What is the hottest topic at your school recently? In Taiyuan No.55 Middle School,it's money.

    The school held an activity called “making money” last weekend.About 200 Junior 1 and Junior 2 students were divided into 30 teams.They went out to make money by selling things.

    What did they choose to sell? Some sold newspapers;some chose bottled water;some sold environmentally friendly shopping bags and bamboo bamboo baskets.

    Hu Qing's team decided to sell some useful books in front of the Children Activity Center.They thought parents would like to buy the books for their children.But unfortunately,they met urban management officers（城管）.The officers asked them to leave.“ We played hide-and-seek（捉迷藏）with the officers for the whole morning”said Hu. “Finally we had to give up.”

    Wang Bing and her team sold ice cream in a square.They didn't meet any officers.But few people were interested in what they were selling.The team then put up a board saying “For Country Kids”.It worked.More people came to their stall（小摊）.A foreigner even gave them 100 yuan. “He didn't want any change.He said he wanted to help the children,” said Wang.“ We were touched.” Later that day they gave the 100 yuan and more to the “Project Hope” office.

    Meng Zhaoxiang and his team were luckier.They sold all their cakes in four hours,spending 39.5 yuan and getting back 80 yuan.They made 40.5 yuan.“It was not easy to make the money,” said Meng.“ Some people just looked.Others just tasted but didn't buy.Now I know how hard it is for our parents to make the money we need to lead happy lives.”

    Graph can be a very useful tool for conveying information especially numbers， percentages, and other data . A graph gives the reader a picture to interpret. That can be a lot more pages and pages and pages explaining the data .

    Graphs can seem frightening, but reading a graph is a lot like reading a story. The graph has a title ,a main idea ,and supporting details.You can use your active reading skills to analyze and understand graphs just like any other text .

    Most graphs have a few basic parts: a caption or introduction paragraph, a title , a legend or key, and labeled axes. An active reader looks at each part of the graph before trying to interpret the data. Captions will usually tell you where the data came from (for example, a scientific study of 400 African elephants from 1980 to 2005). Captions usually summarize the author's main point as well. The title is very important. It tells you the main idea of the graph by stating what kind of information is being shown. A legend, also called a key ,is a guide to the symbols and colors used in the graph. Many graphs, including bar graphs and line graphs, have two axes that form a corner, Usually these axes are the left side and the bottom of the graph .Each axis will always have a label. The label tells you what each axis measures.

Bar Graphs

    A bar graph has two axes and uses bars to show amounts. In Graph 1 ,we see that the x-axis shows grades that students earned, and the y-axis shows bow many students earned each grade .You can see that 6 students earned an A because the bar for A stretches up to 6 on the vertical measurement. There is a lot of information we can get from a simple graph like this(See Graph 1).

Line Graphs

    A line graph looks similar to a bar graph ,but instead of Bars, it plots points and connects them with a line .It has the same parts as a bar graph – two labeled axes –and can be read the same way .To read a line graph, it's important to focus on the points of intersection rather than the line segments between the points, This type of graph is most commonly used to show how something changes over time.

    Here is a graph that charts how far a bird flies during the first Five days of its spring migration (See Graph 2).

    The unit of measurement for the x-axis is days. The unit of measurement for the y-axis is kilometers. Thus we can see that ,on the first day, the pipit flew 20 kilometers. The line segment goes up between Day 1 and Day 2,which means that the bird flew farther on Day 2.If the line segment angled dawn, as between Day 4 and Day 5,it would mean that the bird flew fewer  kilometers than the day before. This line graph is a quick, visual way to tell the reader about the bird's migration.

    Pie Graphs

    A typical pie graph looks like a circular pie. The circle is divided into sections, and each section represents a fraction of the data. The graph is commonly used to show percentages; the whole pie represents l00 percent, so each piece is a fraction of the whole.

    A pie graph might include a legend，or it might use icons or labels within each slice. This pie graph shows on month's expense, (See Graph 3 ).

    Food $ 25

    Movies $ 12

    Clothing $ 36

    Savings $ 20

    Books $ 7

    In agreement with the Agenda of the First Global Employment of Beijing Organizing Committee for the 2022 Olympic and Paralympic, the applicants from Hong Kong, Macao, Taiwan and overseas who have passed the first qualification review will take a written examination. Below lists the relevant information:

    ⒈Date & Time

    April 15th, 2017 (Saturday), 9:00 – 12:30.

    The applicants are required to enter the examination room before 8:30 am.

    ⒉Location

    No. 23 Baiduizijia, Haidian district, Beijing (Capital Normal University Dongyi Zone)

    Exam Site No.6; Exam Room: C206

    ⒊Notice

    ⑴All applicants who have passed the first qualification review please log on Personal application center of the recruitment page (http://recruit.beijing2022.cn) to download and print the admission ticket from April 7th -15th 2017.

    ⑵All candidates shall bring the admission tickets and valid IDs (Mainland Travel Permit for Hong Kong and Macao Residents, Mainland travel permit for Taiwan residents, Foreign passport and etc.)

    ⑶Please prepare one's own writing materials including 2B pencil, eraser and black/blue pen.

    ⑷The candidates will not be allowed to enter the examination room if late for 30mins, and will be also prohibited to leave within 60mins since the entering into the room or 15mins earlier than the deadline.

    Kind reminder: Due to the heavy traffic near the exam location, parking space will be so limited that all candidates should take public transport.

    ⒋Transport Route

    ⑴Subway: No.9 subway to Baiduizi station exit A, 50 meters to North.

    ⑵Bus: No. 61 / 92 bus to Shouti South Road South Gate station, and 3 minutes' walk to the destination.

    Kind reminder: Capital Normal University Dongyi Zone is not located in the main campus of Capital Normal University, please plan your route properly.

Beijing Organizing Committee for the 2022 Olympic and Paralympic Winter Games

    April 7, 2017

    We often seek food after focused mental activity, like preparing for an exam. Researchers guess that too much thinking consumes a lot of energy from the brain. So the brain, sensing that it may soon require more calories to keep going, apparently leads to bodily hunger, and even though there has been little physical movement, we eat.

    The researchers note that tiring activity both increases the amount of blood sugar and lactate(乳酸盐)circulating in the blood and increases blood flow to the head.

    Because the brain uses sugar and lactate as fuel, researchers wondered if the increased flow of fuel—rich blood during exercise could feed a worn—out brain and reduce the urge to overeat.

    Thirty—eight healthy college students were invited to determine their fitness and metabolic(新陈代谢)rates and to report what their favorite pizza was. Afterward, they sat quietly for 35 minutes before being given as much of their favorite pizza as they wanted. At a later date, the volunteers returned and spent 20 minutes making selections from college and graduate-school entrance exams.

    Next, half the students sat quietly for 15 minutes, before being given pizza. The rest of the volunteers spent those 15 minutes doing intervals on a treadmill(跑步机)two minutes of hard running followed by about one minute of walking, repeated five times. These students were then allowed to gorge on pizza, too. But by and large, they did not overeat.

    When the researchers factored in(将……作为因素考虑)the calories burnt on running, they determined that those students actually consumed 200 fewer total calories after their brain workouts than the resting students.

    The researchers do not know if the runners consumed extra calories at dinner. They also cannot tell whether other types of exercise would have the same effect as running, although the researchers say they suspect that if an activity causes someone to break into a sweat, it should also increase blood sugar and lactate, feeding the brain and weakening hungers call.

    While we all try to find happiness, sometimes we still end up feeling low. While most people can control this feeling, low moods can stay with some, leading to depression. About 322 million people suffered from depression in 2015, according to a report by the World Health Organization in February. This is more than 4 percent of the world's population.

    Depression is described by the WHO as a mental disorder. It has several symptoms including sadness, loss of interest and feelings of low self-worth. In severe cases, depression may even lead to suicide.

    The number of people living with depression is increasing. The WHO reported a rise of 18.4 percent between 2005 and 2015. Young people are a group known to suffer with depression. “The pressures on today's youth are like no other generation, perhaps," Dan Chisholm, an official of WHO, told Reuters.

    In China, depression among young people is on the rise, Zhu Zhuohong, a psychology professor with the Chinese Academy of Sciences, told Xinhua News Agency. Competition to outperform others, especially in education, can cause a lot of pressure for Chinese youth.

    Almost 1.2 million Chinese people aged 15 to 24 suffer from depression, according to a report released by British science journal The Lancet in May.

    Luckily, more and more efforts are being made to deal with this problem. This year's World Health Day, held on April 7, will focus on depression. The day will highlight the “Depression: let's talk" campaign. The campaign aims to make sure that people with depression both seek and get help.

    Self-driving cars have been backed by the hope that they will save lives by getting involved in fewer crashes with fewer injuries and deaths than human-driven cars. But so far, most comparisons between human drivers and automated vehicles have been unfair.

    Crash statistics for human-driven cars are gathered from all sorts of driving situations, and on all types of roads. However, most of the data on self-driving cars' safety have been recorded often in good weather and on highways, where the most important tasks are staying in the car's own lane and not getting too close to the vehicle ahead. Automated cars are good at those tasks, but so are humans.

    It is true that self-driving cars don't get tired, angry, frustrated or drunk. But neither can they yet react to uncertain situations with the same skill or anticipation of an attentive human driver. Nor do they possess the foresight to avoid potential perils. They largely drive from moment to moment, rather than think ahead to possible events literally down the road.

    To a self-driving car, a bus full of people might appear quite similar to an uninhabited corn field. Indeed, deciding what action to take in an emergency is difficult for humans, but drivers have sacrificed themselves for the greater good of others. An automated system's limited understanding of the world means it will almost never evaluate (评估) a situation the same way a human would. And machines can't be programmed in advance to handle every imaginable set of events.

    Some people may argue that the promise of simply reducing the number of injuries and deaths is enough to support driverless cars. But experience from aviation (航空) shows that as new automated systems are introduced, there is often an increase in the rate of disasters.

    Therefore comparisons between humans and automated vehicles have to be performed carefully. To fairly evaluate driverless cars on how well they fulfill their promise of improved safety, it's important to ensure the data being presented actually provide a true comparison. After all, choosing to replace humans with automation has more effects than simply a one-for-one exchange.