The world is in danger. At one time there were 1,300 different plants, trees and flowers in Holland, but now only 860 remain(剩余). The others have been destroyed(破坏) by man. We are changing the earth, the air, the water and everything that grows and lives. We can't live without these things. If we continue doing like this, we will destroy ourselves.

    What will happen in the future? Perhaps it is more important to ask "What must we do now?" The people who will be living in the world of tomorrow are the young of today. A lot of them know that conservation(对自然环境的保护) is necessary. Many are helping to save our world. They plant trees and protect animals in forest. In a small town in the United States, a large group of volunteers cleaned the banks of their rivers. Young people may hear about conservation through a record called No One's Going to Change Our World. It was made by the Beatles, Cliff Richard and other singers. The money from it will help to protect wild animals.

    Tea is the {#blank#}1{#/blank#} popular drink in the world {#blank#}2{#/blank#} water. {#blank#}3{#/blank#} tea comes from the tea plant. People {#blank#}4{#/blank#} leaves from it to make tea. The habit of {#blank#}5{#/blank#} tea has a long history in China. {#blank#}6{#/blank#} an old story , Chinese Emperor Shennong {#blank#}7{#/blank#} tea. Lu Yu, a writer {#blank#}8{#/blank#} the Tang Dynasty, wrote the {#blank#}9{#/blank#} book about tea. There are several types of Chinese tea, such as white tea, {#blank#}10{#/blank#} tea and black tea.

We all have a family name. In China, the family name comes first, but in English-speaking countries, the family name is the last name. Do you know how English people get their family names? And what do the family names mean（意思）? {#blank#}1{#/blank#}

{#blank#}2{#/blank#} A man lives on or near a hill, so his family name may be Hill. In England. people's family names may be Wood or Lake because they live near the wood or the lake. 

Some people's family names come from their jobs. {#blank#}3{#/blank#}

{#blank#}4{#/blank#} Some people's family names are Black or Brown. 

{#blank#}5{#/blank#} When you hear the family name "Jackson", you can know he is the son of Jack. 

Museums are active centers of learning. In a science museum, people can learn about nature and technology as well as physics and chemistry. Visiting museums is a good choice to spend a holiday for people of all ages. But there're some rules when visiting museums. Take an art museum, for example.

Keep quiet. You can talk, but keep the voice down and be polite to those around you. You should turn off your phone or put it on silent. Sounds from your phone may disturb (打扰) others. If a call must be made, you should go outside to make it. 

Ask before taking photos. Some museums welcome visitors to photograph or videotape works of art. However, please be careful with the sign "no photography" which means taking photos is not allowed for that work or exhibition. If you take photos without permission, you will be in trouble. Maybe you will be punished. 

Do not touch works of art! Your touch may not seem like much, but even the slightest (最轻的) touch can damage the surface of a painting, discolor stone, and even rust metal. Keep a safe distance between you and each work of art. This helps to avoid accidental touching.

Never bring food or drinks into the museum. It's no good eating or drinking there. The art in the museum will provide plenty of food for thought as well as a dinner for the eyes!

Running and pushing are not allowed in the museum. Proper museum behavior is necessary to avoid accidentally hitting or damaging works of art.

Remember: ____. If you obey them, you will surely enjoy yourself in the museum.

Mr Black and Mrs Black have a happy family. Here's a photo of their family. The man in a brown jacket is Mr Black. He's a doctor. The woman in a white dress is Mrs Black. She's a teacher. Mr Black and Mrs Black have two kids. The boy in front of Mr Black is their son. His name is Jack. He's twelve years old. He's in a green T-shirt in the photo. The girl next to Jack is his sister, Kate. She's ten years old. She's in a red skirt in the photo. 

Jack and Kate are in the same school, but they're in different grades. Jack is in Grade Seven and Kate is in Grade Five. They're good students at school. They study hard and they like to help their classmates. At home, they like to help parents do housework. Their parents love them very much. They love their parents, too.