The population of the Earth is growing faster. It is important that we look after the Earth. We need it!The Ea...

题型：阅读选择题类：模拟题难易度：普通

The population of the Earth is growing faster. It is important that we look after the Earth. We need it!
The Earth gives us a lot of things. We also give the Earth a lot, but some of the things are not good.
In nature, when something dies, other animals and plants get food from it. Every animal or plant gives food for other animals or plants. However, animals can't get food from many of the things that we ‘give' the Earth. Animals and plants can't eat metal, plastic and glass. These things will stay in the ground for many, many years.

Some rubbish is very dangerous for plants and animals. In some places, many animals live together. One animal makes food for many more animals. If we put rubbish and chemicals in the water, the plankton(浮游生物) can die. If there isn't any plankton, many animals have nothing to eat.
So what can we do? Don't leave any rubbish in the countryside! Don't make so much rubbish!

（1）、The Earth gives us ___________.

A、food B、rubbish C、chemicals D、pollution

（2）、When something dies in nature, _________.

A、water and grass are polluted B、plastic and wood become food C、other animals and plants get food D、metal and glass stay in the ground

（3）、We must _______ to look after the Earth.

A、put metal in the ground B、use more wood C、keep frogs in the water D、make less rubbish

举一反三

    Three kids have been learning chemistry for only a few months. But they have already begun to challenge (挑战) a world famous scientist!
Li Weichi, Huang Runling, and Xiao Yan are from Zhongshan Huaqiao Middle School in Guangdong. They have just found a red cabbage that could be a new kind of acid-base indicator (酸碱指示剂). They want it to take the place of litmus (石蕊) paper.
    "We've learnt to think of and ask questions about life by ourselves," said Li, "We work well with each other."
    British scientist Robert Boyle discovered the use of litmus paper over 300 years ago. Now it is used widely in experiments all over the world.
But when the kids did some experiments in class last winter, they saw that the litmus paper didn't turn very blue with base matter. It's hard to get a clear result.
    Will there be a better indicator than litmus paper? The three kids decided to try and find out!
How? They went to collect over 40 plants in parks, gardens and markets. Then they ground (研磨) leaves, flowers and stems (茎) to get the pigments (色素) from them.
    The kids mixed pigments with acid and base. They spent months watching carefully to see which paper showed the best colour change. They decided it was the litmus paper!
    "It's our first scientific journey, Huang said, "But it makes me want to try harder."

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How green are you ? Do you know how to be green?

We all need a healthy environment, but we produce waste every day and it does harm to our environment. Though we are young, we can still do something to help. In fact, even the simplest everyday activities can make a real difference to the environment. Here are some ideas for you.

Reduce

Reduce means “use less”. Don't waste things. This saves money and reduces pollution and waste going into the environment. Before we buy something new, think whether it is really necessary—or maybe the old one will be just as good! When we do buy things, choose local products if possible, and try not to buy too many things from abroad.

Reuse

Reuse means “use again”. Use things for as long as possible. When we buy things, make sure that they last a long time. We should look after them so that they will last, and we should repair them if we can instead of throwing them away and buying new ones. Don't use a paper cup or a paper bag. It's better to use a china cup and a lunch box because you can use them again.

Recycle

Recycle means “change things into something else”. Though it takes energy(精力) to change something into something else, it's better than throwing things away or burning them. Find out what can be recycled in your neighborhood and take part in recycling programmes. We should also buy products made from recycled materials, such as recycled paper, to help save trees.

So please remember these three words： reduce, reuse and recycle.

阅读理解

In recent years, there have been many breakthroughs in the AI (人工智能) field. Here, let us see four of the most interesting developments in AI in 2017.

Magic Radio

Want a friend that you can talk to anytime? Then you might like Magic Radio from Microsoft. Magic Radio features a cool cartoon figure. You can talk to it about anything. There is also an app for Magic Radio. With it, you can decorate the cartoon figure and even send it a gift online. Parents can also use the app to talk to their children. Magic Radio also records your life and analyzes(分析) your behavior. This way, it is easy for parents to know what you're doing when they're not around.

Sophia, Robot

Sophia is the first robot in the world to get citizenship(公民身份) in Saudi Arabia. In 2015, a US company built Sophia. She looks and acts like a human woman. She can talk to people naturally. She even has her own body language. For example, she may blink her eyes when she is talking about something funny. She also has the ability to learn from people, books and the Internet. Sophia was designed to have her values. "Don't worry, if you're nice to me, I'll be nice to you."

Samsung's Bixby

Like the voice recognition (识别) system, Siri on iPhones, Samsung has a similar system called Bixby. Experts said that it is smarter than any other similar system. If you once asked it to complete a certain task, it will remember that task the next time you talk to it. For example, you might like to listen to certain music while you're baking a cake. Next time when you tell Bixby " I want to make a cake", it will show you how to make a cake and play music for you automatically.

AlphaGo Zero

AlphaGo is an AI program that plays the board game GO(). Google Company has created a new version of the AI program called AlphaGo Zero. The new AI program is unique in the way it learned to play Go. AlphaGo Zero mastered Go in just two days without any human knowledge of the game. On the third day, it beat AlphaGo by 100 games to zero, becoming the best Go player on the planet.

阅读理解

Cars make our lives more convenient. But they can also be a problem. For example, fossil fuel(化石燃料) cars mainly cause air pollution.

To improve the environment, many countries are developing electric vehicles(EVs，电动车). Among them, China is' taking a leading role and has created the world's largest EV market.

Last year, over 40 percent of the 753, 000 EVs sold in the world were sold in China, more than twice as large as the number sold in the United States.

"Filling up a fossil fuel car with gas is more expensive than charging an electric car," said Wu Hao, who bought an electric car this year.

However, there are still some problems. It can be hard to find charging piles and the cars can't go far before needing to be recharged.

Some of these problems are being solved. In 2014, China had 31, 000 charging piles. Now China has the world's largest EV charging network, with more than 167，000 charging piles in total.

Developing EVs is one of many efforts that China has made to cut down pressure on its environment after the government promised to stop increases in carbon dioxide emissions by 2030.

"As China goes, so will the world's car industry," the Wall Street Journal said. China has taken a leading role in the world's electric vehicle industry.

完形填空

Do you want to be a TV news reporter? People often ask me 1 I love my job. Well, it's very2. I'm the first to know about important news stories. I3around the world and I talk to people. I find out what is happening4different places. I talk to some important and famous people. I've talked to people in the government, 5 famous sportsmen and sportswoman and film stars. I ask people to tell me about6lives. I want to know how they feel.

A lot of people want to work in TV news, so you have to be energetic and creative. You have to show that you can do it. You must learn how to use a video camera,7 reports, and speak to the camera. What's the best way to learn? Your school or college TV station is a good place to start, but you have to get a job!

Most people8with an unpaid job, so they can learn. The best place to learn is at a small station. There aren't many people, and as a result, you get more9. I had an unpaid job at a small station, and one night, when10was ill, I read the news on air. I did well, and as a result, I got my first paid job!

阅读短文，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整

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The New Year was coming. Grace and Alice were going shopping with their mother. The mother wanted to{#blank#}1{#/blank#} them to a Farmers' Fair (集市),but Grace wanted to go to the supermarket. The mother explained that they{#blank#}2{#/blank#} buy fresh fruit and vegetables there, and could support (支持) local farmers as well. Grace agreed.

The girls were{#blank#}3{#/blank#} when they arrived there. The farmers sold things that they grew{#blank#}4{#/blank#}. Alice found a stall (货摊) with red strawberries ,and she{#blank#}5{#/blank#}, "Where did you get so many good strawberries?" The woman answered, "I grow them on my farm. You can come to visit my farm{#blank#}6{#/blank#} you like." "That will be great!" said Alice. At last, Alice asked her mother to buy{#blank#}7{#/blank#} strawberries. They also bought something else.

At the dinner, the father asked each person to say something{#blank#}8{#/blank#} this day. Alice said, "I want to thank not only the strawberries, but also the{#blank#}9{#/blank#} They needed to work so {#blank#}10{#/blank#}to grow strawberries." Grace then said, "We should thank the food and the people who bring it to us every day." Alice and Grace's parents smiled.

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