内容正文:
限时训练2025.9.27答案
1 . ADA 4. ADBD 8. BBDC 12. BBCD 16. FAGDC 21. BDCCA 26. DABCA 31. BBDAC
C 篇【导语】本文是一篇说明文。主要介绍凤梨科植物在清除空气中挥发性有机化合物(VOCs)方面表现出色,及其净化空气的原理和相关研究计划。
8.细节理解题。根据第二段中的“Chemist Vadoud Niri’s found that a single bromeliad can remove at least 80 percent of six different VOCs from the air inside a 76-liter container. His team tested five houseplants against eight VOCs, finding bromeliads outperformed others.(化学家Vadoud Niri发现,在76升的容器中,一株凤梨科植物能清除空气中至少80%的六种不同挥发性有机化合物。他的团队用八种挥发性有机化合物对五种室内植物进行了测试,发现凤梨科植物的表现优于其他植物。)”可知,Niri关于凤梨科植物的发现之一是在测试中它们在清除挥发性有机化合物方面领先。故选B项。
9.细节理解题。根据第三段中的“Plants absorb VOCs from the air, explains medicinal chemist Webe Kadima. Those gases enter through tiny openings in plant leaves and stems. Once inside, the plant’s enzymes (酶) break down the VOCs into smaller, harmless chemicals.(药用化学家Webe Kadima解释说,植物从空气中吸收挥发性有机化合物。这些气体通过植物叶子和茎上的微小开口进入。一旦进入,植物的酶会将挥发性有机化合物分解成更小的无害化学物质。)”可知,Webe Kadima在第三段试图解释植物清除污染物的过程。故选B项。
10.细节理解题。根据第五段中的“Niri says he plans to test how many houseplants it takes to clean the air in an average-size room. After that, he will repeat the experiment in a nail salon.(Niri说,他计划测试在一个普通大小的房间里需要多少室内植物才能净化空气。之后,他将在一家美甲沙龙重复这个实验。)”可知,Niri的研究重点将是测试植物在更大空间里的表现。故选D项。
11.主旨大意题。根据文章第一段“Though they are not the flashiest of houseplants, some pollution scientists are ready to give them credit. Their new data show these plants are experts at cleaning the air.(尽管这些植物并非是最引人注目的室内植物,但一些污染研究专家却愿意认可它们的作用。他们的最新研究结果表明,这些植物是净化空气的能手。)”以及文章内容可知,文章主要围绕凤梨科植物展开,介绍了其在清除空气中挥发性有机化合物方面的出色能力、净化原理以及相关研究,因此“凤梨科植物:大自然的空气净化器”最适合作为本文标题。故选C项。
完形 【导语】本文是一篇记叙文。主要讲述了作者带女儿登山在熟悉的树林迷路,手机失灵无法确认位置后凭周围环境找到路,领悟到不应该习惯性依赖科技。
21.考查名词词义辨析。句意:所以,当我发现自己在那里迷路时,这真是一件令人震惊的事情。A. challenge挑战;B. shock令人震惊的事;C. reward奖励;D. reminder引起回忆的事物,提醒人的事物。根据上文“I’d been exploring the 40-hectare woods around our cottage my whole life and I knew the way well.”以及下文“when I found myself lost there”可知,作者对这片树林很熟悉,却在里面迷路了,这是件令人震惊的事。故选B。
22.考查名词词义辨析。句意:二月的一个阴沉寒冷的下午,我突然有一种冲动,要和我的两个女儿一起去爬山。A. discovery发现;B. response回答,反应;C. worry担心;D. urge冲动。根据上文“One dull cold February afternoon, I had a sudden”以及下文“to hike the hill with my two daughters”可知,作者在这寒冷的下午突然想和女儿们去爬山,即突然有和女儿们去爬山的冲动。故选D。
23.考查动词词义辨析。句意:我们穿上雪鞋,立即向西北方向走去。A. escaped逃跑;B. drove开车;C. headed朝……方向去;D. looked看。根据下文“northwestward”以及语境可知,作者一行人要去爬山,此处表示作者一行人朝西北方向走。故选C。
24.考查名词词义辨析。句意:这些真的让她们开心了一整天。A. reputation名声;B. dream梦想;C. day一天;D. way路。根据上文“While making our way up the hill, my daughters stopped occasionally to investigate unknown plants and to look at the abandoned deer beds...”以及下文中“enthusiasm”可知,孩子们在爬山的过程中,不时停下来观察未知的植物,看废弃的鹿床,这些活动让她们充满热情,让她们很开心;固定搭配make one’s day意为“使某人非常高兴”符合语境。故选C。
25.考查动词词义辨析。句意:随着影子开始变长,我们继续往上走。A. lengthen(使)变长;B. swing摇摆;C. emerge出现;D. fade褪色。根据上文“One dull cold February afternoon, I had a sudden ________ to hike the hill with my two daughters”以及“As the shadows started to”可知,作者和女儿们是下午开始爬山,随着时间推移,太阳西斜、落山,人的影子开始变长。故选A。
26.考查动词词义辨析。句意:很快,疲惫开始超过热情。A. fuel给……提供燃料;B. witness目击;C. overlook忽视;D. outpace超过。根据上文“Soon, weariness began to”以及下文“We decided to return.”可知,登山的疲惫开始超过热情,作者一行人决定返回。故选D。
27.考查形容词词义辨析。句意:我们没有沿着原来的路线返回,而是选择走下山陡峭的一面,相信我们前面有一条小溪会指引我们走到路上。A. original原来的,原创的;B. rough粗糙的;C. offbeat不寻常的,标新立异的;D. roundabout迂回的,拐弯抹角的。根据上文“Instead of backtracking over our”可知,作者一行人没有沿着原来的路线返回。故选A。
28.考查动词词义辨析。句意:我们没有沿着原来的路线返回,而是选择从山陡峭的那面下山,相信我们前面有一条小溪会指引我们走到路上。A. appreciating欣赏;B. trusting相信;C. envisioning想象;D. assessing评估。根据下文“my general sense that ahead of us lay the stream that would guide us to the road”可知,作者相信自己的直觉,认为前面有一条小溪会指引他们走到回去的路上。故选B。
29.考查名词词义辨析。句意:但是当地形变得平坦时,我第一次产生了怀疑:小溪在哪里?我们偏离路线了吗?A. curiosity好奇心;B. comparison比较;C. doubt怀疑;D. anticipation期待。根据下文“Where was the stream? Were we off course?”可知,没看到小溪让作者开始怀疑,是否偏离了路线。故选C。
30.考查动词词义辨析。句意:我本能地掏出手机想确定我的位置,但它却在寒冷的空气中在我手中失灵了。A. died停止运转;B. slipped滑落;C. flashed闪烁;D. rang响起铃声。根据下文“I started feeling a bit panicky.”以及“If my phone had ______ then, I might have directly followed the BDS, ignoring the old ______ of depending on surroundings and life skills.”可知,作者想用手机确认自己的位置,但是手机由于低温停止运行,所以作者感觉有点恐慌。故选A。
31.考查副词词义辨析。句意:诚然,我开始感到有点恐慌。A. Reportedly据说,据报道;B. Admittedly诚然,无可否认;C. Seemingly似乎;D. Surprisingly惊人地。根据下文“I started feeling a bit panicky. However, I quickly ______ myself, reassuring my daughters to continue walking.”可知,作者承认由于手机由于低温停止运行无法确认位置,自己开始感到恐慌。故选B。
32.考查动词词义辨析。句意:然而,我很快让自己镇定下来,安慰女儿们继续走。A. exposed暴露;B. composed使镇静,使镇定;C. defended防御;D. behaved表现。根据上文“I started feeling a bit panicky.”以及下文“reassuring my daughters to continue walking”可知,作者很快让自己镇定下来,安慰女儿们继续走。故选B。
33.考查动词短语辨析。句意:我专注于地标,发现了一棵熟悉的树,最终辨认出了大路。A. got off下车;B. laid down放下;C. came across(偶然)遇见,碰见;D. made out辨认出。根据上文“Were we off course?”以及“I spotted a familiar tree”可知,作者发现了熟悉的树,辨认出了路。故选D。
34.考查动词词义辨析。句意:如果我的手机当时还能用,我可能会直接跟着北斗卫星导航系统走,而忽略了依靠周围环境和生存技能的旧习惯。A. worked工作,运转;B. remained保持;C. changed改变;D. overheated过热。根据上文“I instinctively (本能地) pulled out my phone to get my location, but it ______ in my hand in the cold air.”以及下文“I might have directly followed the BDS”可知,此处是虚拟语气,对过去情况的假设,如果手机还能正常工作、还能用,作者可能会直接跟着北斗卫星导航系统走。故选A。
35.考查名词词义辨析。句意:如果我的手机当时还能用,我可能会直接跟着北斗卫星导航系统走,而忽略了依靠周围环境和生存技能的旧习惯。A. theory理论;B. standard标准;C. practice惯常做的事,习惯;D. routine常规。根据下文“of depending on surroundings and life skills”可知,此处指依靠周围环境和生存技能是惯常做法、旧习惯。故选C。
学科网(北京)股份有限公司
学科网(北京)股份有限公司
$限时训练2025.9.27
Masterpieces of American Art
Celebrate the genius of American art at two excellent museums as you travel to Arkansas and
Missouri with an art historian
Schedule
Day 1-Arrive in Kansas City,Missouri
After individual arrivals at your hotel,join fellow travelers and your Smithsonian Journeys
Expert for a welcome reception,opening remarks,and dinner.
Day 2-Thomas Hart Benton Studio,Nelson-Atkins Museum of Art
Spend the morning at the home of the famed Missouri artist Thomas Hart Benton.Visit his
studio,including coffee cans and a stretched canvas ().Then tour the Nelson-Atkins
Museum of Art,including the extensive collection of American artworks.Highlights include
viewing a superb group of sculptures by Isamu Noguchi,as well as Claes Oldenburg.This evening
gather for a reception and a lecture by your Smithsonian Journey s Expert followed
by the remainder of the evening at leisure.
Day 3-Eureka Springs,Arkansas
Upon arrival explore the galleries and shops on your own.Then enjoy a guided tour of the
attractive Ozark town,known for its fine Victorian architecture.Weather permitting,make a brief
stop at Thorncrown Chapel.This evening gather for a casual group dinner followed by the
remainder of the evening at leisure.
Day4-Crystal Bridges Museum of American Art
This morning enjoy a leisurely breakfast before meeting your guide.Then depart for Crystal
Bridges.Upon arrival,explore the permanent collection on your own,which showcases major
works by StieglitzCircle artists and a Skyspace by James Turrell.Then enjoy your free time to
explore the museum around the museum.Enjoy a festive parting dinner at one of Bentonville's
fine restaurants.
1.Where can tourists visit a fine collection of statues?
A.Nelson-Atkins Museum.
B.Ozark town.
C.Thorncrown Chapel.
D.Crystal Bridges Museum.
2.What can tourists do on Day 4?
A.Enjoy a welcome reception.
B.Attend a guide's lecture.
C.Watch Victorian buildings.
D.Explore Crystal Bridges.
3.In which section of a travel website can we read this text?
A.Arrange your journey
B.Seek your destination
C.Book your transportation.
D.Choose your travel agency.
B
When I arrived in Hefei,I was greeted by a familiar curiosity that comes with my mixed
background:Brazilian bom with a mother who carries the rich traditions of Luxembourg and
Germany,and a father with values rooted in the cultures of Italy and Portugal,making me a
natural global citizen who respects and explores diverse cultures.This city,where ancient
traditions meet modern inventions,absorbs me,mimoring my inner thirst for balance.
Since my childhood,China has stimulated my imagination.My father told bedtime stories of
Marco Polo's Asian adventures,especially in China,and these stories excited my curiosity,
making me eager to explore this ancient and mysterious land with a history of over 5,000 years.I
chose Hefei for its rich history and welcoming nature,which remind me of my parents'stories.It
feels like home,a piece in the global cultural puzzle.
In China,I was struck by the warmth of the people.Everywhere I go,I'm met with smiles
and offers of help,children approaching me,greeting me with excitement and eager to chat in
English.This simple,sincere friendliness has made me feel incredibly connected to this place.
Now,as a teacher in Hefei,I share my passion for learning with students from 33 different
countries.It's magical to be both a teacher and a lifelong student in China.Every day,I learn from
the wisdom of ancient traditions or the fresh outlooks of my students.The Chinese's eagerness to
learn and respect for knowledge inspire me.
Most importantly,living here has allowed me to accept my identity as a global citizen fully.I
feel connected to the world through shared human experiences beyond borders,and each
interaction is an opportunity to enrich my life's story.Settling into Hefei,I'm filled with
admiration and respect for Chinese culture and traditions,feeling it's a privilege to live in a place
that offers new insights and experiences every day!
4.Why does the author mention his background?
A.To show its impact on his cultural view.B.To justify his non-traditional life choice.
C.To prove its role in promoting curiosity.D.To express his love for diverse cultures.
5.What fueled the author's initial interest in China?
A.The colourful history of Hefei
B.The adventure of his father
C.The mystery of ancient China.
D.The journey of Marco Polo.
6.What is the author's impression of Chinese people?
A.Generous and mindful.
B.Supportive and inquiring.
C.Learned and hardworking.
D.Cooperative and courageous.
7.What does the author value most in Hefei?
A.The opportunity to teach and leam.
B.The honor of being a global citizen.
C.The chance to explore Chinese culture.D.The sense of belonging and connection.
C
With their stiff leaves and large flowers,bromeliads can add drama to a plant stand or
window sill.Though they are not the flashiest of houseplants,some pollution scientists are ready
to give them credit.Their new data show these plants are experts at cleaning the air.
Paints,furniture,photocopiers and printers,cleaning supplies and dry-cleaned clothes can all
release volatile organic chemicals,or VOCs.Chronic VOC exposure poses serious health risks,
from dizziness and asthma to potential organ damage and cancer.But certain types of greenery can
suck the pollutants up,which keeps them safely away from us.Chemist Vadoud Niri's found that a
single bromeliad can remove at least 80 percent of six different VOCs from the air inside a 76-liter
container.His team tested five houseplants against eight VOCs,finding bromeliads outperformed
others.Only two VOCs,dichloromethane and trichloromethane were ignored by all plants.
Plants absorb VOCs from the air,explains medicinal chemist Webe Kadima.Those gases
enter through tiny openings in plant leaves and stems.Once inside,the plant's enzymes (break
down the VOCs into smaller,harmless chemicals.
Of course,a house,or even a bedroom,is much bigger than the container Niri and his team
used.But their work suggests people might breathe easier if they can figure out what type and how
many plants it takes to clean the air in a room.This is important because indoor air usually has
three to five times greater concentrations of VOCs than outdoor air.
Niri says he plans to test how many houseplants it takes to clean the air in an average-size
room.After that,he will repeat the experiment in a nail salon.With bottles of nail polish and
remover,the air in those salons tends to have high levels of VOCs,he notes.
While special air filtering machines might do the same job as green plants,they cost a lot
more,Niri says.And they are nowhere near as pretty as a bromeliad,especially one in bloom.
8.What is one of Niri's findings about bromeliads?
A.They beat machines in air cleaning.B.They lead in VOCs removal during tests.
C.They absorb most pollutants in a room.D.They break down VOCs through enzymes.
9.What does Webe Kadima try to explain in paragraph 3?
A.The necessity to solve air pollution.B.The pollutant removal process of plants.
C.The medical value of plants'enzymes.D.The absorption capability of different plants.
10.What will be the focus of Niri's research?
A.Designing cheap air-filtering device.B.Researching blooming bromeliads.
C.Repeating the tests in various salons.D.Testing plant performance in larger space.
11.What can be a suitable title for the text?
A.Plants:Efficient VOCs Remover
B.Enzyme:Air Pollution Solution
C.Bromeliads:Nature's Air Purifier
D.Nail Salons:Indoor VOCs Producer
0
On a recent afternoon,I held a cake in front of me and said:"Look and tell me if this is
healthy."A voice responded that the cake was unhealthy because it could contribute to weight gain.
This was the Ai Pin,a $700 tiny computer featuring a virtual assistant to answer questions and
perform tasks
The novel design of the Ai Pin,made by the start-up Humane,enjoyed popularity when it
was launched last year.Its goal was to offer technology that would help people avoid screens and
maintain eye contact.
Shaped like a pin ()it attaches to your clothing and is supposed to perform tasks you
would normally do with a smartphone.An important feature is the ability to translate a
conversation into another language in real time.With one finger held down on the pin,you could
set a language to translate to,such as Mandarin.Another feature is called Vision on the Ai Pin,
which is unfinished.The device uses its camera and AI to analyze your surroundings and give
information about what you are looking at.
The Ai Pin has its own phone number and data connection.However,photos and videos
taken with the camera look poorly lit and misty.To place a phone call,you can ask the assistant to
call someone in your address book,but you have to say the numbers to dial a new number.
Gary Marcus,an Al enterpriser,said the mistakes the Ai Pin made were the result of so-
called hallucinations ()the tendency for AI to guess and make things up when it can't find
the right answer."It's almost like a broken watch being right twice a day,"he said.Ms.
Bongiorno acknowledged that hallucinations were happening with Ai Pin and that the technology
would improve rapidly with user feedback.
The Ai Pin was useful and impressive while it was occasionally wrong,unhelpful or
inefficient to drive me back to my phone.Yet there is a core of an idea worth preserving.I'll pin
my hopes on future editions of the product-perhaps a cheaper one that lacks a camera and a laser.
12.Why does Humane develop the Ai Pin?
A.To maintain screen time.
B.To enhance eye contact.
C.To improve task efficiency.
D.To replace smartphones
13.Which task is the Ai Pin incapable of performing at present?
A.Interpreting a language.
B.Identifying an object.
C.Shooting a picture.
D.Making a phone call
14.What can be inferred about current Ai Pin according to Gary Marcus?
A.Things can always be messed up by Ai Pin.B.User feedback can't improve Ai Pin.
C.All questions can't be answered by Ai Pin.
D.Hallucinations can barely affect AiPin
15.What is the author's overall view toward Ai Pin?
A.Dismissive
B.Disapproving.
C.Respectful.
D.Objective.
七选五
Heavy and Even Moderate Drinking Can Harm the Brain
A study in Neurology suggests that alcohol consumption,even at moderate levels,may
damage brain health.Researchers analyzed brain tissue from 1,700 late individuals and found that
those who drank eight or more alcoholic beverages weekly doubled their risk of dementia-related
brain lesions.16.
The study categorized participants into four groups:nondrinkers,moderate drinkers(<7
drinks/week),heavy drinkers(8drinks/week),and former heavy drinkers.Heavy drinkers showed
a 133%higher risk of brain lesions compared to nondrinkers.17 "These results challenge
the assumption that only heavy drinking harms the brain,"says lead researcher Dr.Alberto Justo.
18 For example,heavy drinkers had lower rates of hypertension and stroke.However,
researchers noted that this group died 13 years earlier on average,potentially avoiding age-related
conditions
To assess alcohol's impact,scientists examined markers like tau tangles (linked to
Alzheimer's)and blood vessel damage.19 "Neuropathological changes can occur even
with moderate consumption,"explains Dr.Justo.
The study defined "heavy drinking"as >8drinks/week,differing from U.S.standards(>
15drinks/week for men).Top American drinkers average 74 drinks weekly,far exceeding the level
set by the study.This difference highlights regional variations in defining alcohol abuse.
Despite its insights,the research has limitations.Cognitive data relied on family reports,
which may lack accuracy.20 Dr.Mollie Monnig,not involved in the study,cautions,
"Associations don't prove causation."
Experts recommend practical steps to reduce alcohol intake,such as tracking consumption,
taking breaks (e.g."Sober October"),and alternating with nonalcoholic drinks."Small changes can
significantly lower risks,"advises addiction specialist Dr.Christopher Kahler.
A.Meanwhile,moderate drinkers still faced a 60%increased risk.
B.However,self-reported data may weaken the study's reliability.
C.Genetic factors were not considered,possibly affecting the results.
D Such damage disrupts blood flow and contributes to cognitive decline.
E.Not drinking remains the safest choice for long-term brain health.
F.The finding emphasizes the need for stricter alcohol guidelines globally
G.Surprisingly,some outcomes contradicted common health assumptions
完形
I'd been exploring the 40-hectare woods around our cottage my whole life and I knew the
way well.So it was a 21 when I found myself lost there.
One dull cold February afternoon,I had a sudden 22 to hike the hill with my two
daughters.Putting on our snowshoes,we immediately
23
northwestward.While
making our way up the hill,my daughters stopped occasionally to investigate unknown plants and
to look at the abandoned deer beds...These really made their 24
As the shadows started to 25,we moved further up.Soon,weariness began to
26 enthusiasm.We decided to return.Instead of backtracking over our 27 route,I
chose to walk down the steep side of the hill,28 my general sense that ahead of us
lay the stream that would guide us to the road.But as the terrain (leveled out,I had my first
major moment of 29:Where was the stream?Were we off course?
I instinctively pulled out my phone to get my location,but it 30 in my hand in
the cold air.31,I started feeling a bit panicky.However,I quickly 32 myself,
reassuring my daughters to continue walking.Focusing on the landmarks,I spotted a familiar tree
and eventually
33
the road.
That winter's day taught me a valuable lesson about habitual reliance on technology.If my
phone had 34 then,I might have directly followed the BDS,ignoring the old 35
of depending on surroundings and life skills.
21.A.challenge
B.shock
C.reward
D.reminder
22.A.discovery
B.response
C.worry
D.urge
23.A.escaped
B.drove
C.headed
D.looked
24.A.reputation
B.dream
C.day
D.way
25.A.lengthen
B.swing
C.emerge
D.fade
26.A.fuel
B.witness
C.overlook
D
outpace
27.A.original
B.rough
C.offbeat
D.roundabout
28.A.appreciating
B.trusting
C.envisioning
D
assessing
29.A.curiosity
B.comparison
C.doubt
D.anticipation
30.A.died
B.slipped
C.flashed
D.rang
31.A.Reportedly
B.Admittedly
C.Seemingly
D.
Surprisingly
32.A.exposed
B.composed
C.defended
D.behaved
33.A.got off
B.laid down
C.came across
D.made out
34.A.worked
B.remained
C.changed
D.
overheated
35.A.theory
B.standard
C.practice
D.routine