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    “I will think of it.” It is easy to say this, but do you know what great things have come from thinking?

    Sir Isaac Newton was sitting in his garden when he saw an apple fall from a tree. He began to think and tried to find out why the apple fell. Then he discovered how the sun, moon, and stars are kept in their places.

    A boy named James Watt sat quietly by the fire, watching the lid of the kettle move up and down. He wanted to find out why the steam in the kettle moved the lid. From that time he went on thinking and thinking. And when he became a man, he improved the steam engine (蒸汽机) so much that it could easily do the work of many horses.

     James Ferguson was a poor boy. Once, seeing the inside of a watch, he wondered. “Why should I not make a watch?” But how could he get the materials to make the mainspring (钟表的主发条)? He soon found he could make it with whalebone (鲸骨). He then made a wooden clock which kept good time. His motto (座右铭) was “I will think of it.” And he made his thoughts useful to himself and the world. 

    Boys and girls, when you have a difficult lesson to learn, don't lose heart, and don't ask someone for help before helping yourselves. Think, and by thinking you will learn how to think to some purpose.

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    Mike Myers is a teacher at Chauncey Rose High School in Terre Haute, Indiana. Last year, he taught his students about the world's rain forests. They learned that rain forests are important because the plants and animals of the rain forest give us food, wood, and medicine.

    Destruction of the world's rain forests is a serious problem. Unluckily, rain forests are disappearing at a rate of 80 acres per minute! As part of a class project, Myers' students bought three acres of rain forest in Central America. They paid $25 per acre. The students hope that the land they bought will be protected and not destroyed. The students became so interested in rain forests that they decided to get a closer look at a real rain forest.

    So last June, Myers and four of his students took a boat ride down a river. They saw alligators and crocodiles. In the middle of the week, a guide took Myers and his students into the rain forest. "The monkeys were not happy that we were in their forest. They broke small branches off the trees and threw them at us," one of the students said. "It was a great learning experience for all of us," said Myers.

    Each student chose something specific about Costa Rica to study involving the plants, animals, food, and culture. During the last few days the group had time to do fun activities. They went whitewater rafting and horseback riding, and visited Costa Rica's active volcano.

    Myers hopes to make the trip every year with a different group of kids.

    Alice's class planned to make a class newspaper. All the students wrote stories, articles or poems for it. One day Alice said to the teacher, “Most newspapers have advertisements. Can we put some in our newspaper?”

    The teacher agreed at once. She made Alice the advertising manager, and then Alice asked her classmates to advertise in the newspaper. Here are some of the ads Alice received.

    When he was nine years old, American boy Milo Cress had a question: How many plastic straws(吸管) do Americans use every day?

    He quickly learned there wasn't a simple answer. The boy tried to work it out himself. Through lots of research, Cress found out that Americans use about 500 million straws every day. In hopes of reducing plastic waste, he founded the Be Straw Free project in 2011.

    Cress started the project in his hometown – Burlington, Vermont. He asked a local restaurant to stop offering straws with every drink order. It was a simple change. However, it would save money. And by doing that, the restaurant would cut down on its straw use by 50 percent.

    For the years that followed, Cress tried to spread his project across the United States. More and more restaurants agreed to join. They stop providing the customer with a straw unless he or she asks for one. Last April, Seattle became the first American city to completely ban (禁止) plastic straws.

    Plastic pollution has been one of the most serious problems today. According to scientists, more than eight million tons of plastic end up in the ocean each year. Plastic straws are especially terrible. They make it easy for people to get comfortable with single-use plastics.

    After his project became popular, Cress took his findings on the road. He has since spoken to tens of thousands of students around the world. He wants to encourage more people to say no to plastic straws.

    "Focusing(聚焦) on straws is one simple step we all could take," Cress says. "And it makes me feel that I, as a kid, could make a difference, too."

    Jack King

    I work in a TV station from Monday to Friday. My house is near a beautiful park and is about thirty kilometers from my office. I usually go to work by train. I usually get up at 6:30 a. m. and take the train at 7:00 a. m. It usually takes me about thirty minutes to get to my office. The train is quick and cheap. I am never late for work.

    Peter Green

    I am a student, My house is near a beautiful lake. My school is across from the lake. I can walk to school across a bridge. It takes me about thirty minutes. But I often go to school by boat, because it is more fun. It takes me about twenty minutes.

    Molly Smith

    I'm a waitress I work in a restaurant from Monday to Saturday. I often go to work by bus, It is about five kilometers from my house to the restaurant. It takes me twenty five minutes to go to work. Sometimes I am late for work because the traffic is very busy.

Rose is a good girl. She is twelve years old. She is my 1 . We are in the same class. 2 are in Class Four, Grade Seven. She is from America. Her 3 number is 0378 9966 2238. I 4 from Henan. We don't look the same. She has two big eyes, but my 5 are small. She has short blond(金色的) hair, 6 my hair is long and black. She is tall but I am short. Her favourite 7 is blue. This blue schoolbag is hers. That 8 toy is hers, too. Her English is very good. She always 9 me with it. Her dad is an English teacher. We like his English 10 very much. Her mum is a Chinese teacher. They are working in the same 11 . Rose has 12 sisters. They are Judy and Jenny. They 13 the same, because they are twins. They are junior high school students, too. They are in 14 classes. Judy is in Class Eight. Jenny is in Class Nine. I like 15 with them very much. We often have fun together.