If you look at the top of your phone ,you'll usually see a little symbol that says 3G or 4G. The "G" stands for the "generation" of your mobile network.But these symbols will become things of the past after 5G fully arrives.
On March 30th, 2019, Shanghai vice-mayor Wu Qing made the first 5G video call on a Huawei Mate X smartphone, CGTN reported.Shanghai has also become the first city in China to start testing 5G networks.Monaco became the first country in Europe to use a next-generation 5G mobile phone network based on technology from Chinese company Huawei.
It sounds obvious, but it’s important to understand just how much faster 5G is compared to current 4G speeds. 5G will not only be many, many times faster than your existing connection, it will be greatly faster than the broadband connection you have at home.
Now, 4G takes about 100 to 200 milliseconds* to send and receive data.But 5G will get it down to 1 millisecond or less.This big change will not only make our mobile Internet faster. It can be used in many other ways as well.
For example,5G will help to make self-driving cars safer.Today's self ﹣ driving test cars have one problem ﹣ lag.When the car"sees"an obstacle*, it sends this information to a data center and receives instructions. However, it takes time to send and receive this information. With this kind of lag, the cars might crash because they don't receive instructions in time. With 5G, this lag will be greatly lowered, making the cars safer,according to CNN.
5G could also be used to power the Internet of Things (IOT). This refers to a large online network that connects all things and people.Fast Internet speeds will be the key to developing this technology. For example, with IOT under 5G, your fridge could automatically* place an order online for eggs when it finds that there are no eggs left inside.
All in all, 5G will shape every type of technology that it touches. And you won't have to wait too long for that to happen. Though we’ve seen a lot of positive progress just in the last year, we still have a long way to go before 5G is anywhere near as common as 4G is right now.
1.From Paragraph ②, we can know that _______.
A.5G is widely used in Shanghai
B.it took lots of efforts to test 5G
C.China and Monaco is working on its 5G networks
D.5G would make it possible to take videos
2.The underlined word "lag" probably means " _______" in Chinese.
A.延迟 B.迷路 C.暂停 D.耗电
3.The fridge is mentioned to _______.
A.describe the importance of IOT
B.encourage people to try the new product
C.introduce how to use the Internet of Things
D.show 5G would make IOT more powerful
4.Which of the following would be the best title of the passage？
A.Can 5G Go Far？
B.How is 5G Changing Our Life？
C.5G is on the Way
D.China is Leading the World in 5G
The famous scientist and thinker, Charles Darwin, was born on February 12,1809. His family lived not far from the River Severn, England.
Darwin's father was a well-known doctor and the son of an still greater doctor and scientist. Darwin's father hoped that his son would also become a doctor.
As a boy, Darwin liked to go for walks in the fields and forests. He watched nature, and compared what he saw with everything he had read in science books. He also liked collecting very much. He collected many things, birds, eggs, stones and leaves. His father did not like that, Darwin not studying very well at school.
At the age of sixteen, Darwin was sent to Edinburgh University to study in order that he could become a doctor. But he was interested in the history of nature.
Then he was sent to study in Cambridge University. There he studied until 1831. Some time later he heard that the ship Beagle was going on a trip to South America and needed a scientist. His professor advised him to go. He said the trip would be just for Darwin, So when the ship left England in December 1831. Darwin was on it. He research lasted almost five years. The Beagle studied the waters in the sea near South America. It also visited New Zealand, Australia and islands in the Pacific. Darwin saw many new plants and animals. He collected all kinds of plants.
In 1842, Darwin went to live in Kent, where he continued his studies of changes in nature. Darwin understood that plants and animals are not always the same, and that they really change.
By 1859 Darwin had finished his famous book The Origin of Spedes*. It made a great hit in the world of science. He was against by the church and even by some scientists. But later, more and more scientists agreed with him.
1.What did Charles Darwin' s father do?
A.A worker. B.A doctor. C.A scientist. D.A teacher.
2.Charles Darwin had so many hobbies except that _______.
A.he liked to go for walks in the forests.
B.he liked watching nature.
C.he preferred collecting coins and stamps.
D.he loved the history of nature.
3.When did Daiwin leave England for a trip to South America?
A.In 1831. B.In 1832. C.In 1842. D.In 1859.
4.What can we learn from Charles Darwin?
A.Don' t care what parents say to us.
B.The trip can bring us wealth.
C.We should ask teacher for help when meeting problems.
D.Keep doing what we like and work hard, we'll succeed.
There are lots of great watery wonders in the world, but some are disappearing.
The Dead Sea
At 430 meters below sea level, the Dead Sea is Earth's lowest point on land. It is popular for its wonderful buoyancy*. The high salt content makes swimming more like floating.
Now the Dead Sea is actually dying. People are using water from the Jordan River, which takes water away from the Dead Sea. Since 1930, its surfing area has reduced by almost 40 percent.
Venice, Italy
With waterways instead of streets. This "Floating City" has attracted visitors for centuries. But no visit to Venice is complete without a ride on one of its famous gondolas, human powered water taxis. Water creates Venice. But water will also kill the city.
Built on soft earth, Venice has slowly been sinking for centuries. Now, with
rising sea levels caused by human activities, it's sinking faster. The city may disappear in the next 100 years.
Great Barrier Reef
Covering more than 2,300 kilometers of Australia's northeast coast, Great Barrier Reef is the world's largest reef ecosystem, and an ideal place for scuba divers*. Thousands of colorful coral and fish make homes in the blue sea water. It's like a big underwater party!
Sadly, the party might be over soon. The reef is dying. Human activities are
changing the weather. Warming ocean water kills the coral, and this causes problems up the food chain. The reef system might be gone by 2030.
1.If you swim in the Dead Sea, it’s easy to _______?
A.Float in the water . B.Sink in the water.
C.Disappear in the water. D.Kill in the water.
2.Which of the following is the shared cause of the problems all the three places are facing?
A.Water loss. B.Sea pollution.
C.Warming seas. D.Human activities.
3.If Tom wants to visit all the following places before they are gone, and he can only afford one in the next 10 years, where must he go?
A.The Dead Sea. B.Venice. C.Italy. D.Great Barrier Reef
On July, 27th, 2018, the comedy Hello, Mr Billionaire (《西虹市首富》) came out. Many people went to the cinema to watch Shen Teng, who played the ______ of the main character, Wang Duoyu. He acted so well that people just couldn’t stop laughing ______ the movie.
The movie ______ the story of a man named Wang Duoyu, who is poor and nameless. Then he will become very ______ overnight (一夜之间) because his grandfather ______ to give him 30 billion yuan. ______, he has to use up one billion yuan within a month first, or he will get______. It is not easy for him to do that. Wang Duoyu tries many times but ______ almost every time. When he is about to succeed, he finds his girlfriend kidnapped (绑架). To save her, he decides to ______ the money. Later, he finds out that it is only a test, for his grandfather wants to make sure he is a dependable person. Finally, he gets both the money and his girlfriend’s love.
Some people think Wang Duoyu’s story is too ______ to be true. They say there is no such thing as a free lunch. In my opinion, if you don’t take the movie too ______, it is fun to watch. Besides, I learn from it that money is not everything. In other words, there is always something more important than money, such as ______. Wang Duoyu makes the right decision when he is asked to ______ between love and money. I also have a better understanding of human nature (人性). It doesn’t matter if you want to be rich, but how to become rich makes a ______. Wang Duoyu doesn’t get rich at the cost of (以……为代价) losing his girlfriend. ______ these reasons, Hello, Mr Billionaire is a great comedy that is worth watching again and again.
1.A.actor B.film C.role D.actress
2.A.against B.through C.across D.behind
3.A.tells B.talks C.says D.speaks
4.A.upset B.rich C.happy D.poor
5.A.hopes B.happens C.promises D.refuses
6.A.But B.Besides C.Instead D.However
7.A.nothing B.anything C.something D.everything
8.A.succeeds B.falls C.argues D.fails
9.A.put up B.keep up C.give up D.take up
10.A.interesting B.good C.important D.funny
11.A.seriously B.carefully C.excitedly D.terribly
12.A.kindness B.friendship C.love D.happiness
13.A.choose B.tell C.offer D.notice
14.A.mistake B.choice C.mess D.difference
15.A.Of B.For C.From D.Under
–Dad, it’s difficult for me to clean the whole yard on my own.
-Why not ask your brother for help? __________________
A. No pain, no gain B. Every dog has its day
C. The early bird catches the worm D. many hands make light work
—Could you tell me _______ last night?
—About nine.
A.when was the online class over
B.when the online class was over
C.when is the online class over
D.when the online class is over
