Our ancestors used stars to guide them on a clear night. Now we have navigation systems (导航系统) to help us find our way, with the latest being the Beidou Navigation Satellite (卫星) System(BDS).
The BDS is completely built by Chinese engineers. With the last satellite from the Xichang Satellite Launch Center flew into space on Jun 23, 2020, the network of 59 satellites has been completed. On July 31, 2020, Beidou started providing full-scale services (全方位服务). It’s difficult to imagine what those satellites can’t do in our daily lives.
When you unlock one of the Hellobike’s bicycles, you are using the BDS. This popular bike-sharing company came out with two new bike models which have the positioning service this year. Users can also find shared bikes more exactly thanks to Beidou.
However, the BDS doesn’t just work on way. As the largest space-based system in China, Beidou uses a special two-way communication system, including its ability to receive messages sent by people from areas with poor communication signals. It isn’t for users to chat online. Instead, it plays a role when disasters like earthquakes happen and communications don’t work.
After the Wenchuan earthquake in 2008, all ground-based communication tools couldn’t work. Though Beidou could only send 120 characters(字符) in just one message at that time, communication between these poor areas and helping centers was successful. Now, it can sent 1, 200 Chinese characters in a message. It is widely used in areas such as disaster alarms, and information release.
Now, Beidou is more and more widely used in our everyday life. As SunJiadong, former chief designer of the BDS said, “Beidou can be used in more industries than you can imagine.”
【小题1】In the old days, people use _________ to guide them on a clear night.A.the moon | B.the sun | C.the BDS | D.stars |
A.23 | B.31 | C.59 | D.120 |
A.战争 | B.灾难 | C.选举 | D.奇迹 |
A.The BDS first started working on June 23, 2020. |
B.The BDS can provide us with a lot of helpful services. |
C.People can find their lost bicycles thanks to Beidou. |
D.The BDS can send 120 Chinese characters in a message now. |
A.the BDS | B.great engineers | C.shared bikes | D.an earthquake |
But sometimes, the hardest part about exercising is getting started for Tony. He wants to have an APP that might be able to help him. | A. With BEAKER, you can do Chemistry classes safely. This app offers more than 150 chemicals that you can mix together in a safe environment. You can select the chemicals to mix to see how they react to each other. B. Mocation is simple to use. You can search by film title, country, or the name of your favorite actor or director. It provides a list of filming locations in your area, including how far they are from you. C. RunKeeper is an app that tracks(记录)when you exercise. Not only that, but it also helps you set goals and gives you plans to help you reach those goals. Exercising can be hard, but RunKeeper will help you every step of the way. D. Wiki provides you with step-by-step guides on almost anything you can imagine. The app has 180,000 articles covering various topics, including cooking, tech, fitness, and fashion. E. Shazam is a useful app that can help you identify music based on a short sample of the song. The app uses the microphone on your phone to listen to the music. If the song does have lyrics, Shazam can show them to you. F. Pocket is an app that lets you save all the fun things you find online to one place—Your Pocket! You can easily enjoy them again when you have more time. You can even view them offline! It also leis you organize the things you save. G. Calm is an app that can help you relax and sleep better. In fact, the organization Center for Humane Technology has even named it the “Happiest App in the World”. The app is to “make the world happier and healthier”. |
Big data(数据) is a lot of sets of information that are put together so they can be used by a computer program. The computer program looks for different kinds of answers or patterns in the data. Big data can have different kinds of information from many sources, such as information that comes from schools, social media sites, companies, and governments. One set of data can have people’s names and addresses. Another set can have what they like, where they go to school, and how much time they spend on the computer.
________ The government uses it to understand how many people travel on buses or trains. This information is then used to make bus or train systems better. Some schools use big data to understand which children may need extra help in class. The teacher can then give certain students more help or support so those students can succeed in school. Companies use big data, too. It helps them understand who buys their products. For example, one company uses weather data to see when people eat the most ice cream.
________ Some hospitals use big data to predict if a baby who is born too early will get sick. The hospital can then take extra steps to take care of that baby so he or she does not get sick. Big data can also be used for bad reasons. It can be used to predict which kinds of people are likely to break the law or hurt others, even if they have not done anything wrong.
________ It is because the computer programs used to look at big data and understand it are written by people. People think a certain way. Because they think a certain way, they build a model of those ideas. These ideas are then used to look at the data. Sometimes, these ideas are helpful for people or businesses. Other times, bad ideas can cause problems for certain groups of people.
【小题1】One company uses weather information to ________.A.help children in need | B.know when people will visit the hospital |
C.find out who rides the bus or train | D.understand when people will need ice cream |
① Big data can be used for good reasons.
② How can big data be used for good and bad things?
③ Big data can be used in many ways.
A.①②③ | B.③①② | C.③②① | D.②①③ |
A.big data can be used for good reasons |
B.we can use big data in a number of ways |
C.big data can be used for both good and bad reasons |
D.we can use big data to prevent babies from getting sick |
A.what big data is and how it is used |
B.what schools and hospitals people like |
C.where important data is collected and stored |
D.how big data is controlled by governments and companies |
The following news is from China Daily (www. chinadaily. com) which covers different fields.
J. K. Rowling Publishes New Story Online The famous English writer J. K. Rowling said on Tuesday, “I’m producing a new story called The Ickabog which will be free to read online.” It’s the first children’s book by J. K. Rowling, since she finished Harry Potter in 2007. | |
China Sends Beidou Successfully China sent the last satellite of Beidou into space on Tuesday. The satellite is the 59th in the Beidou family. It marks the completion of Beidou, one of the networks around the world, along with the United States’ GPS, Russia’s GLONASS and the European Union’s Galileo. | |
Jeff Bezos Is Taking Action The world’s richest person Jeff Bezos, the boss of Amazon. com, announced on Monday that he would put in 10 million dollars to start a great project, which would support scientists, researchers and NGOs to help save the animals in danger and protect the natural world. | |
China and France Holds an Online Concert To deepen the friendship between the people of China and France, artists from both countries stepped onto the same stage and performed online on Monday. The online concert allows people to enjoy both traditional Chinese folk songs and French classics. | |
The Vaccines (疫苗) May Be Ready Many countries are developing the vaccines for COVID-19(新型冠状病毒肺炎) by different methods. Some are even going through the final step to decide how well the vaccine works and if it’s safe. With more than 160 possible vaccines under study, experts hope that vaccine may be ready by the end of 2020. |
【小题1】According to the 2nd piece of news. Galileo is a ________.
A.rocket | B.person | C.network |
A.Jeff Bezos. | B.J. K. Rowling. | C.Scientists. |
A.The Ickabog is a cheap children’s book by J. K. Rowling. |
B.The vaccines for COVID-19 are ready in many countries now. |
C.If you watch the online concert, you can enjoy traditional songs. |
A.Environmental protection. | B.Modern technology. | C.Medical care. |
A.The Vaccines May Be Ready | B.Jeff Bezos is Taking Action | C.China and France Holds an Online Concert. |
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