If you look at the top of your phone，you'll usually see a little symbol that says 3 G or 4 G.The "G" stands for the "generation" （代） of your mobile network.But the symbols will become things of the past after 5 G networks fully arrive.
On March 30，Shanghai vice-mayor Wu Qing made the first 5 G video call on a Huawei Mate X Smartphone.Shanghai has also become the first city in China to start testing 5 G networks.
About 100 times faster than 4 G networks，5 G will let people download and upload data（數(shù)據(jù)） faster than ever before.But 5 G won't just bring faster mobile internet.People can use it for many other things as well.
For example，5 G will help to make self-driving cars safer.Today's self-driving test cars have one problem-lag（延遲）.When the car "sees" an obstacle（障礙物），it sends this information to a data center and receives instructions，However，it will be some time before it sends and receives this information.With this kind of lag，the cars might crash because they don't receive instructions in time.With 5 G，this lag will be greatly lowered，making the cars safer.
5 G could also be used to power the internet of things （IoT），that is，a large online network that connects all things and people.Fast internet speeds will be the key to developing this technology.
The IoT could be used in a lot of ways.For example，with IoT，your refrigerator could automatically （自動(dòng)地） place an order online for eggs when it finds that there are no eggs left inside.
（1）Which city was 5 G tested for the first time？ BB
A.Beijing
B.Shanghai.
C.Shenzhen.
D.Guangzhou
（2）What can we infer（推測(cè)） according to the passage？ BB
A.5 G is widely used in China now.
B.5 G networks will make our lives more convenient.
C.There are no symbols at the top of our phones
D.5 G is only used on Huawei Mate X Smartphone
（3）The writer uses self-driving cars as an example to CC.
A.explain how self-driving cars work
B.warn about the possible dangers of self-driving cars
C.explain how 5 G's fast speed can be helpful
D.Compare the differences between 4 G and 5 G
（4）What is IoT according to the passage？ DD
A.A robot that can do housework.
B.An online store where you can buy anything.
C.A new skills that can be used in every family.
D.A large online network that connects things and people.
（5）Which sentence is right according to the passage？ AA
A.Our refrigerator can order eggs online for us.
B.Robots can help us buy eggs online.
C.5 G will help us buy eggs quickly.
D.5 G will help us buy eggs and drive cars at present.
【答案】B；B；C；D；A
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/5/27 14:0:0組卷：0引用：1難度：0.5
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1．Passage A
Many of us have read stories or seen films about space-creatures.They come to Earth in spaceships that look like flying saucer（飛碟）.These space-creatures do not look like human beings at all，but they are usually very intelligent（聰明）.In one film，they were tiny little men with large heads.When they landed on Earth，they knew exactly what to do.They went straight to the President's palace and made him their prisoner！
The stories about space-creatures are，of course，not true.Space-Creatures exist only in story-books and in films，just like giants（巨人） and fairies.
But many scientists are asking this question.Is there life on other planets？There are millions of planets in the Universe，and Earth is just one of them.Human beings have lived on Earth for thousands of years.Could there be living things on other planets too？Many people believe that the other planets in the Universe are not suitable for living things.They are either too hot or too cold.Some of them have poisonous gases on them that will kill any living thing.
Are scientists sure that there is no life on other planets？
At this stage（階段） we still cannot be sure.All the planets，except the Moon and Mars，are so far away that it will take hundreds of years for spaceships to reach them！
（1）The best title for this passage is "".
A.Scientific Wonders：Space-creatures
B.Is There Life on Other Planets
C.Are Scientists Sure
D.Stories about Space-creatures
（2）It is impossible for scientists to know about other planets in the Universe because.
A.all the planets，except the Moon，are so far away that it will take hundreds of years for our spaceships to reach them
B.all the planets are too far to reach
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D.All the planets are only too far to reach
（3）Which of the following statements is not true according to the passage？
A.The stories about space-creatures are true.
B.Space-creatures are in stories.
C.Space-creatures are in films.
D.Many scientists are asking if there is life on other planets.
（4）Which of the following statements is true according to the passage？
A.All the planets are either too hot or too cold.
B.Space-creatures are only in story –books and in films.
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（5）In the passage "straight" means.
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