Your circle of friends may help you get a better reading on your overall health and wellness rather than just using wearable devices such as a Fitbit, according to researchers.
The study, published in the journal PLOS ONE, analyzed what the structure of social networks says about the state of health, happiness and stress.
"We were interested in the topololgy (拓扑学) of the social network — what does my position within my social network predict about my health and well-being said Nitesh V. Chawla, a professor at the University of Notre Dame in the US.
“What we found was the social network structure provides a significant improvement in predictability of wellness states of an individual over just using the data obtained from wearables, like the number of steps or heart rate,” Chawla said.
For the study, participants wore a Fitbit to capture health behavior data about walking, sleeping, heart rate and overall activity level. They also completed surveys and self-assessments of their stress, happiness and positivity.
Cbawla and his team then analyzed the data with a machine learning model, alongside the connections and characteristics of an individual's social network.
The study showed a strong correlation (相关性) between social network structures, heart rate, number of steps and level of activity.
Social network structure provided significant improvement in predicting one's health and well-being compared to just looking at health behavior data from the Fitbit alone.
For example, when social network structure is combined with the data from wearables, the machine learning model achieved a 65 percent improvement in predicting happiness.
The model also achieved a 54 percent improvement in predicting one's self-assessed health prediction, a 55 percent improvement in predicting positive attitude and a 38 percent improvement in predicting success.
This study asserts (断言) that without social network information, we only have an incomplete view of an individual's wellness state, and to be fully predictive or to be able to obtain interventions (干扰). It is critical to be aware of the social network, Chawla said.
1.What did the study find?
A.How people choose their friend circles.
B.What factors decide your friend circles.
C.How your circle of friends influences you
D.What your circle of friends says about your health.
2.How did the researchers draw their conclusions?
A.By comparing data. B.By giving examples.
C.By analyzing cause and effect D.By describing personal experiences.
3.What does the underlined word “critical” mean in the last paragraph?
A.Easy. B.Common.
C.Important. D.Challenging.
4.What do Chawla's words in the last paragraph tell us?
A.How fitness devices can connect your circle of friends
B.That a person's social network is part of his health picture.
C.The best ways to make friends and keep a healthy social circle
D.That wearable devices are not useful for understanding someone's health.
As a kid, Joanna Buckley wasn’t interested in science — until she had a chance to try it. That happened when she got a chemistry set for Christmas.
“Over the course of a few weeks, I’d completed every experiment. But in the process, I polluted my parent’s dining room carpet and burnt the kitchen worktop with the spirit burner,” she says.
Now science is Buckley’s job. She works in the chemistry department at the University of Sheffield in England. “I realize, first-hand, how important it is to have something or someone to show you why science is so great,” she says. Now the good news is that citizen science appears.
Citizen science takes the fun of experimenting a step further than Buckley’s at-home chemistry kit. That’s because these experiments are real, looking for novel answers.
“Compared with a one-off experiment, what’s cool about citizen science is that students get that this has a purpose,” Prunuske says. “Students want to do a good job, because they know scientists are going to use the new data in their own research.”
Long agrees. “Kids like that it’s real. And they like that it’s important, that it matters.” Citizen-science projects have made big discoveries. One found a previously unknown galaxy cluster （星系团）. Another project helped assess how much damage a big earthquake had caused in Japan. And one of the first citizen-science projects helped scientists learn where butterflies go every winter.
Some adults worry about teens losing interest in science. That’s one reason they hope that fun, exciting citizen-science projects can help them keep in touch, Long says. And she has some evidence that it’s working, “Last year, we did have a couple of students say, ‘I really think I want to be a scientist now. ’”
1.What is the purpose of paragraph 2?
A.To support trials can make teens interested in science.
B.To prove failure is the mother of success in science.
C.To state Buckley has a talent for science.
D.To praise Buckley for her strong will.
2.Why is citizen science more fun?
A.It carries out experiments frequently.
B.It must carry out experiments in groups.
C.It needs to seek for new solutions.
D.It demands to handle complex problems.
3.What can we know from what Prunuske said?
A.She participated in the experiment.
B.She took pride in what students took up.
C.Citizen science is popular with students.
D.Scientists are willing to employ students.
4.What is Long’s attitude towards citizen science?
A.Concerned. B.Supportive.
C.Doubtful. D.Unclear.
How It Feels to Float
by Helaia Fox
If you're looking for a moving story that explores themes of mental illness, grief (悲痛), and love, pick up a copy of How It Feels to Float and follow Biz as she comes of age. This moving novel will stay with you long after you finish reading it.
Two Can Keep a Secret
by Karen M. MeManus
Put on your crime-solving cap and get swept away in this thriller about a girl, a boy, and a string of unsolved murders. As threats and clues pile up, you’ll be burning the midnight oil trying to finish the book before dawn.
Forest of a Thousand Lanterns
by Julie C. Dao
The first book in the Rise of the Empress series takes the bones of a traditional fairy tale — a poor girl fated for power, an evil queen determined to stop her, love for someone who doesn't love back and magic — and gives them a richly imagined East Asian setting.
Dune
by Frank Herbert
If the Star Wars movies have made you fall in love with the space opera, eventually you're going to read Frank Herbert's most famous creation. The story of centuries-old political plotting — about warring factions (派系) battling over control of the extremely valuable planet Arrakis — is a classic and remains a wonderful introduction to the larger, more complex world of science fiction just beyond the Star Wars trilogies.
1.What is How It Feels to Float mainly about?
A.The murder of a teenage girl.
B.A girl's space adventures.
C.Challenges of growing up.
D.A poor girl with special powers.
2.What kind of book is Two Can Keep a Secret?
A.A fairy tale. B.A science-fiction story.
C.A love story. D.A detective story.
3.Which book is about battling for control of another planet?
A.How It Feels to Float B.Two Can Keep a Secret
C.Forest of a thousand Lanterns D.Dune
假定你是武汉市某高中学校学生会主席李华，为有效配合新型冠状病毒肺炎疫情防控，湖北省教育厅宣布延期开学， 请你写一封英文延期开学通知发布在校园网上。要点如下:
1. 严禁学生假期到校。
2. 进行远程教育、在线心理辅导。
3. 如有调整，另行通知。
注意:
1. 词数 100 左右；
2. 可以适当增加细节，以使行文连贯。 参考词汇:
心理的 psychological
疫情 epidemic
教育部 Ministry of Education
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假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有 10 处语言错误，每句中 最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除:把多余的词用斜线()划掉。
修改:在错的词下划一横线，并在该词下面写出修改后的词。
注意:1. 每处错误及其修改均仅限一词；
2. 只允许修改 10 处，多者(从第 11 处起)不计分。
It’s been two years when I joined the campus radio station. During this time, I had done several interviews. Every time I finish to writing an article, I am proud of myself for able to introduce my schoolmates to the things I’ve seen. It was difficult at times, but when I saw my stories publish in our school newspaper, you knew that it was something worth doing. My parents, teachers and schoolmates congratulated me on that I did. I felt happily when I shared a new story with them. The greatest thing about being the reporter is exchanging idea with others.
For a long time bats 1.(be) one of the most feared creatures in the animal kingdom. Many pop culture associations with them are2.(relate) to vampire. Though these associations are complete misunderstandings, bats do have a dark side as a 3.(danger) disease vector (传播媒介). So there is good reason to be exceptionally cautious if you come into contact with bats. However, the fact is4.bats play a significant role in keeping a balanced ecosystem.
Many organic farmers have learned about the benefits of 5. (have) bats nearby to help manage the amount of pests that show up without pesticides. One brown bat - about 6.size of a human thumb - can consume about 600 mosquitoes and other unwanted insects within an hour. They make for a fantastic, almost essential 7. (add) to pest management on any farm.
Even large government organizations have realized the economic benefits of bats. The United States Geological Survey estimates that bat contributions8.pest management save the country at9. (little) 3.7 billion dollars per year. Without them, we would likely experience a dramatic drop in food production, which would eventually make10.(it) way into our weekly grocery bills.
