Don't throw away your old phones. You are actually throwing away real gold! Smartphones have many kinds of useful metals. People can recycle them to make new electronics.

    But many people may not knowthis. In Australia alone there are more than 25 million unused mobile phones lying around, The Sydney Morning Herald reported. The gold in these phones can add up to a value of more than $80 million. There are about 2 billion smartphone users around the world, who change their phone once every 11 months on average. So in China, eighty million old phones come along every year.

    However, it's not easy to get the useful things out of the phones. Smartphones have not only useful things but also harmful materials. Guiyu, a small town in Shantou, Guangdong, is one of the world's biggest dumping grounds for electronic waste, Reuters reported. Many recycling centers in Guiyu simply break the old electronics by hand and don't think about the pollution it causes. It's reported that 81 percent of children in Guiyu are harmed by lead poisoning(铅中毒).

    Veena Sahajwalla, a professor at Australia's University of New South Wales, has made a mini factory. It makes smartphone recycling cleaner and easier. The mini factory is very small and easy to move around. It breaks the phones and automatically(自动地)removes the phone's useful things. That way, humans do not get poisoned.

    Well, have you ever wondered what happens to the old phone after it's no longer yours? A part of your old smartphone could soon be proudly worn around the neck of one of the world's top athletes. Organizers of the 2020 Tokyo Olympics say that medals for the event will be made from recycled phones. They will also be made out of people's thoughts for avoiding waste. They think there is an important message in this for the future.

Damon tossed(扔) the tennis ball high in the air and watched. Prince ran and caught it in his mouth.

"Good boy, Prince!" Damon said.

Prince dropped the ball at Damon's feet just as a bark came from the next door. Damon looked up to see a little puppy(幼犬) run out of the house.

"Come on, Prince," Damon said. "Scott got a new puppy. Let's go to say hi."

Damon ran over to Scott. "Hey," Damon said.

Damon bent down and laughed, "What's his name?"

"Duke. My dad brought him home for me last night."

"Hi, Duke," Damon said.

Prince barked and nudged the tennis ball towards Damon.

"Not now," Damon said. "I'm playing with Duke."

Duke tried to pick up the tennis ball, but his mouth was too small.

"Sorry, little guy. You need to grow a little before you can play with the ball," Damon said.

"Hey," Scott said, "show Duke how well Prince can catch the ball."

Damon wanted to keep playing with Duke. But Scott said to him, "Come on, show him."

Damon got up. He tossed the ball high in the air, and Prince jumped up to catch it.

"Wow!" Scott said. "I can't wait for Duke to be big enough to do that."

"But the puppy is so cute and fun," Damon said.

"Yeah, but Duke is too little to play with a ball. Prince is like having a friend around all the time," Scott said.

Damon looked at Prince and smiled. He was happy to have a dog who was also a friend.

My name is Nancy. I'm twelve years old. I'm from China. I am a middle school student. I'm in Class Three. I like green and blue. This is my new friend. Her name is Wendy. She is thirteen years old. She is from England. We are friends, but we are in different classes. Wendy is in Class Four. She likes red and yellow. She is a good student. All the students and teachers in her class like her. Wendy likes swimming, and she often swims after school. I can't swim. I like basketball and football. I often play basketball with my sister in the afternoon. 

We like animals very much. I have a dog, and she has a cat. Where are we now? Oh, we are in the park. We are playing with our dog and cat. 

难度系数：★★★

Script Murder (剧本杀), also known as the mystery of murder, is gaining popularity among young people. A guest in the party secretly plays the role of the murderer without the knowledge of others while other guests, as players, need to find out the murderer through investigating (调查) and reasoning. In recent years, this game has gradually become a top choice for parties in China. 

There are two ways to play Script Murder, that is, online and offline. Most of the scripts provided by online apps are free; only a few high-quality scripts need to be paid. Players play role-playing games in a network "room" while offline stores usually set up scenes exactly the same as script settings. Players live in a "room", performing stories through language, expression, conversation, body movements and so on. This game often takes about 4 to 6 hours in total. 

In fact, murder-inspired board games, card games and party games have been around at least since the so-called golden age of British crime fiction in the 1920s and 1930s. The enduring popularity of these games presents a mystery of its own: What drives people to spend an evening investigating fake cases and hunting for "murderers"? 

One simple explanation might be curiosity (好奇心). When he's playing Script Murder in particular costumes, one feels like he's in that world. But that is not the full story. Instead, murder games follow a surprisingly complex set of psychological (心理的) rules, which can be educational and help people develop important thinking and acting skills. 

"People are considering the games as a way to simulate threatening plots (模拟威胁情节) and then play around with how they would react to it." Coltan Scrivner, a behavioral scientist, says, "After all, real-life violent (暴力的) crime is every person's worst nightmare."

Clothes in the following three shops are on sale. Let's have a look!

Hello, I'm Susan. This is my schoolbag. {#blank#}1{#/blank#}. They're my favorite colors. There are many things in it. Look! {#blank#}2{#/blank#}. What color is the pencil box? It's yellow. {#blank#}3{#/blank#}. The pen and the ruler are blue. {#blank#}4{#/blank#}. The CD is white. It's David's CD. The jacket is black. It's my jacket. {#blank#}5{#/blank#}. What color is it? It's blue and red.