What is a museum? A museum is a good place to keep old and beautiful things. A museum may be a place to learn about science and a place to find out about art or people or animals.

    What is inside a museum? Some museums have old cars and airplanes. Many museums have pictures and statues(雕塑). Others have rocks and old bones (骨头). One museum even has a real old street inside. It has shops and people's statues doing business. It looks so real that one might feel that he was back to the old time.

    Many cities have museums. Some very small towns have museums, too. Indianapolis has a children's museum. Children do not have to pay (付款) to get in. Children often go to the museum. They like to look at the dinosaur (恐龙)bones. They see a white bear ten feet tall.

    On Saturdays, Indianapolis children can hear talks about animals and trees. They see movies. They take hikes. They even learn to make things there.

    Artificial intelligence(AI)(人工智能)is the ability of a computer program or a machine. The computer or the machine with AI can think and learn. It is also a field of study that tries to make computers "smart". John McCarthy, a scientist, came up with(提出)the name "artificial intelligence" over 60 years ago. Many things such as learning and problem solving can be done by computers, though not in the same way as people do.

    An unusual goal of AI research is to create computer programs. They can learn, solve problems, and think logically(逻辑地). At present, Al can successfully understanding human speech, recognizie (识别)human faces, operate self-driving cars and compete in some game systems like playing Chess. However, Some people also consider(认为）AI a danger to humans if it develops too quickly. A famous British scientist also was not for this kind of technology.

    Math is the basic language of AI. If students are good at math, they will be more likely to become successful AI designers(设计者)in the future. We need not only bright students, but also average(普通的)students. As for(对于)average students ，if they get enough math skills, they can also become successful AI designers. Besides, a good knowledge of computer science is also necessary for AI designing.

    Scientists hope to create creative(有创造力)and emotional (有感情的)AI. The AI can possibly understand human feelings or create art. Many ways and tools have been tried to discover this wide and exciting field.

Do you play sports all the time? Do you want to be healthy? 

Well, you can take a quick walk. It is easy. You only walk — left (左), right, left, right. See? It's so easy. It takes not very much. {#blank#}1{#/blank#} All you need is a pair of good shoes.

It is fun. You can go with a friend. Walk and talk. You can also do some interesting things. {#blank#}2{#/blank#} It is good for your health. {#blank#}3{#/blank#}. 25 minutes of quick walk a day can make you feel (感觉) good.

{#blank#}4{#/blank#} You may know that walking 10,000 steps (步) a day is good for health. But is that true? The answer is "no". Not everyone needs to do so. {#blank#}5{#/blank#} But if you can't, walking 7,000 to 8,000 steps a day is OK, too.

"I feel a bit 'emo'." Do you often1 people say this?" Emo" is short for" emotional (情绪化的)". Everyone has2 feelings from time to time. You may not3 to eat, speak, learn, or play when you fail the test. You may feel unlucky when you4 the key and so on. Hey, don't forget that you are the master (主人) of your emotions.5 to deal with (处理) bad emotions? Here are some ways for6 .

7 , taking a deep breath(呼吸). Keep doing it and you can calm down(冷静下来). Next, just move. Do some exercises, such as jumping and hiking. Hugging is a nice try, too.8 your parents, pets or your teddy bear. It may make you feel good.9 is another good way to relax . You can talk to others.

Do you know any other good10 ?

Today there are all kinds of problems in the world. Population {#blank#}1{#/blank#}(增长) is the biggest one in many countries. Here are some notes from a {#blank#}2{#/blank#}(报告) called "Our growing population". 

More than 250 {#blank#}3{#/blank#}(婴儿) are born every {#blank#}4{#/blank#}(分钟) in the world. That makes over 131. 4 million {#blank#}5{#/blank#}(出生) a year. A large population {#blank#}6{#/blank#}(造成) a lot of problems, such as too much traffic and noise. China has a large population. It is about 1.41 {#blank#}7{#/blank#}(十亿). That is almost one {#blank#}8{#/blank#}(第五) of the world's population. 

Several countries in Europe already have a negative growth rate (负增长率). There may be fewer and fewer {#blank#}9{#/blank#}(工人) in these countries in the future. And the people who are working have to {#blank#}10{#/blank#}(喂养) the growing number of the old. 

When I was in primary school, I often thought about what my junior high school life would be {#blank#}1{#/blank#}. I am a junior high school student now. I find something different. In most junior high schools, the {#blank#}2{#/blank#}(one) day is usually on 1st September. Class often {#blank#}3{#/blank#}(start) at 7:45 in the morning. 

I go to school from Mondays to Fridays {#blank#}4{#/blank#} I have seven lessons every day. English is my favourite. {#blank#}5{#/blank#}(learn) English well is important for me, because I want to be {#blank#}6{#/blank#} English teacher in the future. I started {#blank#}7{#/blank#}(work) hard from the first English lesson. In that lesson, our English teacher Ms Chen wrote some {#blank#}8{#/blank#}(sentence) on the blackboard. Then she asked {#blank#}9{#/blank#}(we) to answer questions. I was the first to put up my hand, but my answer was not right. I felt sad. But Ms Chen said it was OK {#blank#}10{#/blank#}(make) mistakes sometimes. She taught me to learn from them, and then I could do better next time.