一、单项选择
1．Don’t
be
late
for
the
9:00
meeting
because
I
am
__________
and
have
to
catch
the
11:00
train.
A．on
a
limited
budget
B．in
high
spirits
C．on
a
tight
schedule
D．in
deep
doubt
【答案】C
【解析】考查介词短语辨析。句意：9点的会议不要迟到，因为我的时间很紧，必须赶11点的火车。A.
on
a
limited
budget预算有限；B.?in?high
spirits情绪高涨；C.
on
a
tight
schedule日程很紧；D.?in?deep
doubt深度怀疑。根据句意和“have
to
catch?the?11:00
train”可知是日程安排很紧，故选C。
2．Modern
women
are
energetic,
ambitious,
and
most
of
all,
persistent
_________their
goal.
A．in
pursuit
of
B．in
return
for
C．in
touch
with
D．in
contrast
to
【答案】A
【解析】考查介词短语辨析。句意：现代女性充满活力、有抱负，最重要的是坚持追求她们的目标。A.
in
pursuit
of追求；B.
in
return
for作为……回报；C.
in
touch
with保持联系；D.
in
contrast
to与……对比鲜明。根据句意可知，此处用in
pursuit
of“追求”符合语境，故选A项。
3．Taking
on
this
challenge
will
bring
you
_____
someone
who
shares
your
interests.
A．in
exchange
for
B．in
answer
to
C．in
contact
with
D．in
memory
of
【答案】C
【解析】考查介词短语辨析。句意:接受这个挑战会让你和你有共同兴趣的人接触。A.
in
exchange
for作为交换；B.
in
answer
to回答；C.
in
contact
with接触，与……有联系；D.
in
memory
of纪念。根据空后someone
who
shares
your
interests及常识可知，此处指“和与你有共同兴趣的人接触”。故选C。
4．________
all
the
problems,
several
of
the
players
produced
excellent
performances.
A．According
to
B．Instead
of
C．In
addition
to
D．In
spite
of
【答案】D
【解析】考查介词词组。句意：尽管存在所有这些问题，几个运动员还是表现很好。A.
according
to据(……所说)；按(……所报道)；B.
instead
of代替，作为……的替换；C.
in
addition
to另外，加之，除……之外；D.
in
spite
of尽管，不管。前后形成让步关系，故选D。
5．Favorable
policies
are
________
to
encourage
employees’
professional
development.
A．in
effect
B．in
command
C．in
turn
D．in
shape
【答案】A
【解析】考查介词短语。句意：好的政策事实上都会鼓励员工专业水平的提升。A.
in
effect实际上，事实上；B.
in
command指挥；C.
in
turn轮流，依次；D.
in
shape在外形上，处于良好的状态。故选A符合语境。
二、单句语法填空
6.The
far
side
of
the
moon
is
of
particular
interest
to
scientists
because
it
has
a
lot
of
deep
craters
(环形山),
more
so
the
familiar
near
side.
【答案】than
【解析】考查介词。句意：因为它比熟悉的一面有更多的深环形山。根据空前的比较级more
so可知，此处填介词than，表示“比……更”。故填than。
7.
Oranges:
Orange
trees
are
more
decoration;
they
are
a
symbol
of
good
fortune
and
wealth.
【答案】than
【解析】句意：桔子树不仅仅是装饰品；more
than不仅仅，不只是。故填than。
8.
The
artist
was
finally
humbled
(谦卑)
by
the
greatest
artist
earth,
Mother
Nature.
【答案】on
【解析】考查介词。句意：这位艺术家最终被世界上最伟大的艺术家——大自然母亲所折服。结合句意表示“在世界上”短语为on
earth。故填on。
9.
Modern
methods
__________
tracking
polar
bear
populations
have
been
employed
only
since
the
mid-1980s.
【答案】of/for
【解析】考查介词。此处tracking
polar
bear
populations作Modern
methods的定语，用of
连接，“methods
of
doing
sth.”,意为“……的方法”，构成固定结构。或者意为“对于跟踪北极熊的方法”用for。故填of/for。
10.
We
were
first
greeted
with
the
barking
by
a
pack
__________
dogs,
seven
to
be
exact.
【答案】of
【解析】考查介词。“a
pack
of”意为“一群……”。故填of。
11.
The
answer
_____
this
question
is
not
clear.
【答案】to
【解析】考查介词。句意：这个问题的答案不清楚。the
key/answer
to
...这是固定搭配，“……的答案是……”。故填to。
12.
I
was
searching
______
these
three
western
lowland
gorillas
I'd
been
observing.
【答案】for
【解析】考查介词。search
for是固定搭配，表示“寻找”，表示“我”在寻找“我”研究的三只西部低地大猩猩。
13.
The
review
says
it
is
more
effective
at
lengthening
life
__________
walking,
cycling
or
swimming.
【答案】than
【解析】考查介词。句意：这篇报告指出跑步比散步、骑车或游泳更能有效地延长寿命。根据句中more
effective可知，本句要用比较级，比较对象前要用than。
14.
One
cup
of
coffee
__________
the
late
afternoon
or
evening
will
cause
them
to
stay
awake
almost
all
night.
【答案】in
【解析】考查介词。表示“在下午晚些时候或晚上”是in
the
late
afternoon
or
evening，介词用in，故填in。
15.
If
you
are
not
going
to
suffer
this
problem,
then
I
suggest
that
the
next
time
you
go
to
your
mum’s
home
__________
dinner,
get
a
few
cooking
tips
from
her.
【答案】for
【解析】考查介词。表示去母亲家去吃饭，表示去向、目的用介词for，故填for。
一、单项选择
1．China’s
soft
power
grows
________
the
increasing
appreciation
and
understanding
of
China
globally.
A．in
line
with
B．in
reply
to
C．in
return
for
D．in
honour
of
【答案】A
【解析】考查介词短语词义辨析及语境理解。句意：中国的软实力增长与全球对中国与日俱增的赏识和理解相一致。A.
in
line
with按照；与……一致；B.
in
reply
to答复；C.
in
return
for作为……的报答；D.
in
honour
of为纪念，为庆祝。故选A。
2．Lily
believes
she
can
control
the
outcomes
of
her
life
_______
her
hard
work.
A．by
virtue
of
B．for
the
sake
of
C．in
the
event
of
D．on
top
of
【答案】A
【解析】考查介词短语辨析。句意：Lily
相信她可以通过努力工作，来掌握自己的人生。A.
by
virtue
of凭借；B.
for
the
sake
of为了；C.
in
the
event
of万一；D.
on
top
of胜任，逼近。结合句意可知，此处用“凭借”符合语境，故选A项。
3．Member
consumers
of
our
store
can
enjoy
some
discounts
_______
their
membership
cards
when
shopping.
A．in
celebration
of
B．with
reference
to
C．on
presentation
of
D．for
submission
to
【答案】C
【解析】考查介词短语辨析。句意：本店会员消费时出示会员卡可享受一定的折扣。A.
in
celebration
of为庆祝；B.
with
reference
to关于；C.
on
presentation
of
展示；D.
for
submission
to提交给。根据句意可知此处表示“展示、出示”，故C项正确。
4．According
to
the
company’s
rule,
one’s
payment
is
______
the
work
done,
not
to
the
time
spent
doing
it.
A．in
proportion
to
B．in
addition
to
C．in
contrast
to
D．in
regard
to
【答案】A
【解析】考查介词短语辨析。句意：根据公司的规定，一个人的报酬与所做的工作成比例，而不是与所花的时间成比例。A.
in
proportion
to与……成比例；B.
in
addition
to除......之外（还有，也）；C.
in
contrast
to与……形成对照；D.
in
regard
to关于，根据题意，故选A。
5．Ding
Yanyuhang
took
part
in
a
training
session
________
the
NBA
China
game
in
Shenzhen.
A．in
accordance
with
B．in
preparation
for
C．in
preference
to
D．in
association
with
【答案】B
【解析】考查介词短语辨析。A.
in
accordance
with按照；B.
in
preparation
for准备……；C.
in
preference
to偏爱，更喜欢；
D.
in
association
with与……有联系；句意：为了准备在深圳的NBA赛事，丁彦雨航培训参加了训练。根据句意可知B项正确。
6．
________the
inborn
advantages,
Zhou
Jielun
worked
hard
before
he
became
famous
because
he
loved
music.
A．In
spite
of
B．In
common
with
C．In
place
of
D．In
time
of
【答案】A
【解析】考查介词短语辨析。A尽管；B与……一样；C代替；D在……的时候。句意：尽管周杰伦有着天生的优势，但因为他爱音乐所以在成名前他还是很努力。故选A。
考点：考查介词短语辨析。
7．As
his
son
played
a
range
of
classical
pieces
from
Mozart
to
Beethoven
smoothly,
the
father
swelled
pride.
A．of
B．with
C．into
D．from
【答案】B
【解析】考查词组搭配的使用。固定搭配swell
with
pride
骄傲自大，沾沾自喜。句意：当他的儿子演奏了一系列从莫扎特到贝多芬的经典作品时，那个父亲无比骄傲。故选B。
8．The
sports
meet,
originally
________
be
held
last
Saturday,
was
finally
put
off
because
of
the
heavy
rain.
A．due
to
B．used
to
C．equal
to
D．linked
to
【答案】A
【解析】考查介词短语辨析。句意：原定于在上个星期六举行的运动会因为大雨被推迟了。be
due
to
do
sth预定做某事；used
to过去常常；equal
to等于；linked
to联系。故选A。
二、单句语法填空
9.If
there
were
two
people
standing
before
you,
a
person
____
a
record
of
being
honest
and
a
person
who
is
known
to
be
dishonest,
who
would
you
be
more
likely
to
believe?
【答案】with
【解析】考查介词。句意：如果两个人站在你面前，一个有诚实的记录，另一个是众所周知的不诚实的人，你更可能相信哪一个？此处用with表示“具有”，故填with。
10.
So
they
started
cutting
their
meat
and
vegetables
____
small
pieces
before
they
put
them
in
the
hot
oil.
【答案】into
【解析】把肉和蔬菜切成小块。根据句意可知填into。
11.
Some
senior
high
schools
offer
courses
____
time
management.
【答案】in
【解析】考查介词。句意：一些高中开设时间管理课程。in
time
management“在时间管理上”，故答案为in。
12．She
graduated
______out
school
last
year
is
about
to
go
to
college.
【答案】from
【解析】考查固定搭配。句意：她去年从学校毕业就要上大学了。固定搭配：graduate
from“从……毕业”。故答案为from。
13．It’s
a
fantastic
opportunity
____new
students
to
get
to
know
the
school
and
the
other
students.
【答案】for
【解析】考查动词不定式复合结构中的介词。句意：对于新生来说，这是一个很好的机会去了解学校和其他学生。此处是动词不定式的复合结构：for
sb.
to
do
sth.，故答案为for。
14．How
did
you
deal
____
new
challenges?
【答案】with
【解析】考查固定词组。句意：你是如何应对新的挑战的?固定词组：deal
with“处理，应付”。故答案为with。
15．____
a
member
of
the
school
volleyball
team,
I
wasn’t
selected
for
the
end-of-year
competition.
【答案】As
【解析】考查介词。句意：作为校排球队的一员，我没有被选入年终比赛。此处as是介词，意思是“作为”，故答案为As。
16.
He
thoughtfully
(thoughtful)
included
a
“card?making”
station
he
had
set
up
with
markers
and
construction
paper
to
help
each
of
his
parents
to
privately
create
loving
anniversary
cards
____
each
other.
【答案】for
【解析】考查介词。介词短语for
each
other“相互”。他帮助父母亲相互制作周年卡片。所以要填介词for。
17.
The
team
is
working
hard
day
and
night
so
that
they
can
find
the
best
solution
______the
problem,
which
has
been
long
puzzling
the
medical
community.
【答案】to
【解析】考查介词。句意:
这个团队夜以继日地努力工作，以便找到解决这个长期困扰医学界的问题的最佳方法。solution
后加介词
to，表示“……的解决方法”。故填to。
18．Bananas
are
the
world’s
most
popular
fruit.
In
Western
countries,
they
could
account_________3%
of
a
grocer’s
2
sales.
【答案】for
【解析】考查固定短语。句意：香蕉是世界上最受欢迎的水果。在西方国家，它们可以占到杂货店销售额的3%。account
for“（比例）占”，是固定短语，根据句意，故填for。
19．His
mother
is
always
telling
him
off
______
making
a
mess
in
his
room.
【答案】for
【解析】考查介词。句意：他妈妈总是责备他把房间弄得乱七八糟。此处“把房间弄得乱七八糟”是“责备”的原因，for表示原因，故填for。
20．I
feel
what
I
am
buying
is
________great
value,
I
will
pay
the
price.
【答案】of
【解析】考查介词。句意：我觉得我买的东西很有价值，我愿意付出这个价钱。“be+of+名词”结构中的名词是抽象名词时，相当于其名词所对应的形容词的意思，说明被修饰词具有某种特征或属性。根据句意，故填of。一、单项选择
1．Don’t
be
late
for
the
9:00
meeting
because
I
am
__________
and
have
to
catch
the
11:00
train.
A．on
a
limited
budget
B．in
high
spirits
C．on
a
tight
schedule
D．in
deep
doubt
【答案】C
【解析】考查介词短语辨析。句意：9点的会议不要迟到，因为我的时间很紧，必须赶11点的火车。A.
on
a
limited
budget预算有限；B.?in?high
spirits情绪高涨；C.
on
a
tight
schedule日程很紧；D.?in?deep
doubt深度怀疑。根据句意和“have
to
catch?the?11:00
train”可知是日程安排很紧，故选C。
2．Modern
women
are
energetic,
ambitious,
and
most
of
all,
persistent
_________their
goal.
A．in
pursuit
of
B．in
return
for
C．in
touch
with
D．in
contrast
to
【答案】A
【解析】考查介词短语辨析。句意：现代女性充满活力、有抱负，最重要的是坚持追求她们的目标。A.
in
pursuit
of追求；B.
in
return
for作为……回报；C.
in
touch
with保持联系；D.
in
contrast
to与……对比鲜明。根据句意可知，此处用in
pursuit
of“追求”符合语境，故选A项。
3．Taking
on
this
challenge
will
bring
you
_____
someone
who
shares
your
interests.
A．in
exchange
for
B．in
answer
to
C．in
contact
with
D．in
memory
of
【答案】C
【解析】考查介词短语辨析。句意:接受这个挑战会让你和你有共同兴趣的人接触。A.
in
exchange
for作为交换；B.
in
answer
to回答；C.
in
contact
with接触，与……有联系；D.
in
memory
of纪念。根据空后someone
who
shares
your
interests及常识可知，此处指“和与你有共同兴趣的人接触”。故选C。
4．________
all
the
problems,
several
of
the
players
produced
excellent
performances.
A．According
to
B．Instead
of
C．In
addition
to
D．In
spite
of
【答案】D
【解析】考查介词词组。句意：尽管存在所有这些问题，几个运动员还是表现很好。A.
according
to据(……所说)；按(……所报道)；B.
instead
of代替，作为……的替换；C.
in
addition
to另外，加之，除……之外；D.
in
spite
of尽管，不管。前后形成让步关系，故选D。
5．Favorable
policies
are
________
to
encourage
employees’
professional
development.
A．in
effect
B．in
command
C．in
turn
D．in
shape
【答案】A
【解析】考查介词短语。句意：好的政策事实上都会鼓励员工专业水平的提升。A.
in
effect实际上，事实上；B.
in
command指挥；C.
in
turn轮流，依次；D.
in
shape在外形上，处于良好的状态。故选A符合语境。
二、单句语法填空
6.The
far
side
of
the
moon
is
of
particular
interest
to
scientists
because
it
has
a
lot
of
deep
craters
(环形山),
more
so
the
familiar
near
side.
【答案】than
【解析】考查介词。句意：因为它比熟悉的一面有更多的深环形山。根据空前的比较级more
so可知，此处填介词than，表示“比……更”。故填than。
7.
Oranges:
Orange
trees
are
more
decoration;
they
are
a
symbol
of
good
fortune
and
wealth.
【答案】than
【解析】句意：桔子树不仅仅是装饰品；more
than不仅仅，不只是。故填than。
8.
The
artist
was
finally
humbled
(谦卑)
by
the
greatest
artist
earth,
Mother
Nature.
【答案】on
【解析】考查介词。句意：这位艺术家最终被世界上最伟大的艺术家——大自然母亲所折服。结合句意表示“在世界上”短语为on
earth。故填on。
9.
Modern
methods
__________
tracking
polar
bear
populations
have
been
employed
only
since
the
mid-1980s.
【答案】of/for
【解析】考查介词。此处tracking
polar
bear
populations作Modern
methods的定语，用of
连接，“methods
of
doing
sth.”,意为“……的方法”，构成固定结构。或者意为“对于跟踪北极熊的方法”用for。故填of/for。
10.
We
were
first
greeted
with
the
barking
by
a
pack
__________
dogs,
seven
to
be
exact.
【答案】of
【解析】考查介词。“a
pack
of”意为“一群……”。故填of。
11.
The
answer
_____
this
question
is
not
clear.
【答案】to
【解析】考查介词。句意：这个问题的答案不清楚。the
key/answer
to
...这是固定搭配，“……的答案是……”。故填to。
12.
I
was
searching
______
these
three
western
lowland
gorillas
I'd
been
observing.
【答案】for
【解析】考查介词。search
for是固定搭配，表示“寻找”，表示“我”在寻找“我”研究的三只西部低地大猩猩。
13.
The
review
says
it
is
more
effective
at
lengthening
life
__________
walking,
cycling
or
swimming.
【答案】than
【解析】考查介词。句意：这篇报告指出跑步比散步、骑车或游泳更能有效地延长寿命。根据句中more
effective可知，本句要用比较级，比较对象前要用than。
14.
One
cup
of
coffee
__________
the
late
afternoon
or
evening
will
cause
them
to
stay
awake
almost
all
night.
【答案】in
【解析】考查介词。表示“在下午晚些时候或晚上”是in
the
late
afternoon
or
evening，介词用in，故填in。
15.
If
you
are
not
going
to
suffer
this
problem,
then
I
suggest
that
the
next
time
you
go
to
your
mum’s
home
__________
dinner,
get
a
few
cooking
tips
from
her.
【答案】for
【解析】考查介词。表示去母亲家去吃饭，表示去向、目的用介词for，故填for。
一、单项选择
1．China’s
soft
power
grows
________
the
increasing
appreciation
and
understanding
of
China
globally.
A．in
line
with
B．in
reply
to
C．in
return
for
D．in
honour
of
2．Lily
believes
she
can
control
the
outcomes
of
her
life
_______
her
hard
work.
A．by
virtue
of
B．for
the
sake
of
C．in
the
event
of
D．on
top
of
3．Member
consumers
of
our
store
can
enjoy
some
discounts
_______
their
membership
cards
when
shopping.
A．in
celebration
of
B．with
reference
to
C．on
presentation
of
D．for
submission
to
4．According
to
the
company’s
rule,
one’s
payment
is
______
the
work
done,
not
to
the
time
spent
doing
it.
A．in
proportion
to
B．in
addition
to
C．in
contrast
to
D．in
regard
to
5．Ding
Yanyuhang
took
part
in
a
training
session
________
the
NBA
China
game
in
Shenzhen.
A．in
accordance
with
B．in
preparation
for
C．in
preference
to
D．in
association
with
6．
________the
inborn
advantages,
Zhou
Jielun
worked
hard
before
he
became
famous
because
he
loved
music.
A．In
spite
of
B．In
common
with
C．In
place
of
D．In
time
of
7．As
his
son
played
a
range
of
classical
pieces
from
Mozart
to
Beethoven
smoothly,
the
father
swelled
pride.
A．of
B．with
C．into
D．from
8．The
sports
meet,
originally
________
be
held
last
Saturday,
was
finally
put
off
because
of
the
heavy
rain.
A．due
to
B．used
to
C．equal
to
D．linked
to
二、单句语法填空
9.If
there
were
two
people
standing
before
you,
a
person
____
a
record
of
being
honest
and
a
person
who
is
known
to
be
dishonest,
who
would
you
be
more
likely
to
believe?
10.
So
they
started
cutting
their
meat
and
vegetables
____
small
pieces
before
they
put
them
in
the
hot
oil.
11.
Some
senior
high
schools
offer
courses
____
time
management.
12．She
graduated
______out
school
last
year
is
about
to
go
to
college.
13．It’s
a
fantastic
opportunity
____new
students
to
get
to
know
the
school
and
the
other
students.
14．How
did
you
deal
____
new
challenges?
15．____
a
member
of
the
school
volleyball
team,
I
wasn’t
selected
for
the
end-of-year
competition.
16.
He
thoughtfully
(thoughtful)
included
a
“card?making”
station
he
had
set
up
with
markers
and
construction
paper
to
help
each
of
his
parents
to
privately
create
loving
anniversary
cards
____
each
other.
17.
The
team
is
working
hard
day
and
night
so
that
they
can
find
the
best
solution
______the
problem,
which
has
been
long
puzzling
the
medical
community.
18.
Bananas
are
the
world’s
most
popular
fruit.
In
Western
countries,
they
could
account_________3%
of
a
grocer’s
2
sales.
19．His
mother
is
always
telling
him
off
______
making
a
mess
in
his
room.
20．I
feel
what
I
am
buying
is
________great
value,
I
will
pay
the
price.
1.【答案】A
【解析】考查介词短语词义辨析及语境理解。句意：中国的软实力增长与全球对中国与日俱增的赏识和理解相一致。A.
in
line
with按照；与……一致；B.
in
reply
to答复；C.
in
return
for作为……的报答；D.
in
honour
of为纪念，为庆祝。故选A。
2.【答案】A
【解析】考查介词短语辨析。句意：Lily
相信她可以通过努力工作，来掌握自己的人生。A.
by
virtue
of凭借；B.
for
the
sake
of为了；C.
in
the
event
of万一；D.
on
top
of胜任，逼近。结合句意可知，此处用“凭借”符合语境，故选A项。
3.【答案】C
【解析】考查介词短语辨析。句意：本店会员消费时出示会员卡可享受一定的折扣。A.
in
celebration
of为庆祝；B.
with
reference
to关于；C.
on
presentation
of
展示；D.
for
submission
to提交给。根据句意可知此处表示“展示、出示”，故C项正确。
4.【答案】A
【解析】考查介词短语辨析。句意：根据公司的规定，一个人的报酬与所做的工作成比例，而不是与所花的时间成比例。A.
in
proportion
to与……成比例；B.
in
addition
to除......之外（还有，也）；C.
in
contrast
to与……形成对照；D.
in
regard
to关于，根据题意，故选A。
5.【答案】B
【解析】考查介词短语辨析。A.
in
accordance
with按照；B.
in
preparation
for准备……；C.
in
preference
to偏爱，更喜欢；
D.
in
association
with与……有联系；句意：为了准备在深圳的NBA赛事，丁彦雨航培训参加了训练。根据句意可知B项正确。
6.【答案】A
【解析】考查介词短语辨析。A尽管；B与……一样；C代替；D在……的时候。句意：尽管周杰伦有着天生的优势，但因为他爱音乐所以在成名前他还是很努力。故选A。
7.【答案】B
【解析】考查词组搭配的使用。固定搭配swell
with
pride
骄傲自大，沾沾自喜。句意：当他的儿子演奏了一系列从莫扎特到贝多芬的经典作品时，那个父亲无比骄傲。故选B。
8.【答案】A
【解析】考查介词短语辨析。句意：原定于在上个星期六举行的运动会因为大雨被推迟了。be
due
to
do
sth预定做某事；used
to过去常常；equal
to等于；linked
to联系。故选A。
9.【答案】with
【解析】考查介词。句意：如果两个人站在你面前，一个有诚实的记录，另一个是众所周知的不诚实的人，你更可能相信哪一个？此处用with表示“具有”，故填with。
10.【答案】into
【解析】把肉和蔬菜切成小块。根据句意可知填into。
11.【答案】in
【解析】考查介词。句意：一些高中开设时间管理课程。in
time
management“在时间管理上”，故答案为in。
12.【答案】from
【解析】考查固定搭配。句意：她去年从学校毕业就要上大学了。固定搭配：graduate
from“从……毕业”。故答案为from。
13.【答案】for
【解析】考查动词不定式复合结构中的介词。句意：对于新生来说，这是一个很好的机会去了解学校和其他学生。此处是动词不定式的复合结构：for
sb.
to
do
sth.，故答案为for。
14.【答案】with
【解析】考查固定词组。句意：你是如何应对新的挑战的?固定词组：deal
with“处理，应付”。故答案为with。
15.【答案】As
【解析】考查介词。句意：作为校排球队的一员，我没有被选入年终比赛。此处as是介词，意思是“作为”，故答案为As。
16.【答案】for
【解析】考查介词。介词短语for
each
other“相互”。他帮助父母亲相互制作周年卡片。所以要填介词for。
17.【答案】to
【解析】考查介词。句意:
这个团队夜以继日地努力工作，以便找到解决这个长期困扰医学界的问题的最佳方法。solution
后加介词
to，表示“……的解决方法”。故填to。
18.【答案】for
【解析】考查固定短语。句意：香蕉是世界上最受欢迎的水果。在西方国家，它们可以占到杂货店销售额的3%。account
for“（比例）占”，是固定短语，根据句意，故填for。
19.【答案】for
【解析】考查介词。句意：他妈妈总是责备他把房间弄得乱七八糟。此处“把房间弄得乱七八糟”是“责备”的原因，for表示原因，故填for。
20.【答案】of
【解析】考查介词。句意：我觉得我买的东西很有价值，我愿意付出这个价钱。“be+of+名词”结构中的名词是抽象名词时，相当于其名词所对应的形容词的意思，说明被修饰词具有某种特征或属性。根据句意，故填of。
