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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 moonB.the sunC.the BDSD.stars
【小题2】How many satellites does the BDS contain?
A.23B.31C.59D.120
【小题3】The underlined word “disaster” means _________ in Chinese.
A.战争B.灾难C.选举D.奇迹
【小题4】Which of the following is TRUE according to the passage?
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.
【小题5】The passage mainly talks about _________ .
A.the BDSB.great engineersC.shared bikesD.an earthquake
2021·广东茂名·二模
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左栏是五位手机用户的个人需求,右栏是新开发的APP软件使用说明。请为每位用户选择合适的APP。
【小题1】Helen feels like there isn’t enough time in the day to read news stories or watch funny cat videos. She hope the APP could just save all of these things in one place for users to enjoy later on.
【小题2】Mike has ever heard a song on the radio and he wanted to know what it means. He doesn’t know any lyrics (歌词)of the song. He wants to have the APP that can help him find the songs with lyrics quickly.
【小题3】Exercising is important.
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.
【小题4】Ken found it difficult to focus(专注)on one thing. He sometimes feels stressed or worried. He needs a special APP for himself to relax and sleep better.
【小题5】Peter want to visit the places that our favorite movies were filmed. He needs an App to tell him all the information.
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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 needB.know when people will visit the hospital
C.find out who rides the bus or trainD.understand when people will need ice cream
【小题2】Put the sentences back into the blanks, which is the right order?
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.①②③B.③①②C.③②①D.②①③
【小题3】The main idea of Paragraph 3 is ________.
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
【小题4】This passage is about ________.
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.

根据短文内容选择最佳答案。
【小题1】According to the 2nd piece of news. Galileo is a ________.
A.rocketB.personC.network
【小题2】Who is putting in 10 million dollars to start a great project?
A.Jeff Bezos.B.J. K. Rowling.C.Scientists.
【小题3】Which of the following is true according to the given information?
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.
【小题4】What is probably the topic of the 2nd piece of news?
A.Environmental protection.B.Modern technology.C.Medical care.
【小题5】Which one can you read if you are interested in health?
A.The Vaccines May Be ReadyB.Jeff Bezos is Taking ActionC.China and France Holds an Online Concert.

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