=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．
Now，4G takes about 100 to 200 milliseconds（毫秒）to send and receive data（数据）．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（障碍物），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（撞击）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 refrigerator could automatically（自动地）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．
（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 is working on its 5G networks |
| D． |
5G would make it possible to take videos |
（2）Compared with 4G，5G could be ．
| A． |
cheaper |
| B． |
faster |
| C． |
safer |
| D． |
busier |
（3）The underlined word"lag"probably means" "in Chinese．
| A． |
延迟 |
| B． |
迷路 |
| C． |
暂停 |
| D． |
耗电 |
（4）The refrigerator 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 |
（5）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 |
回答问题阅读短文，然后很据短文内容，简要回答下列问题。
Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest is pollution. To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it.
Man has been polluting the earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in one place, man could move to another place. But this is no longer true. Man is now slowly polluting the whole world.
Air pollution is still the most serious. It's bad for all living things in the world, but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.
Many countries are making rules to fight against pollution. They stop people from burning coal(煤) in houses and factories, and from putting dirty smoke into the air. Pollution by SO2 is now the most dangerous kind of air pollution. It is caused by heavy traffic. It is sure that if there are fewer people driving, there will be less air pollution.
The earth is our home. We must take care of it. That means keeping the land, water and air clean.Is our life much easier than it was hundreds of years ago ?
________________________________________________________.Why was the pollution not serious many years ago?
________________________________________________________.What kinds of pollution are mentioned in the passage?
________________________________________________________.How do they fight against pollution in many countries?
________________________________________________________.What is the passage mainly about?
_________________________________________________________.
选择答案 阅读下列材料，从A,B,C三个选项中，选出最佳选项回答问题。
 |
Name |
I AM A SINGER |
Singers |
Han Hong, Li Jian, A-lin, Zheng Chunyuan, Sun Nan, Tan Weiwei and so on. Each time there are seven singers will take part in the competition, and one of them will leave . |
|
Show Time |
At 22:00 on Friday night |
Green School is a bilingual(双语的) school for children between
6-15.We want a sports coach, a language teacher, a driver.
| Job |
Language |
Skill |
Need to be |
| Sports coach |
Chinese English |
Can play soccer and tennis well |
Healthy, strong |
| Language teacher |
Chinese English |
Does well in English teaching and is good with children |
|
| Driver |
Chinese English |
At least has license B and 10 years’ driving experience |
CarefuKind, patientl, healthy |
When does the TV show start every week?
A. On Wednesday night
B. On Friday night
C. On Sunday nightHow many people will leave in the competition each time?
A. OneB. Two C. ZeroWhat kind of sports may the coach not be good at?
A. Tennis B. BasketC. SoccerWho needs to be kind and patient according to this form?
A. Driver B. Language teacherC. Sports coachWhich sentence in the following isn’t true?
A. The three persons can speak Chinese and English.
B. The driver only need to have 10 years’ driving experience.
C. The language teacher should be good with children.
判断正误阅读下面的材料，判断下列句子是否符合短文内容。符合的写“T”,不符合的写“F”。（T=True，F=False）
Can animals be made to work for us? Some scientists think that one day animals may be taught to do a number of simple jobs. They spent that in a film or on TV. We may see elephants, monkeys, dogs, bears, or other animals doing a lot of things. If you watch carefully, you may find that those animals are given something to eat in return for doing them. The scientists say that many different animals may be taught to do a number of simple jobs if they get something to eat.
Of course, as we know, dogs can be used to guard a house, and elephants can be used to do some heavy jobs .And we can also teach animals to work in factories. Apes(猿猴),for example have been used in America to help make cars and scientists believe that these monkeys may one day get in crops and even drive trains.Animals must work for us one day.
Animals are given something to eat in return for doing things.
Dogs can be used to do some heavy jobs.
The scientists think that animals mustn’t be taught to do simple jobs if they don’t get something to eat.
The scientists believe that the monkeys can drive trains one day.
People know the danger of fires. It is good for a family to learn how to prepare for a fire. Here are some suggestions (建议).
Put a smoke alarm(警报) in the house. The alarm makes a loud sound when there is too much smoke in the house. The sound tells everyone to leave the house at once.
Make escape (逃脱) plans. They should know all the way out of the house. If there is a fire, everyone follows the plan to get out. One part of the plan is to check all the windows to make sure they can be opened easily.
Buy fire extinguishers(灭火器) in the house. Everyone in the family should know how to use them.
Practise for a fire. Parents do fire practice because they teach children about fire safety. Everyone in the family should know the following fire rules.
★Don’t open a hot door! The fire can grow more quickly if you open the door.
★Stay close to the floor! Smoke can be more dangerous than fire. The best air is near the floor because smoke rises(升起).
★What will you do if your hair or clothes start to burn? First, stop! Don’t run! The fire burns faster because of more air. Drop! Fall to the floor. Then roll(滚动)! Turning over and over will make the fires go out. Put a blanket around you to keep air away from the fire that may still be on you.
There are many possible causes(原因) for fires. A wise family is ready all the time. If there is a fire, don’t forget to call 119 for help.What does it mean when the smoke alarm rings at home?
| A．You have to get up. |
| B．Water is running to the floor. |
| C．Something is burning. |
| D．Someone breaks your window. |
The writer advises(建议) people to do the following to prepare for a fire EXCEPT that _____.
| A．they practise for a while |
| B．they make escape plans |
| C．they buy fire extinguishers |
| D．they use electrical cookers(电饭煲) |
When a fire happens, _________ if you open the hot door.
| A．the fire will grow more quickly |
| B．the electricity will be cut off |
| C．the door will soon be on fire |
| D．the house will fall down |
What are the right steps you should take when your hair or clothes catch fire?
| A．Stop, run, roll | B．Stop, drop, roll |
| C．Run, drop, roll | D．Roll, drop, stop |
The best title for this passage is “__________”.
| A．The Dangers of a Fire |
| B．The Causes of a Fire |
| C．Learn to Use a Fire Extinguisher |
| D．Be Ready for a Fire |
Many animals hide(躲藏) to stay alive. They hide in many ways. Some animals hide in leaves; some animals hide in snow. Usually their colors or shapes(形状) help protect them. It’s hard to see an Arctic bear in snow. Its white fur helps protect it. Chameleons(变色龙) can hide by changing colors. Their skin turns the same color as what is around them. Some chameleons can change colors in five minutes.
Many animals try to look bigger than they are to stay alive. Some animals can make other animals think they are very big. If they look very big, animals that are looking for food will run away. Bears can walk on two legs. They look very, very scary(可怕的). Some animals will run away from them.
Many animals try to stay around other animals. This helps them stay alive. Zebras stay close together so that they can help each other look out for danger. Seeing many stripes(条纹) at once can also confuse(使混乱) animals that want to eat them. Some birds stay in a circle, each toward a different direction. In this way they can also help each other stay alive by looking around for animals that may want to eat one of them.Animals have ways to stay alive. Which animal try to look bigger than they are to stay alive in the passage?
| A．Zebras. | B．Chameleons. | C．Birds. | D．Bears. |
Why do animals hide?
| A．Because they like to play hide-and-seek. |
| B．Because they are shy. |
| C．Because they want to catch other animals. |
| D．Because they want to protect themselves. |
How do Chameleons hide?
| A．They change colors. |
| B．They change shapes. |
| C．They hide in snow. |
| D．They hide in leaves. |
How do zebras hide?
| A．Become good friends. |
| B．Talk to each other. |
| C．Help each other look out for danger. |
| D．Eat and play together. |
Why do animals try to look bigger than they are?
| A．They want other animals to run away from them. |
| B．They want other animals to follow them. |
| C．They want other animals to see them. |
| D．They want other animals to like them |