1 . Do you know that the falcon (猎鹰) is one of the fastest animals in the world? It can fly at a speed of about 200 miles an hour. You might think a bird that could fly so fast would be safe from most types of danger. Unluckily, that is not true. By the 1970s, they had already been endangered (濒临灭绝). What was causing the number of falcons to drop (下降) so fast?

In America, a pesticide (杀虫剂) called DDT was harmful to the falcon eggs. Luckily, DDT is no longer used. The number of falcons is large now.

One unusual thing about falcons is that they like to make their nests (巢) in high places. In fact, they often nest on mountaintops and on the sides of cliffs (悬崖). Falcons have also got used to life in cities. They nest on tall buildings and bridges in cities. The height of these nests is from 50 to 200 feet in the air.

They also like to return to the same nesting place every year. Both the mother and father falcons help to keep the babies. The mother stays more time in the nest. The father looks for food and brings it back for her and the babies.

Many people all around the country work very hard to help falcons live to adulthood (成年). There are even video cameras (摄像头) fixed up (安装) in many places. This way, people can make sure the birds and their eggs stay protected (保护). Falcons are lucky to have so many people who keep an eye on them.

2 . Here are some lost things. Please help to find the owners.

4 . We know music is very important in our daily life. Do you notice music playing at any of those places when you go somewhere? Today most stores, stations, restaurants and other places play music. You might even hear music in an office or on a farm.

Scientists believe that music influences（影响）the way people behave（表现）. They think that the sound of western classical（古典的）makes people feel richer. When a restaurant plays classical music, people spend more money on food and drinks. When the restaurant plays modern music, people spend less money. Without music, people spend even less.

Scientists also believe that loud, fast music makes people eat faster. Some restaurants play fast music during their busy hours. This makes people eat faster and leave quickly. Restaurants can make more money in this way.

Some scientists think that music makes you think and learn better. They say that music helps students to be more active. It is true that people learn better when they are relaxed. And listening to music can help you relax.

The next time you hear music somewhere, be careful. It might influence the way you do things.

My name is Alan. I have some friends. Here are my friends and their school things(物品). Look! This is Gina. She has a new book. It is blue. This is Mike and this is his dictionary. It is red. He always uses(总是使用) it. He’s a good student. This girl is Helen. ①那把钥匙是她的吗？ Yes, it is. It’s a white key. And that’s Nick. He lost his pen. It is black. ②Can you help him find it? If you find it, please call him at 266-7896.

6 . Halloween is just around the corner! People in the West celebrate it on Oct 31 every year. Children usually go trick-or-treating （不给糖就捣蛋）; they knock on their neighbors’ doors and ask for candy. But because of COVID-19, many cities have advised people not to go trick-or-treating this year. As health experts said, the virus spreads more easily when people get close to each other.

But this will not stop Halloween fans from keeping the tradition going. For example, Elizabeth Lusty from London came up with an idea for her two children. She and her neighbors will put boxes of candy in their front yards. Then they’ll plan a safe way so that children can take the candy without coming into contact with others.

Andrew Beattie from the US also got creative. He and his 6-year-old daughter made a contact-free candy chute （滑道）. It goes from the family’s front door to the sidewalk. They can send candy down the chute to trick-or-treaters outside. The idea became popular online and many people are doing the same.

“This is something that the kids will enjoy and not think of it as I’m doing this to prevent （预防） illness, ” Beattie told CNN. “They’re doing it to have a good time, and we need that now.”

Hello, boys and girls! My name’s Helen Green. Here is a photo of my family. My parents, my sister and I are in it. My father’s name is Paul. He’s a teacher in a middle school. My mother’s name is Anna. She’s a teacher in a middle school, too. My sister’s name is Cindy. She is a middle school student and her school ID card number is 8654327. What about the girl? Who is she? Oh, it’s me! It’s a nice photo, isn’t it?

Hi, friends! I’m Tom White. I’m an English boy. Now I’m in China. Here are two photos of my family. My mother Sally and my sister Mary are in the first photo. In the next photo, you can see my father David, my dog Dingding and me. And some books are in the photo, too. The books are my father’s.

We all know that foods will easily go bad if they get too warm. So we usually put them into our fridges to keep cool in hot weather. But can you make it without fridges?

In 1995, Abba, a teacher from Nigeria, found a cool way. His invention was called Pot-in-Pot Cooling System (系统).

It uses two clay pots (陶罐). There is a smaller pot inside a larger one. The space between the two pots is filled with wet sand. Fruit, vegetables or drinks can be put into the smaller pot. A wet cloth covers all of them. Some foods can be kept fresh for several weeks in it.

Abba built five thousand Pot-in-Pot Cooling Systems for the villagers in his home town. Then people all over the country began using the invention. Soon it became popular with farmers in other African countries.

In 2000, Abba got a prize—the Rolex Award. If you are trying to do something to improve human life, you may have the chance to get this prize.

9 . Welcome to Class 4, Grade 7. This is our classroom. There are forty-five desks and chairs in the classroom. Twenty-three of them are for boys and twenty-one of them are for girls. There is a desk and a chair in the front of the classroom. They are for teachers. There is a big blackboard on the front wall and a blackboard on the back (后面) wall. There are two maps on the wall. One is a map of China and the other is a map of the world. There are some photos about our school life on the wall, too. There are some flowers by the windows. What a beautiful classroom it is! We all like it.

10 . Practicing yoga is a helpful, popular way keep fit. It has many followers around the world. There are many kinds of yoga. You may have heard of “hot yoga” before. Now, in India, a new kind of yoga, water yoga, is becoming more and more popular among the local people.

In the city of Agra, people practice yoga in water. It is more difficult to practice yoga in water than on land. But practicing yoga in water can be good for your flexibility.

Harish Chaturvedi, a lawyer, teaches people water yoga: water yoga for free-even the people can learn from him. “Water yoga can become more popular than other kind of yoga, because the body does not get tired so quickly,” he said. “Everybody can learn to swim, but if they learn yoga at the same time, they will never feel tired. “The level of oxygen is very high in water, and you will not have any breathing problem,” he added.

Harish believes that water yoga really helps people to keep away from illness. He mainly trains children. He has classes at the swimming pool of a local sports room regularly. Many children are interested in it and come to learn from him.

“Harish is very good at performing yoga in water,” said Sudhir Narayan, a water yoga student. “He is teaching children free of cost and that is a very good thing.