阅读下面材料，在空格处填入适当的内容（1个单词）或括号中单词的正确形式。
Eating a diet rich in high-quality protein may help you maintain a healthy weight by 1. (make) you feel full longer, and fueling you with extra energy for exercising.
High-protein 2. (diet) aren’t balanced in terms of the essential nutrients, vitamins, and fiber your body needs. However, a diet that is too high in animal protein can 3. (actual) lead to weight gain over time. A study found that those who ate more red and processed meat put on 4. (much) weight, about one extra pound every four years, while those who ate more nuts over the course of the study 5. (gain) only half as much weight.
Some people are able to lose weight on high-protein diets in the short-term but this weight loss is not due to eating more animal protein, 6. simply due to consuming fewer calories. A safer way 7. (lose) weight is to reduce sugar intake and calories, while maintaining a nutritionally balanced diet 8. is rich in plant-based proteins.
For most of us, consuming the right balance of wholefoods each day will provide us 9. all the nutrients we need. There is also no 10. (evident) that protein from a powder or bar can improve athletic performance any more than protein from food.
Amazon.com Inc. is checking out of China’s fiercely competitive domestic e-commerce market. The company told sellers on Thursday that it would no longer ______ its third - party online marketplace or provide seller services on its Chinese website, Amazon.cn. ________,domestic companies will no longer be able to sell products to Chinese consumers on its e-commerce platform.
The decision marks an end to a long ________ by America’s e-commerce giants in the Chinese market. The firms entered the Chinese market with great attention in the early 2000s, only to ________ in the face of competition from China’s faster - moving Internet giants.
Amazon has been in talks to ________ its e-commerce business for goods imported into China with a Chinese competitor, NetEase Inc.’s Kaola, in a stock - for - stock transaction（交易）, according to a person familiar with the matter. That would remove the Amazon name from ________ e-commerce in China. Neither company would confirm the progress or details of those ________, nor would they say if they are continuing.
In a written statement, Amazon said it remained ________ to China through its global stores, Kindle businesses and web services. Amazon China’s president would leave to take on another role within the company, the company said. The China consumer - business team will report ________ to the company’s global team.
When Amazon first entered China in 2004 with the _________ of Joyo.com, it was the largest online seller for books, music and video there. Most Chinese consumers were using cash - on - delivery as their to form of ________. Today, Amazon China chiefly caters to customers looking for imported international goods such as cosmetics and milk powder and is a(n) ________ player in the booming Chinese e-commerce market.
Amazon China commanded just 6% of gross market volume in the niche（细分的）cross - border e-commerce market in the fourth quarter of 2018, versus NetEase Kaola’s 25% ________ and the 32% held by Alibaba Group Holding Ltd.’s Tmall International
Chinese consumers are becoming more fascinated with ________ brands. In 2011, 85% of Chinese consumers said they would always buy a foreign brand over a domestic one. By 2016, 60% of respondents said they preferred domestic over foreign brands. Shaun Rein, China Market research’s founder, said American e-commerce giants ________ obstacles in China because they didn’t offered the products or user experience that consumers were looking for.
1.A.assist B.expand C.operate D.tailor
2.A.As a result B.By contrast C.For example D.In addition
3.A.criticism B.negotiation C.struggle D.resolution
4.A.interact B.withdraw C.split D.survive
5.A.associate B.combine C.exchange D.supply
6.A.time - consuming B.long - suffering C.ever - lasting D.consumer - facing
7.A.talks B.businesses C.competitions D.instructions
8.A.related B.accustomed C.exposed D.committed
9.A.automatically B.directly C.regularly D.secretly
10.A.breakdown B.improvement C.purchase D.participation
11.A.refund B.payment C.sponsorship D.trade
12.A.complicated B.critical C.original D.insignificant
13.A.share B.budget C.volume D.maximum
14.A.foreign B.luxurious C.domestic D.fashionable
15.A.dealt with B.forgot about C.got through D.came across
Making the Most of Life Experiences
If you ask anyone what the purpose of life is, you’ll likely receive wildly different responses. The answer to this question is deeply personal because different things are important to us throughout the course of our lives. 1.
Finding ways to make the most of our experiences is a challenge we face every day. Here are some ways to make your experiences meaningful.
Follow your dreams.
The number one way to live a life free of regret is to follow your dreams. Passion will die without actions supporting them. 2.Every day take an action, no matter how small, to achieve your goals. Each day is a step forward and none of it is wasted.
Make lots of mistakes.
3. Many of my strongest memories come from the times I’ve failed，and those lessons have stayed with me. Failure is beneficial to us. And time allows me to see the value of even the most painful situation.
4.
Difficult and painful experiences shape our character but can also weigh us down. These prevent us from moving forward. So much of our progress in life relies on willpower and a healthy emotional stale. If you’re under stress, your body and mind both require time to recover. 5.
For me, life is about experiences. We all have to dream, work hard, and fail before we can achieve success. Maybe we’ll discover along the way that the journey is more important than the destination .
A.Take care of yourself.
B.Improve your personality.
C.Making mistakes is the surest path to grow as a person.
D.It’s best to rest, recover, and slowly build back up your strength.
E.Yet one thing stays with us no matter where we go: our experiences.
F.Though we try our best to make fewer mistakes, it is impossible to avoid them.
G.Though we can’t choose the outcome of our actions, we can choose to keep pursuing(追求）.
Teenagers who check social media for several hours a day are at the risk ofdeveloping ADHD (多动症), a study has concluded.
The research team, from the University of Southern California, tracked 2,600teenagers aged 15 and 16. They asked them how many times they checked theirphones and other digital devices for various reasons, and then monitored them for symptoms of ADHD. After two years, those who had checked their phones the mostoften were twice as likely as those who checked the least often to show signs ofADHD.
Writing in the JAMA medical journal, the scientists said, “Modern mediadevices immediately inform users when new text messages, social media postings, or videogame play invitations arrive. Exposure to such information may drawattention away from important tasks. Frequent distraction could interrupt thedevelopment of constant attention and organization skills.”
They believe constant access to instant entertainment also has an impact. Researcher Professor Adam Leventhal said all previous research had focused on the link between ADHD and televisions. “What’s new is that previous studies on thistopic were done many years ago, when social media, mobile phones, tablets andmobile apps didn’t exist. We can say with confidence that teens who are exposedto higher levels of digital media are significantly more likely to develop ADHDsymptoms in the future,” he said.
Leventhal believes the findings help fill a gap in understanding how newmobile media devices and seemingly limitless content pose a mental health risk forchildren. And the findings serve as a warning.
British scientists welcomed the findings. But Professor Andy Przybylski of theOxford Internet Institute said, “The study relies on survey responses provided bythe students in question. It is not clear if teachers or parents would rate the childrensimilarly or if the self-reported measure of digital screen use is related with eitheractual behavior or higher quality survey items.”
1.How did the researchers conduct the study?
A.By monitoring 2,600 teenagers with ADHD.
B.By tracking the participants for two years.
C.By analyzing data from previous researches online.
D.By controlling different teens’ time spent on social media.
2.What does Leventhal think of the exposure to higher levels of digital media?
A.It will cause diverse ADHD symptoms.
B.It will create higher ADHD risks.
C.It will weaken teenagers’ confidence.
D.It will have a major influence on organization skills.
3.What does Professor Andy Przybylski think of the study?
A.It provides a better understanding of the media.
B.It should have focused on parents’ responses.
C.Its findings are not reliable enough.
D.It’s a breakthrough in this field.
4.What can be a suitable title for the text?
A.The use of digital media is on the rise
B.Teens are increasingly exposed to ADHD
C.Heavy use of social media may increase ADHD risks
D.Teens’ exposure to modern media calls more attention
“Birds” and “airports” are two words that, paired together，don’t normally paint the most harmonious picture. So it really raises some eyebrows when China announces plans to build an airport that is for birds.
Described as the world’s first-ever bird airport, the proposed Lingang Bird Sanctuary(保护区）in the northern coastal city of Tianjin is, of course,not an actual airport. Rather，it's a wetland preserve specifically designed to accommodate hundreds-even thousands-of daily takeoffs and landings by birds traveling along the East Asian-Australian Flyway. Over 50 species of migratory (迁徙的）water birds，some endangered, will stop and feed at the protected sanctuary before continuing their long journey along the flyway.
Located on a former landfill site，the 150-acre airport is also open to human travelers.(Half a million visitors are expected annually.) However，instead of duty-free shopping，the main attraction for non-egg-laying creatures at Tianjin’s newest airport will be a green-roofed education and research center, a series of raised “observation platforms” and a network of scenic walking and cycling paths totaling over 4 miles.
“The proposed Bird Airport will be a globally significant sanctuary for endangered migratory bird species, while providing new green lungs for the city of Tianjin.” Adrian McGregor of an Australian landscape architecture firm explained of the design. Frequently blanketed in smog so thick that it has shut down real airports, Tianjin is a city---China’s fourth most populous----that would certainly benefit from a new pair of healthy green lungs•
1.The underlined phrase “non-egg-laying creatures” in Paragraph 3 refers to?
A. Visitors. B. Designers.
C. Endangered water birds. D. Planes.
2.What do we know about the airport according to the passage?
A. People cannot watch birds up close here.
B. It is located on a 150-acre landfill site.
C. It functions as an actual airport and a wetland preserve.
D. It provides migratory birds with food and shelter.
3.What can we infer from the last paragraph?
A. The airport will become a permanent home for birds.
B. Tianjin will win worldwide fame in the future.
C. Tianjin’s air quality will improve thanks to the airport.
D. Tianjin will be able to accommodate more people.
4.What is this passage mainly about?
A. Airports shut down and open up.
B. China is to open the first Bird Airport.
C. Airports turn into green lungs.
D. Birds are no longer enemies to airports.
Don't get mad the next time you catch your teenager texting when he promised to be studying. He simply may not be able to resist. A University of lowa(UI) study found teenagers are far more sensitive than adults to the immediate effect or reward of their behaviors. The findings may help explain why the initial rush of texting may be more attractive for adolescents than the long-term pay off of studying.
"For the teenager, 'the rewards are attractive." says Professor Jatin Vaidya，an author of the study. "They draw adolescent. Sometimes, the rewards are a kind of motivation for them. Even when a behavior is no longer in a teenager's best interest to continue, they will, because the effect of the reward is still there and lasts much longer in adolescents than in adults ."
For parents,that means limiting distraction (分心的事情）so teenagers can make better choices. Take the homework and social media dilemma: At 9 p.m., shut off everything except a computer that has no access to Facehook or Twitter, the researchers advise. "I'm not saying they shouldn't be allowed access to technology," Vaidya says. But some help in netting their concentration is necessary for them so they can develop those impulse-control skills.”
In their study,Vaidya and co-author Shaun Vecera note researchers generally believe teenagers are impulsive（冲动的)，make bad decisions，and engage in risky behavior because the frontal lobes（额叶）of their trains are not fully developed. But the UI researchers wondered. whether something more fundamental was going on with adolescents to cause behaviors independent of higher-level reasoning.
"We wanted to try to understand the brain's reward system how it change from chillhood to adulthood," Says Vaidya, who adds the reward character in the human brain is easier than decision-making. “We've been trying to understand the reward process in adolescence and whether there is more to adolescence behavior than an under-developed frontal lobe,”he adds.For their study ,the researchers persuaded 40 adolescents, aged 13 and 16,and 40 adults, aged 20 and 35 to participate.
In the future,researchers hope to look into the psychological and neurological（神经学上的）aspects of their results.
1.What does the passage mainly tell us?
A.The initial rush of texting is less attractive for adolescents than the long-term pay off of studying.
B.Always, rewards are attractive to teenagers.
C.Resistance can be controlled well by adolescents.
D.Getting rewards is the greatest motivation for adolescents to study.
2.Which statement agrees with Vaidya's idea?
A.The influence of the reward is weak in adolescents.
B.Parents should help children in making decisions.
C.Children should have access to the Internet.
D.Children need help in refocusing their attention.
3.What result does teenagers' brain underdevelopment lead to?
A.Doing things after some thought.
B.Making good decisions.
C.Joining in dangerous actions.
D.Escaping risky behavior.
4.How did the researchers carry out their study?
A.By making a comparison of brain examinations.
B.By examining adults’ brain.
C.By examining teenage brain.
D.By building the train’s reward system.
