
 5 
as
if
she
were
my
patient.As
a
 6 ,I
saw
the
woman
who
had
given
birth
to
me,wiped
my
nose,sent
me
to
college
and
had
been
 7 
presence
in
my
life
for
over
half
a
century.
Also,my
mother
didn’t
 8 
my
hard
work
or
understand
that
other
people’s
help
could
have
 9 
the
burden.
None
of
the
treatments
her
doctors
gave
her
 10 ,and
finally
her
life
became
about
comfort.When
finally
she
accepted
the
painkillers,she
accepted
the
fact
that
she
would
 11 .
Illness
and
need
took
us
across
personal
boundary
I’d
never
before
considered.We
used
to
argue
a
lot, 12 
during
this
time
we
shared
stories
and
memories
and
we
became
 13 .
When
the
 14 
came,we
accepted
the
fact
that
we
looked
at
the
world
in
different
ways,but
what
 15 
was
that
we
loved
each
other.
1.A.put
up
with 
B.refer
to
C.care
for
D.take
pride
in
2.A.dressed
B.taught
C.evaluated
D.demanded
3.A.warned
B.forced
C.permitted
D.persuaded
4.A.especially
B.naturally
C.proudly
D.acceptably
5.A.enthusiasm
B.curiosity
C.regret
D.coldness
6.A.nurse
B.daughter
C.doctor
D.professor
7.A.constant
B.occasional
C.dramatic
D.fortunate
8.A.enjoy
B.challenge
C.appreciate
D.instruct
9.A.got
off
B.paid
off
C.turned
off
D.taken
off
10.A.thought
B.changed
C.worked
D.performed
11.A.die
B.recover
C.defeat
D.improve
12.A.so
B.but
C.and
D.or
13.A.rougher
B.tougher
C.closer
D.harder
14.A.accident
B.chances
C.event
D.end
15.A.ignored
B.mattered
C.passed
D.affected
Ⅲ阅读理解
Plants
cannot
run
or
hide,so
they
need
other
strategies
to
avoid
being
eaten.Some
curl
up
their
leaves,others
produce
chemicals
to
make
themselves
taste
bad
if
they
sense
animals
drooling
on
them,chewing
them
up
or
laying
eggs
on
them—all
signals
of
an
attack.New
research
now
shows
some
flora
can
feel
a
plant-eating
animal
well
before
it
launches
an
attack,letting
a
plant
prepare
a
preemptive(先发制人的)
defense
that
even
works
against
other
pest
species.
When
ecologist
John
Orrock
of
the
University
of
Wisconsin-Madison
sprayed
snail
slime—a
liquid
the
animals
release
as
they
slide
along—onto
soil,nearby
tomato
plants
appeared
to
notice.They
increased
their
levels
of
an
enzyme(酶),which
is
known
to
prevent
plant-eating
animals.“None
of
the
plants
were
ever
actually
attacked,”Orrock
says.“We
just
gave
them
cues
that
suggested
an
attack
was
coming,and
that
was
enough
to
cause
big
changes
in
their
chemistry.”
Initially
Orrock
found
this
defense
worked
against
snails;
in
the
latest
study,his
team
measured
the
slimy
warning’s
impact
on
another
potential
threat.The
investigators
found
that
hungry
caterpillars(毛虫),which
usually
eat
tomato
leaves
greedily,had
no
appetite
for
them
after
the
plants
were
exposed
to
snail
slime
and
activated
their
chemical
resistance.“This
nonspecific
defense
may
be
a
strategy
that
benefits
the
plants
by
further
improving
their
overall
possibilities
of
survival,”says
Orrock,who
reported
the
results
with
his
colleagues
in
March
in
Oecologia.
The
finding
that
a
snail’s
approach
can
cause
a
plant
response
that
affects
a
different
animal
made
Richard
Karban
curious,a
plant
communications
expert,who
was
not
involved
in
the
study.“It
is
significant
that
the
plants
are
responding
before
being
damaged
and
that
these
cues
are
having
such
far-ranging
effects,”
Karban
says.The
research
was
comprehensive,he
adds,but
he
wonders
how
the
tomato
plants
felt
chemicals
in
snail
slime
that
never
actually
touched
them.
“That’s
the
million-dollar
question,”Orrock
says.He
hopes
future
research
will
make
out
the
mechanisms
that
enable
plants
to
sense
these
relatively
distant
cues.
1.John
Orrock
sprayed
a
liquid
onto
soil
near
tomato
plants
to
    .
A.make
them
grow
better
B.give
them
a
warning
C.keep
plant-eating
animals
away
D.inform
plant-eating
animals
of
danger
2.Why
is
the
example
of
caterpillars
mentioned
in
Paragraph
3
A.To
introduce
another
animal.
B.To
confirm
the
result
of
the
study.
C.To
appeal
to
people
to
protect
animals.
D.To
analyze
different
resistance
chemicals.
3.What
does
Richard
Karban
really
want
to
know
A.How
tomato
plants
become
aware
of
danger.
B.What
the
chemicals
in
the
snail
slime
are.
C.Whether
the
research
is
of
practical
value.
D.What
the
finding
of
the
research
is.
4.What
can
be
a
suitable
title
for
the
text
A.Watchful
Plants
B.Greedy
Animals
C.A
Snail’s
Approach
D.A
Defense
Attack