As the COVID-19 pandemic （新冠肺炎）rages, with ongoing lockdown （封城）measures affecting millions of people around the globe, levels of air pollution are falling dramatically in many parts of the world. This trend has been highlighted by a new report published by Swiss company IQAir looking at ten key global cities that normally suffer from high levels of pollution.
The report compared measurements from ground-based monitoring stations regarding a type of pollutant known as PM2.5— tiny inhalable particles measuring 2.5 micrometers or smaller that are emitted （排放）by various sources such as vehicles and power plants. It found significant falls in nearly all the locations listed.
This is, perhaps, not surprising considering the large decreases in vehicle traffic and industrial activity that have occurred with lockdown measures imposed （实施）on these cities.
The report examined data collected over a three-week period for each city while they were under lockdown conditions. IQAir then compared these measurements to the same time period for the years between 2016 and 2019.
IQAir found that nine out of the ten cities in the report experienced significant reductions in PM2.5 compared to the same period for 2019. Those with historically higher levels of PM2.5 pollution saw the greatest drops including New Delhi （-60 percent） Seoul （-54 percent） and Wuhan （-44 percent）. Besides, seven of the cities saw reductions in PM2.5 of 25 to 60 percent compared to the same period last year.
Wuhan—where the COVID-19 pandemic was first identified—experienced the cleanest air on record for February and March. The city was placed under one of the strictest lockdowns in the world on January 24, which was only lifted after 10 weeks.
Unfortunately, these sharp improvements in air quality have coincided （同时发生）with significant economic disruption, suffering and loss of life across the globe. Furthermore, experts warn that without sustained action to control pollution once the crisis ends, levels will likely rebound, as has been witnessed following previous economic downturns.
1.The levels of air pollution in the nine cities drop dramatically probably because .
A.the global economy suffers downturns
B.vehicle traffic and industrial activity decrease sharply during the pandemic
C.the governments of these cities take effective measures to reduce air pollution
D.people around the world have raised their awareness of environmental protection
2.Why does the author list the numbers in paragraph 5?
A.To show the data from IQAir are true.
B.To make a comparison between the cities.
C.To show the significant reductions in levels of air pollution.
D.To prove the measures carried out in these cities are effective.
3.What does the underlined word "disruption” in the last paragraph mean?
A.destruction B.eruption
C.break D.construction
4.What is the main idea of the passage?
A.The introduction of PM2.5.
B.The COVID-19 pandemic has caused great loss across the globe.
C.IQAir measured the air pollution levels in major global cities during the pandemic.
D.Air pollution has fallen significantly in nine major global cities during the pandemic.
高三英语阅读理解中等难度题
As the COVID-19 pandemic （新冠肺炎）rages, with ongoing lockdown （封城）measures affecting millions of people around the globe, levels of air pollution are falling dramatically in many parts of the world. This trend has been highlighted by a new report published by Swiss company IQAir looking at ten key global cities that normally suffer from high levels of pollution.
The report compared measurements from ground-based monitoring stations regarding a type of pollutant known as PM2.5— tiny inhalable particles measuring 2.5 micrometers or smaller that are emitted （排放）by various sources such as vehicles and power plants. It found significant falls in nearly all the locations listed.
This is, perhaps, not surprising considering the large decreases in vehicle traffic and industrial activity that have occurred with lockdown measures imposed （实施）on these cities.
The report examined data collected over a three-week period for each city while they were under lockdown conditions. IQAir then compared these measurements to the same time period for the years between 2016 and 2019.
IQAir found that nine out of the ten cities in the report experienced significant reductions in PM2.5 compared to the same period for 2019. Those with historically higher levels of PM2.5 pollution saw the greatest drops including New Delhi （-60 percent） Seoul （-54 percent） and Wuhan （-44 percent）. Besides, seven of the cities saw reductions in PM2.5 of 25 to 60 percent compared to the same period last year.
Wuhan—where the COVID-19 pandemic was first identified—experienced the cleanest air on record for February and March. The city was placed under one of the strictest lockdowns in the world on January 24, which was only lifted after 10 weeks.
Unfortunately, these sharp improvements in air quality have coincided （同时发生）with significant economic disruption, suffering and loss of life across the globe. Furthermore, experts warn that without sustained action to control pollution once the crisis ends, levels will likely rebound, as has been witnessed following previous economic downturns.
1.The levels of air pollution in the nine cities drop dramatically probably because .
A.the global economy suffers downturns
B.vehicle traffic and industrial activity decrease sharply during the pandemic
C.the governments of these cities take effective measures to reduce air pollution
D.people around the world have raised their awareness of environmental protection
2.Why does the author list the numbers in paragraph 5?
A.To show the data from IQAir are true.
B.To make a comparison between the cities.
C.To show the significant reductions in levels of air pollution.
D.To prove the measures carried out in these cities are effective.
3.What does the underlined word "disruption” in the last paragraph mean?
A.destruction B.eruption
C.break D.construction
4.What is the main idea of the passage?
A.The introduction of PM2.5.
B.The COVID-19 pandemic has caused great loss across the globe.
C.IQAir measured the air pollution levels in major global cities during the pandemic.
D.Air pollution has fallen significantly in nine major global cities during the pandemic.
高三英语阅读理解中等难度题查看答案及解析
The COVID-19 pandemic has spread far and wide. Because of this, countries around the world have carried out containment measures to help stop the virus in its tracks. As more and more people stay inside to stay safe, the outside world seems to have become much quieter. In fact, scientists have seen this change in their research, too.
Seismologists—scientists who study earthquakes—have heard a lot less seismic (地震的) noise recently. Seismic noise is made from vibrations (震动) in the ground that are caused by things like ocean waves and human activity, such as construction work and traffic.
Thomas Lecocq, a scientist at the Royal Observatory of Belgium, located in Brussels, was the first to notice this phenomenon. According to Lecocq, the amount of seismic noise in Brussels has been reduced by about 30 to 50 percent since mid-March. Interestingly enough, this is around the same time Belgium started its containment measures.
Because of this reduction in background noise, scientists like Lecocq have been able to pick up on smaller earthquakes that some seismic stations—like the one in Brussels—wouldn’t have been able to before.
This phenomenon isn’t unique to Brussels, though. Once Lecocq shared his findings online, seismologists from all over the world echoed similar findings. Celeste Labedz, a graduate student at the California Institute of Technology, mentioned in a tweet that Los Angeles also experienced less background noise. “The drop is seriously wild,” she wrote. Researchers from the UK, France and New Zealand also noted a decrease in background noise since containment measures were put in place.
These global efforts to contain the COVID-19 virus have helped to shed light on seismic activity that may have gone unnoticed. It also shows that people are listening to health officials and following lockdown guidelines.
1.What did seismologists find out recently?
A.More smaller earthquakes are likely to happen.
B.Less seismic activity has been detected recently.
C.Reduced seismic vibration makes Earth quieter.
D.Seismic noise is caused by vibrations underground.
2.What can we learn from the text?
A.More seismic noise is being picked up.
B.More data on smaller earthquakes is being collected.
C.Scientists will shift their focus to smaller earthquakes.
D.Future big earthquakes can be more accurately predicted.
3.What does the underlined word “echoed” in paragraph 5 mean?
A.Questioned. B.Demanded.
C.Explored. D.Repeated.
4.What can we conclude from the last two paragraphs?
A.The drop in seismic noise is unique to Europe.
B.Seismic noise is mainly caused by human activity.
C.Many seismologists wanted tighter restrictions for their research.
D.The phenomenon proved that people are practicing social distancing.
高三英语阅读理解中等难度题查看答案及解析
The COVID-19 pandemic (疫情)has left many worrying about the future. However, I’ve found _______ in my mother’s one simple self-care ritual (仪式)and I have decided not to keep _______ in a sort of uncertainty.
I was _______--by a single mom who had two kids, two jobs and a mile - long _______of cleaning, cooking and bill-paying. _______ ,she was never seen with a hair out of _______. Every morning, she’d head to a _______，lift her chin (下巴)up slightly, a gesture of confidence, and put on lipstick (口红) _______delivering a forced yet toothy smile. I was too young to _______ why.
My mother ________ her red lips until the very end. In hospital, she asked me to help walk her to the basin to brush her teeth. I stared at her from behind ________ she might fall. I was deep in sorrow and uncertainty, tears ________ down my face. Then suddenly, from behind, I sensed that ________ gesture. Chin up. Confidence. A second later I heard the click of the ________ .
We don’t know what’s going to happen next. Yet one thing is ________ : When the world falls apart, we’ve ________ got unbelievable power to choose. I’m not suggesting we ________ what’s around us but focus on what we can control to ________ getting knocked around by uncertainty. Get up and shut the door on anything ________. Just be sure to keep putting that ________ on.
1.A.beauty B.knowledge C.strength D.evidence
2.A.drowning B.dreaming C.praying D.working
3.A.praised B.abused C.abandoned D.raised
4.A.roll B.pile C.list D.chain
5.A.Otherwise B.Therefore C.Besides D.However
6.A.sight B.place C.reach D.balance
7.A.mirror B.table C.comer D.wall
8.A.when B.after C.before D.till
9.A.ask B.realize C.doubt D.advise
10.A.wore B.bit C.read D.rounded
11.A.convinced B.relaxed C.surprised D.worried
12.A.streaming B.getting C.pulling D.pointing
13.A.different B.familiar C.proper D.strange
14.A.camera B.door C.lock D.cap
15.A.easy B.delicate C.sure D.necessary
16.A.even B.still C.already D.also
17.A.ignore B.examine C.favor D.hate
18.A.practice B.accept C.avoid D.finish
19.A.challenging B.discouraging C.amusing D.thrilling
20.A.power B.coat C.mask D.lipstick
高三英语完形填空中等难度题查看答案及解析
阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
In the ongoing fight against COVID-19, gritting one’s teeth and carrying on has characterized much about life in Wuhan these past months. “Wuhan people experienced it first-hand.” said Hui Yan, a Wuhan native 1. recovered from the coronavirus. “Our friends got sick. Our friends and relatives died. Right before our eyes, one 2. one, they left us. They have a deeper understanding of this disaster in 3. (compare) with people in other cities.” In February, Ms. Yan 4. (spend) 15 days fighting the virus in Huoshenshan, one of the city's newly built coronavirus hospitals.
During the past two months, with the lockdown lifted, growing numbers of families 5. (be) out to take in the sunshine and fresh air in parks along the Yangtze River. Older residents have started gathering again in small groups 6. (chat) or play chess. Children are a rare sight and always appear to be under the careful watch of parents. More shops have reopened, often 7. (set) up street-front counters so that customers can buy vegetables, alcohol, and other goods without entering. Companies in Wuhan have been 8. (caution) about calling their 9. (employ) back to work, contributing to the revival of the city life. Yet there still remains 10. tough test for the city to balance pandemic (疫情) control and economic growth.
高三英语语法填空中等难度题查看答案及解析
The coronavirus pandemic and the threat of a national lockdown have caused some people to buy essential supplies ________ until there’s ________ on grocery store shelves for anyone else. Not only is it ________ and inconsiderate, it also affects the age group that is most sensitive to the virus: the elderly. But there are plenty of people who’ve been helping the elderly with their ________, and also by offering them ________.
Helena Ellis ________ a Facebook post, saying that she saw an old man standing with an empty trolley (手推车) staring at empty shelves of bread. ________, she gave him one of the last two ________ that she had taken. She ________ other people to help out the elderly and spare them something that people could do ________. “In a time of madness and ________, please don’t forget those aged people,” Ellis wrote.
Liam Elkind, junior at Yale University enlisted (征募) over 1,300 volunteers to help deliver food and medicine to seniors. ________ themselves Invisible Hands, the group offers the elderly the ________ of filling out a delivery request form and having their shopping done.
Jayde Powell, another college student, ________ started a network of Shopping Angels to deliver groceries to the elderly in her area. “We’re doing this to try and ________ to people who are completely alone in this situation,” Powell told CNN.
Tonka, a ________ dog, is used to visiting his senior friends to give some “feel-good” at the nursing home in Texas. But when the nursing home ________ all visitors in an effort to protect its ________ from the spread of coronavirus, Tonka’s owner, Courtney Leigh, decided to ________ Tonka’s visits, just from outside the nursing home’s windows, holding a sign that ________ “We Miss You.”
1.A.in vain B.in panic C.in demand D.in surprise
2.A.nothing B.a little C.something D.a few
3.A.necessary B.careless C.critical D.selfish
4.A.family B.shopping C.company D.health
5.A.comfort B.respect C.mercy D.passion
6.A.put on B.put in C.put off D.put up
7.A.Desperate B.Undoubted C.Heartbroken D.Hopeless
8.A.trolleys B.shelves C.hotdog packs D.shopping lists
9.A.urged B.ordered C.inquired D.appealed
10.A.within B.without C.with D.out
11.A.wars B.Conflicts C.ruins D.chaos
12.A.Calling B.Called C.To Call D.Being Called
13.A.privilege B.option C.promise D.challenge
14.A.uniquely B.ultimately C.similarly D.surprisingly
15.A.find out B.look out C.reach out D.call out
16.A.therapy B.guide C.detection D.rescue
17.A.turned off B.turned out C.turned in D.turned down
18.A.residents B.guests C.immigrants D.families
19.A.postpone B.pause C.transmit D.continue
20.A.writes B.prints C.says D.speaks
高三英语完形填空中等难度题查看答案及解析
Across the United Kingdom, as the COVID-19 crisis has bitten deeper, its citizens have started a new practice: Emerging from self-isolation every Thursday night at 8 p.m. to clap, cheer, and bang pots and pans to show support for the country’s front-line doctors and nurses.
But as the death toll today hit a single-day U.K. record of 980-and with the peak death rate still estimated to be two weeks away-the crisis caused by the scale of the pandemic has been worsened here by a new degree of political uncertainty. Prime Minister Boris Johnson was admitted to the hospital on Sunday and has spent his days and nights in intensive care fighting the virus, surrounded by the doctors and nurses of the National Health Service.
The U.K. is not alone in showing new found public affection for key workers, nor in facing an unprecedented public health emergency that has, in Europe, especially affected Italy, Spain, and France. A recent U.K. government appeal for 250,000 volunteers to help the NHS (National Health Service) yielded an army of 750,000 would-be helpers.
But the pandemic finds the U.K. at a politically uncertain moment, as a nation finally emerging from three and a half years of political issue over its chaotic departure from the European Union. A December election that gave a decisive victory to Mr. Johnson and the ruling Conservative Party added clarity to a Brexit mandate and was seen by many as a potential first step in healing deep divisions in Britain’s political and social structure.
Acknowledging the impact of the coronavirus on daily lives, Queen Elizabeth II, in a rare address on Sunday, praised the “national spirit” and thanked NHS and care workers, whose “every hour” of hard work “brings us closer to a return to a more normal time.” Calling on citizens to “remain united and resolute” to overcome the pandemic, she sought to provide comfort. “While we may have still more to endure, better days will return We will meet again,” she said.
1.What contributed to worsening the current crisis in the U.K?
A.The pandemic of COVID-19. B.Political instability.
C.The vote for Brexit. D.The December election.
2.The British showed widespread support to the fight against coronavirus EXCEPT by .
A.clapping, cheering, and banging pots and pans every Thursday night
B.advocating volunteers to help the NHS
C.organizing 750,000 helpers to join the army
D.praising the “national spirit” in Queen’s speech
3.It can be inferred from the passage that .
A.The death toll set a new single-day record and the peak death had arrived
B.Prime Minister Boris Johnson was receiving good medical treatment
C.the COVID-19 has been found in European history
D.Conservative Party has healed the deep political and social divisions
4.Where might the passage come from?
A.A noticeboard. B.A private e-mail.
C.A research paper. D.A newspaper.
高三英语阅读理解中等难度题查看答案及解析
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
As the COVID-19 crisis spreads around the world, families worldwide are having a hard time 1. (adapt) to unexpected changes in their daily routines. Health officials point out that the psychological state of children needs special attention. The stress and uncertainty 2.(associate)with the pandemic (流行病) and social distancing policies potentially have significant 3.(affect) on their mental well-being.
4.kids respond to stressful events is influenced by their temperament (性格) . Anxious and fearful kids might be especially worried about getting sick or about family members getting sick. Very sociable kids may suffer more 5.social isolation than others do.
6.(help) their kids deal with stress, parents should respond to their kids' 7.(react) in a supportive way, listen to their concerns, and give them extra time and attention. Parents should also try to engage their kids in 8.(create) activities, like playing and drawing. Social contact is vital to our mental health, 9.parents are supposed to help kids stay in contact with friends and family members through telephone or online channels.
While nobody knows for sure when all of these will be over, we have to find more tools and skills for keeping up our 10.(spirit) and our resilience.
高三英语语法填空中等难度题查看答案及解析
As the COVID-19 forces students to stay home, online learning has seen a sharp rise among students. Since late January, China has delayed starting the new school semester and encouraged students to study at home over safety concerns.
Besides what has been arranged by your schools as your study routine, what can you gain from online learning?1.
To successfully learn online, you need to dedicate a significant amount of your time, consistently attend the program, concentrate while studying and fully stick to your learning process, just as you would do for a regular course.
To stay on track with your online course, always keep in mind what you hope to complete by the end of it.2. Estimate how much time each task will take to complete. Keep detailed notes and review them often.
A study plan is important to online learning.3.Online learning needs to be well organized. Create a study calendar that will help you remember all the important dates like online exams or deadlines for your assignments.
When you feel yourself losing concentration, consider taking a short break or sopping for the night.4.
Taking online courses can be very convenient for many people.5.It requires time management skills, self-discipline, willpower and motivation.
A.Make a goal.
B.It can also offer you a good experience for self-learning.
C.Most importantly, you need to plan ahead with a good calendar system.
D.Online course companies also adopted special measures to meet students’ demands.
E.However, it may be challenging for some to successfully complete their online courses.
F.A to-do list is useful to carry out your study plan and to stay on track with your studying.
G.It is better to wait until you are able to start afresh rather than waste your time trying to focus.
高三英语七选五困难题查看答案及解析
With the Covid-19 virus sweeping the globe, the science on quitting smoking offers welcome news for smokers who want to build up their defenses in case they contract the virus. Though it may still take many months for a smoker's lungs to heal from damage caused by long-term smoking, your health can noticeably improve in the days and weeks after quitting in ways that could make a difference against the virus. Covid-19 creates an added sense of urgency, and there's enough reason to believe that quitting smoking during the pandemic（流行病）could increases your opportunities of fighting off the virus.
If you make the decision to quit, the cilia（纤毛）in your lungs are one of the first parts of your body to heal. These hair-like projections wave back and forth like a brush as air moves in and out of your lungs. They help your body fight off colds and infection. They also help clear mucus（黏液）, so if they're not functioning as well as they should, mucus can build up in the lungs. Your body's tendency to cough during an infection helps inspire the bodily process of clearing out mucus. That's vital in fighting the Covid-19 condition. The elderly are at a greater risk for too much lung fluid that often limits breathing following coronavirus infection because they don't have a strong enough cough to clear it up.
A second short-term gain from quitting smoking comes from reducing ongoing inflammation（炎症）in your body, which can make you infect Covid-19 more easily. Having your lungs in as good of shape as you can in case of a corona virus infection is key.
Besides lung-related issues, quitting smoking can also deliver healthy benefits to the heart that could help prevent possible heart attacks, which are another cause of death in Covid-19 cases. After you quit smoking, your blood becomes thinner and less possible to setting. Heart attacks are less likely. One reason this happens is because smoking makes it harder for the heart to distribute blood throughout the body.
1.What is the use of the lung cilia?
A.Cleaning up the lungs. B.Killing the Covid-19 virus.
C.Predicting lung infections. D.Reducing breathing difficulty.
2.Why are the old at higher risk to the corona virus?
A.They cannot go out during the pandemic. B.There is too much mucus in their lungs.
C.Most of them are heavy smokers for years. D.They are lacking in the care of their children.
3.What good does quitting smoking do to heart？
A.Strengthen the heart muscle. B.Turn blood to be much thicker.
C.Make the blood flow smoother. D.Speed the heartbeat up apparently.
4.What is the text mainly about？
A.Quitting smoking can help defend the Covid-19.
B.Ways to make a difference against corona viruses.
C.The Covid-19 virus is threatening humans worldwide.
D.Protecting the smokers' lungs to heal from damage.
高三英语阅读理解中等难度题查看答案及解析
With the news filled with frightening reports about a new coronavirus (冠状病毒），COVID-19, it's easy to feel anxious. However, you don't need to worry, especially when you're following professional guidelines for protecting yourself1.
Get your information from trustworthy sources (来源）.2., and some of them may contain inaccurate or outdated information. To make sure that you're getting accurate and reasonable information, stick to sources like the Centers for Disease Control and Prevention and the World Health Organization.
3.. While it's good to stay informed, constantly reading or watching news updates can quickly make you bothered. Instead, set a specific time to check for updates so you're not thinking about the virus all day. Don't visit news sites or turn on the news outside of the time, and avoid social media if you're reading too many updates there.
Focus on the fact that most people recover. Reports about the new coronavirus likely sound very scary, so it's understandable that you'd be afraid. 4.Besides, most people who get very sick will get better after receiving treatment and recover at last.
Share helpful information with friends and family. You can help yourself and others feel calmer about the coronavirus outbreak by sharing any helpful information you find. 5., post a link on social media or email it to any friends or family members who are worried about the virus.
A.Limit how often you check for news updates.
B.Meanwhile, your anxiety about the outbreak disappears.
C.And there are things you can do to put your fears at ease.
D.Stop keeping yourself informed of the online news updates.
E.You're probably reading lots of reports about the coronavirus.
F.If you see a useful update on the new coronavirus from a reputable news source.
G.However, most cases are mild and most of the people can recover after some time.
高三英语七选五中等难度题查看答案及解析