Tyler opened the door to his house and went inside. His mother was in the kitchen. She felt surprised when she saw his sad face. “Tyler, what happened? Is everything okay?” “Nothing is okay, Mom.” “Is there anything I can do to help?” “That's just the thing, Mom. We can't help. There's nothing we can do.” Tyler kept talking,“Today, the teacher talked about Earth Day and the environment. Earth Day is a day when every person promises to do something to help take care of our world. Mrs. Green said that our world is getting dirtier and that many animals and plants are dying. She wants us to think of something we can do to help and I thought all the way home and there is nothing I can do. I can't stop people from polluting our air and water and I can't save all of the animals. There is not anything that I can do to make a difference.”

    His mother listened and after thinking for a minute said,“Of course you can. There are lots of things you can do. For example, you can walk to school. You can use both sides of your paper to save trees. You can plant a tree every year. You can clean up rubbish from your neighborhood park. Everything you do to help the planet makes a difference. The most important thing to remember is that Earth Day should be every day!” “Oh, I see. Mom, we each can make a difference to the world. Thank you, Mom.”

    The Internet is shaping our lives. We already have online shopping services and mobile payment. However, this is just a start. The world's leading tech companies are planning to build smarter online communities. {#blank#}1{#/blank#} It was held in Wuzhen, Zhejiang last year. The development of artificial intelligence(AI,人工智能) was a hot topic at the conference(会议). If a machine can learn and solve problems as humans do, it can be called AI.

    The company Alibaba uses AI technology in its unmanned supermarket in Wuzhen. There is no salesperson in the supermarket, just a tablet on a desk that says "please smile". {#blank#}2{#/blank#} The bigger your smile is, the more discounts(折扣) you will get. Payment is done automatically(自动地) through your Alipay(支付宝)account. When you first enter the supermarket, the supermarket's AI recognizes your face and your account.

    There is also AI that can read lips. {#blank#}3{#/blank#} It recognizes your mouth, s movements and turns them into voices or text messages. This could be very useful when you are trying to talk to someone on your phone in a noisy place. Police could also use the technology to help them find criminal suspects by lip﹣reading recordings from video cameras.

    {#blank#}4{#/blank#} Microsoft's chatbot Xiaolce can not only provide useful information, but also chat with people like a real friend. Xiaolce has a WeChat account. After following the account, users can start talking with her. {#blank#}5{#/blank#} She keeps improving herself by talking with users.

    These technologies are being put into wider use. We may see a smarter world and better lives in the near future.

A. She knows when to comfort you or tell jokes.

B. They discussed this at the World Internet Conference.

C. Sougou brought its lip﹣reading system to the conference.

D. If you smile, it will give you a special discount for your goods.

E. Another type of AI focuses on understanding human emotions.

Information Card

Chongyang Festival is also called Double Ninth Festival.{#blank#}1{#/blank#} During the festival, Chongyang cake and chrysanthemum （菊花） wine are the traditional food. Climbing mountains and admiring beautiful chrysanthemums are interesting events.

 {#blank#}2{#/blank#} It has two layers（层） with nuts and jujubes （枣） between them. Since cake in Chinese is pronounced "gao" meaning high, people consider climbing a high mountain to be the same as eating cake. They also hope that they can make progress in the following days after eating the cake. {#blank#}3{#/blank#}

Drinking chrysanthemum wine is a necessary part of the festival. Chrysanthemums have the function of an antitoxin（抗毒素） and can drive the evil（邪恶） away. {#blank#}4{#/blank#}

It is said that by climbing to a high mountain diseases can be prevented. Many well-known poems were created to describe the scene and feeling of mountain climbing. Now, family relatives or good friends gather to climb mountains to enjoy the beautiful scenery and share happiness of the holiday with each other. {#blank#}5{#/blank#}

This is Mike's room.  You can see a desk and a bed in the room. On the desk, there is a schoolbag and three books. One is a Chinese book，and the other two（另外两本）are English books. There is a clock on the desk，too. You can see a baseball under the desk.  On the bed，there is a box. What's in the box？ Oh, it's a new computer game. It's the present（礼物） for Mike.  It is Mike's birthday today.

Now most people like to keep pets in their houses. They think pets are their best friends. Do you know how to take care of your pet in summer? Here are some ideas for you. 

Never leave a pet alone in your car

In summer, the air in your car is too hot and it can't move quickly. If you let a pet stay in your car for long, it will lose its life because there's little oxygen (氧气) in the car. 

Don't keep cool all the time

If a pet always stays in a cool room, it'll get sick. You should make an exercise plan and walk it in the morning or evening. But remember not to take it out on a hot afternoon suddenly. 

Go to a pet hospital quickly

When your pet is ill, you should take it to a pet hospital at once. You must look after it well till it feels better. 

It isn't difficult to keep your pet healthy and happy. Treat (对待) it well and you can get a lot of fun from it.