All networks like 3G and 4G will be things of the past, because 5G will be reachable in the near future. So, what’s so special about a 5G future? First of all, its download speed can be as fast as 20GB/s, which is 100 to 200 times that of 4G. But what’s more impressive is 5G’s low delay rate. Now, 4G takes an average of 200 milliseconds(毫秒) to send and receive information. But 5G will get it down to 1 millisecond.
5G is a great breakthrough. It’s going to change the way equipment connects to the Internet, and more importantly, to each other. And self-driving cars may be one of the biggest breakthroughs to come out of 5G. Human reaction time is 200 milliseconds, yet we still have accidents every day. The self-driving car under a 5G network could react and communicate its reaction to hundreds of cars around it, all within 1 millisecond. It’ll play a great role in preventing car accidents and ending traffic jams completely.
5G can benefit us in many other ways.Operations could be performed by robots controlled by experts from the other side of the world. Therefore, more lives will be saved in time. Factories can be staffed by robots that can communicate their tasks to each other, and they can do more work efficiently over a 5G network. Imagine a group of drones(无人机) flying over a field of crops, using sensors(传感器) on the ground to sort, pick, feed, and water plants all on their own. Then farmers won’t have to work so hard anymore.
However, 5G is not perfect. One major disadvantage has to do with why it’s so fast. 5G uses the millimeter waves, while 4G uses the 15 to 40 centimeter-long waves. And shorter waves go fast but not very far.On 4G networks, the signal can go 10 kilometers. But the 5G signal can go at most 300 meters, and it can’t even go through walls or rain. So, what does that mean? Having such a short signal distance means we need to build a lot of transmitters(信号发射塔) in the future.
1.How does the author show us 5G’s advantages in Paragraph 1?
A.By giving examples of the uses of 5G.
B.By making comparisons between 4G and 5G.
C.By explaining the scientific principles of 5G.
D.By analyzing 5G’s development from 4G.
2.According to the author, the self-driving cars will ________.
A.cause more car accidents
B.slow down 5G’s development
C.run without being connected to the Internet
D.have a much faster reaction speed than humans
3.What does the underlined part “be staffed by robots” in Paragraph 3 mean?
A.Be built by robots.
B.Have robots as workers.
C.Offer employees home robots.
D.Produce more medical robots.
4.What does the last paragraph mainly talk about?
A.The main weakness of 5G networks.
B.How to make 4G networks more perfect.
C.The types of long waves and short waves.
D.How to improve the signal of mobile phones.
Animals, including insects, do not have a language like ours. They do not talk to each other in words and sentences. But if we watch them, we can see that they do have ways of communicating with each other.
Can you see the rabbit’s tail? When rabbits see this white tail moving up and down, they run too. They know that there is danger. The rabbit has told them something without making a sound. It has given them a signal(信号).
Many other animals use this kind of language. When a cobra(眼镜蛇) is angry, it raises its hood(颈部皮褶) and makes itself look fierce. This warns other animals. When a bee has found some food, it goes back to its home. It cannot tell the other bees where the food is by speaking to them, but it does a little dance in the air. This tells the bees where the food is.
Some animals say things by making sounds. A dog barks, for example, when a stranger comes near. A cat purrs(咕噜叫) when pleased. Some birds make several different sounds, each with its own meaning. Sometimes we human beings speak in the same way. We make sounds like “Oh” or “Ah!” when we are frightened or pleased or when we drop something on our toes.
But we have something that no animals have-a large number of words which have the meanings of things, actions, feelings of ideas. We are able to give each other all kinds of different information in words and sentences, which no other animals can do. No other animals have so wonderful a language as we have.
1.Which of the following statements is TRUE according to the passage?
A.Animals do have a language like that of human beings.
B.Bees communicate with each other by dancing.
C.Some animals can use words.
D.Animals are brave.
2.A rabbit uses its tail to ________.
A.warn other rabbits of danger
B.tell other rabbits where the food is
C.make itself look fierce
D.help it to run fast
3.Several different sounds can be made by a ________.
A.rabbit B.bee
C.bird D.cat
In Paris, the Seine River plays many roles in the city. It separates the Right Bank from the Left Bank, acting as a dividing line in Paris. It provides riverboats as the means of transportation and the opportunity for romantic walks. In addition, lots of Paris’ tourist attractions are located on both sides of the river, including the Eiffel Tower, the Louvre, and so on.
The Basics
One of the best ways to see the Seine is to walk along it. You can also walk across the river on bridges to see some of the most well-known architecture(建筑) in France. Besides, a Seine River cruise (乘船游览) allows you to rest your legs and admire the same sights. If you book a lunch or dinner cruise, you can enjoy your sightseeing as well as a French meal.
Things to Know Before You Go
While you are running through Paris’ main tourist areas, the Seine River is hard to miss. You won’t have to go far to find it. More than 30 bridges cross the Seine within the city limits. You ought to wear comfortable shoes for walking along the banks and bridges. You had better be prepared for crowds on popular bridges like Pont des Arts.
When to Get There
For a peaceful walk, head to the river in the early morning hours before most of the crowds arrive. Or go for an after-dinner walk to take in the reflections (倒影) of the City of Light on the water.
Exploring Canal Saint-Martin
In northeast Paris, the Canal Saint-Martin is connected to the Seine River. It is home to smaller waterways. Instead of the Seine’s busy traffic and noisy tourists, there are some quiet footbridges and friendly locals here. You can walk slowly along the tree-shaded paths and enjoy a more laid-back atmosphere.
1.If you take a boat trip on the Seine,you can ________?
A.get a book about the Seine
B.take part in the boat race in Paris
C.have a free French meal with the captain
D.appreciate the famous buildings comfortably
2.What should you prepare for walking along the Seine according to the author?
A.A guidebook of Paris.
B.A ticket to the Pont des Arts.
C.A pair of shoes suitable for walking.
D.A great deal of knowledge about bridges.
3.What’s the feature of the Canal Saint-Martin compared to the Seine?
A.It’s noisier here.
B.It’s easier to find.
C.It has fewer visitors.
D.It has more beautiful trees.
现在网络上有许多关于英语学习的app，关于在平时的英语学习中是否应该使用这些 app，最近你在班级内进行了一次调查，发现同学们的看法各不相同。请根据表格中内容写一篇英语短文。
70%的学生支持 | 1. 能帮助扩大词汇量，提高听力： 2. 随时随地查阅资料，开拓学生的视野。 |
30%的学生反对 | 1. 产生依赖心理，不能独立思考； 2. 可能含有错误甚至有害信息。 |
你的观点 | 1. …… 2. ……（至少两点） |
注意：（1）文章开头已给出，不计入总词数；
（2）字数150左右；
（3）参考词汇：扩大词汇expand vocabulary
Nowadays, there are various English learning apps on the Internet. Recently, I've made survey in my class about whether students should make use of these apps in their study.
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根据首字母或中文提示写出单词的正确形式，使句子意思连贯。每空一词。
1.His parents waited with a__________________ outside the operation room when his grandpa was receiving an operation.
2.He is still h__________________ about whether to study abroad after he graduates from the high school or to study in a college at home.
3.When you exercise, your body produces some chemicals that make you feel peaceful and relaxed and increase your ability to c__________________ while studying
4.The small coastal village has changed out of r__________________ since I was last here more than 20 years ago.
5.When he stayed with his friends and relatives during the Spring Festival, he felt love and kindness s__________________ him.
6.Our country is becoming stronger with the development of __________________ (先进的) Science and technology.
7.All the patients and doctors present __________________ (恐慌) when the murderer killed the doctor Yang Wen.
8.After his brother's death, he felt extremely lonely, and then he found __________________ (宽慰) in food, causing him to become overweight soon.
9.People in the small village live with nature __________________ (和谐地), far away from the noise outside.
10.The meaning of life is not simply to exist, to __________________ (存活), but to move ahead, to go up, to achieve, and to conquer.
语法填空
Gandhi, 1. Indian national hero, was known as the father of the Indian nation. He 2. (look) up to and beloved by the Indians.
He was born in India in 1869. 3. (follow) the local custom, he got married at the age of 13. In 1888, he set sail 4. England, where he studied law for three years and became a lawyer. On his return to India, he was sent to South Africa to work on a law case. In South Africa, 5. surprised him most was that the racial discrimination there was serious, so he formed an organization and started a magazine to fight for equal rights. Gandhi returned to India in 1915, 6. India was controlled by the British. He 7. (lead) the Indians to fight for an end to the British rule. In a political movement many Indians, Gandhi 8. (include), were put in prison. However, the struggles never stopped. The British government had to give in and Indian won its 9. (depend) in 1947. 10. (fortune), Gandhi was shot by a person who opposed his views and died on January 30th, 1948.
