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1、It is only when an NBA player has aged and been through many battles _____he learns an important lesson;
there is no "I" in "team".
A. after B. before C. that D. what
2、Although he did not do it___________, he definitely had some responsibility.
A．instantly
B．deliberately
C．accidentally
D．casually
3、A. mustn’t B. shouldn’t C. wouldn’t D. mightn’t
4、You needn’t be too concerned about what to wear to the party—it’s all _____ anyway, because you haven’t even been invited yet.
A. academic B. painful C. physical D. Economical
5、Some of them, ______ in rural villages, had never seen a train.
A. to be born and brought up B. born and brought up
C. having born and brought up D. having been born and brought up
6、Do you remember a certain occasion ________ you were in trouble and at that moment I gave you a hand?
A．which
B．that
C．when
D．where
7、We_______along a country lane when suddenly a car_______past us.
A.drove;drove B.drove;was driving
C.were driving;drove D.were driving;was driving
8、After several days of heavy rain the roof ______ with a loud noise, crashing onto the ground.
A. came out B. came down C. came on D. came up
9、WiFi also has a place in technologies like 5G and CBRS，which by the year 2020.
A.will be widely used
B.will have been widely used
C.used
D.is used
10、Each member of the community should acquire good habits and ______their behavior in an attempt to create a harmonious atmosphere.
A.refresh B.regulate C.resemble D.reveal
11、The Nintendo Switch released a game in 1995, and over the past two years, a new system______ its player a chance to play the game better.
A.gives B.has given
C.would have given D.given
12、-----It’s a pity that Nelson Mandela passed away.
------ But he will __________ in the memories of people worldwide.
A. live on B. stay on C. go on D. put on
13、—What do you think of her suggestion?
— ______, it would be much better to talk it later.
A.Usually B.Actually C.Regularly D.Eventually
14、I don’t believe what you said, but if you can prove it, you may be able to ________ me.
A．convince
B．confirm
C．guarantee
D．inform
15、Some institutions have established reading clubs to promote reading, but the effort, though ________, is far from enough.
A．appreciated
B．appreciating
C．having appreciated
D．to appreciate
16、Without coconuts, most of the tropical islands in the South Pacific ________ uninhabitable for both animals and people.
A.must have remained B.may have remained
C.need have remained D.would have remained
17、Bears ________ fat stores throughout the summer and fall to have energy enough to last them through winter sleep.
A.build up B.pack up C.bring up D.take up
18、China’s maternal and infant goods ecommerce platforms ________ heavily and speeding up their steps to expand offline channels.
A.invest B.are investing C.are invested D.have invested
19、In the past few years, we’ve seen works by Chinese sci-fi writers winning international ______.
A．conclusion
B．standard
C．potential
D．recognition
20、Under no ________ should passengers leave the underground platform and get on the tracks.
A.circumstances B.situations C.occasions D.cases
21、Too much time spent on gaming, smartphones and watching television is linked to heightened levels and diagnoses (诊断) of anxiety or depression in children as young as age 2, according to a new study.
Even after only one hour of screen time daily, children and teens may begin to have less curiosity, lower self-control, less emotional stability and a greater inability to finish tasks, reports San Diego State University psychologist Jean Twenge and University of Ceorgia psychology professor W. Keith Campbell. They were particularly interested in associations between screen time and diagnoses of anxiety and depression in youth, which has not yet been studied in great detail.
Twenge and Campbell found adolescents who spend more than seven hours a day on screens were twice as likely as those spending one hour to have been diagnosed with anxiety or depression. Overall, links between screen time and well-being were larger among adolescents than among young children.
“At first, I was surprised that the associations were larger for adolescents,” Twenge said. “However, adolescents spend more time on their phones and on social media, and these activities are more strongly linked to low well-being than watching television and videos, which is most of younger children’s screen time.”
The study provides further evidence that the American Academy of Pediatrics’ (AAP) established screen time limits—one hour per day for those aged 2 to 5, with a focus on high-quality programs—are valid (有效的), Twenge said. The study also suggests that similar limits—perhaps to two hours a day-should be applied to school-aged children and adolescents, said Twenge.
In terms of prevention, establishing possible causes and outcomes of low psychological well- being is especially important for child and adolescent populations. “Half of mental health problems develop by adolescence,” Twenge and Campbell wrote in their paper.
【1】What do we know about Twenge and Campbell’s study according to paragraph 2?
A．It requires further research.
B．It brings children less comfort.
C．It needs greater ability to finish.
D．It generates more public concern.
【2】What is a reason for the different degrees of impact on children?
A．The effects of the harmful contents.
B．Teens’ stronger addiction to screens.
C．The portability of electronic devices.
D．Teens’ negative emotions at discipline.
【3】Which of the following do the researchers want AAP to do?
A．Provide high-quality programs.
B．Issue minimum screen time limits.
C．Apply the limits to older children.
D．Present further evidence for prevention.
【4】What does this study focus on?
A．Adolescents’ mental problems.
B．The bad habits of the young adults.
C．Low level of mental health in youth.
D．The importance of the young population.
22、Do you know there are apps that make it easy to help others, our planet, and ourselves, so we lead more giving and meaningful lives? Check out four of the best ones and spring into action!
Be My Eyes
This app connects visually impaired people in need of some help with sighted people with a few minutes of spare time to offer through video calls. The help needed may be something like finding a missing object in the home. This app is available in over 150 countries and in more than 150 languages. Volunteers register and detail which languages they speak. When someone needs help,a message reminder appears on their device.
Zooniverse
Want to help with cutting edge global research? Zooniverse is an app with millions of registered volunteers that lets you become a citizen researcher! Help professional scientific researchers through your mobile device or the companion website. Global volunteers taking part in this exciting crowd sourcing project typically don5t have a scientific background but their contribution is highly valued.
My Selfless Act
This is a social networking site and app promoting the idea of giving back to the community through volunteering. It offers information on local volunteering opportunities globally and encourages the sharing of ideas and activities.
Aloe Bud
Created by someone who struggles with his mental illness, routine and remembering daily self-care, Aloe Bud is a welcoming and simple “self-care pocket companion” app. It gently reminds users about self-care activities in physical, mental and emotional needs. These reminders relate to anything from drinking enough water to taking screen breaks to maintaining connections.
【1】What is Zooniverse intended to do?
A．Help with disabled people.
B．Provide access to research.
C．Share community resources.
D．Organize self-care activities.
【2】What is probably the major concern of users who choose Aloe Bud?
A．Personal well-being.
B．Community service.
C．Professional development.
D．Volunteering information.
【3】Which app targets users with eye problems?
A．Aloe Bud.
B．Zooniverse.
C．Be My Eyes.
D．My Selfless Act.
23、 We are born to dance. Dancing changes the way we feel and think, and increases self-worth.
As a dance psychologist and teacher, I have witnessed the ways dancing has changed the lives of hundreds of people. Then I set up the Dance Psychology Lab so that I could combine my knowledge in psychology with dance, using science to study the relationship between movement and the brain. What I found was extraordinary: people with Parkinson's disease（帕金森病）and dementia（痴呆）getting a new chance to live longer；an increase in the self-worth of teenagers；reductions in sadness and anxiety in adults；increases in social bonding between people；and fundamental changes in the way people think and solve problems. All because of dancing.
Dancing stimulates the link between the body and the brain. The emotional high we get from dancing is due to dopamine（多巴胺）.This brain chemical plays a role in how we feel, and low levels are associated with feelings of anxiety, hopelessness, pain and mood swings. Dancing is a great way to overcome these negative feelings because the exercise and our emotional responses to the music we're hearing can increase the release of dopamine in different parts of the brain. As dopamine levels go up, we can shake off some of those negative feelings and float into an excited state.
Scientists suggest that the best time to learn a dance routine is before you go to sleep. This is because the brain builds new knowledge structures while we sleep, and it is these structures that strengthen our ability to learn and remember information.
In our lab experiments, we found that people who did 20 minutes of improvised（即兴的）dancing became more creative when answering creative-thinking tasks. For example, before dancing, participants could generate about four or five alternative uses for a common object such as a brick or a newspaper, but after dancing they could generate seven or eight.
【1】Why does the author build the Dance Psychology Lab?
A.To change how people think and feel. B.To help people increase their self-worth.
C.To find out different social relationships. D.To study how dancing influences the brain.
【2】What change does dancing bring in people?
A.Dopamine levels go up. B.Their intelligence is raised.
C.Sleep quality is improved. D.Parkinson's disease and dementia are cured.
【3】When is the suggested time to learn dance moves?
A.In the morning. B.Before sleeping.
C.While working. D.In the evening.
【4】What do improvised dancing experiments show us?
A.Dancing helps with our creativity.
B.Dancing creates more activities.
C.Dancing attracts more participants.
D.Dancing inspires us to use more objects.
24、These days, many gyms require clients to wear masks or face coverings. The good news: research suggests they don't actually hold up your performance.
Researchers at the University of Saskatchewan gathered a group of 7 men and 7 women, ranging from slightly inactive to excellent cyclists and tested the effects of wearing a three-layer cloth face mask, a surgical mask, and no mask on their exercise performance.
The study participants started with a brief warm-up on a fixed bike, then took a progressive intensity exercise test, during which it was vital for them to keep the same pedal rate while the resistance was continually increased until exhaustion (疲惫不堪). Something like the heart rate was recorded every 30 seconds.
The results suggested that wearing a mask had no effect on performance or muscle oxygen levels. Since there was no difference in time to exhaustion between conditions, the highest power reached at the end of each test was similar in mask and no-mask conditions for all participants, Professor Chilibeck explained. Researchers also did not see any effects of the masks during exercise on blood oxygen levels, which wouldn't decrease if breathing was not affected.
And while droplet (飞沫) spread was not measured, all masks used were tested in a previous study in which they were shown to effectively minimize droplet spread, according to Chilibeck. Though the participants represented a wide range of fitness levels, it's important to note that these tests were conducted on a very small sample size, and more research is needed on larger populations to draw sweeping conclusions about the general population.
【1】How did the researchers draw the conclusion?
A．By conducting an experiment.
B．By making brief analysis.
C．By observing normal cyclists.
D．By doing medical tests.
【2】What will happen if masks block your performance?
A．Your heart rate may keep stable.
B．You might produce less droplet.
C．Your blood oxygen levels will drop.
D．You will feel more tired than before.
【3】What is the author's attitude to the study?
A．Doubtful.
B．Favorable.
C．Disapproving.
D．Objective.
【4】Which of the following could be the best title for the text?
A．Why Should We Train with Masks?
B．Why Don't Masks Worsen Our Performance?
C．Do Masks Affect Our Performance?
D．Can We Train While Wearing Masks?
25、 My job was to make classroom observations and encourage a training program that would enable students to feel good about themselves and take charge of their lives. Donna was one of the volunteer teachers who participated in this ________.
One day, I entered Donna’s classroom, took a seat in the back of the room and ________. All the students were working on a ________. The student next to me was filling her page with “I Can’ts.” “I can’t kick the soccer ball.” “I can’t get Debbie to like me.” Her page was half full and she showed no ________ of stopping. I walked down the row and found everyone was writing sentences, ________ things they couldn’t do.
By this time the activity aroused my ________, so I decided to check with the teacher to see what was going on but I noticed she too was ________ in writing. “I can’t get John’s mother to come for a parents’ meeting.” ……I felt it best not to ________.
After another ten minutes, the students were ________ to fold the papers in half and bring them to the front. They placed their “I Can’t” statements into an empty shoe box. Then Donna _____ hers. She put the lid on the box, tucked(塞进) it under her arm and headed out the door. Students followed the teacher. I followed the students. Halfway down the hallway Donna got a shovel(铁铲) from the tool house, and then marched the students to the farthest corner of the playground. There they began to ________. The box of “I Can’ts” was placed at the ________ of the hole and then quickly covered with dirt. At this point Donna announced, “Boys and girls, please join hands and ________ your heads.” They quickly formed a circle around the grave(墓地).
Donna delivered the eulogy(悼词). “Friends, we gathered here today to ________ the memory of ‘I Can’t.’ He is ________ by his brothers and sisters ‘I Can’ and ‘I Will’. May ‘I Can’t’ rest in ________.”
She turned the students ________ and marched them back into the classroom. They celebrated the ________ of “I Can’t”. Donna cut a large tombstone(墓碑) from paper. She wrote the words “I Can’t” at the top and the date at the bottom, then hung it in the classroom. On those rare occasions when a student ________ and said, “I Can’t,” Donna ________ pointed to the paper tombstone. The student then remembered that “I Can’t” was dead and chose other statement.
【1】A.job B.project C.observation D.course
【2】A.checked B.watched C.noticed D.waited
【3】A.task B.computer C.problem D.farm
【4】A.scenes B.senses C.marks D.signs
【5】A.discussing B.doing C.describing D.drawing
【6】A.curiosity B.suspect C.sympathy D.worry
【7】A.trapped B.strict C.busy D.successful
【8】A.insert B.interrupt C.talk D.request
【9】A.taught B.shown C.forced D.instructed
【10】A.added B.wrote C.made D.folded
【11】A.cry B.pray C.dig D.play
【12】A.back B.bottom C.top D.edge
【13】A.drop B.raise C.fall D.lift
【14】A.keep B.thank C.forgive D.honor
【15】A.remembered B.punished C.removed D.replaced
【16】A.silence B.heart C.peace D.memory
【17】A.down B.up C.off D.around
【18】A.birth B.passing C.loss D.starting
【19】A.awoke B.reminded C.forgot D.apologized
【20】A.simply B.hardly C.seriously D.angrily
26、假如你是李津。你校的英语校报最近新开辟了“中国历史上的名人”(A Famous Figure in Chinese History)栏目。现请你给该栏目投稿，介绍一位你喜欢的中国历史人物。内容包括：
1.该人物是谁；
2.该人物的贡献：
3.该人物对你的影响。
注意：
1.词数不少于100字;
2.可适当加入细节，使内容充实、行文连贯。
A Famous Figure in Chinese History
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May 20, 2021
by Li Jin
邮箱： 