阅读理解C There is good and bad news about the number of trees on out planet. The good news is that there are...

题型：阅读选择题类：常考题难易度：普通

广东省深圳市深圳中学2016-2017学年七年级下学期英语期中考试试卷

阅读理解

There is good and bad news about the number of trees on out planet. The good news is that there are seven times more trees for everyone than we thought.

A few years ago, scientists believed that the world bad 400 billion（十亿）trees. However, a new study from Yale University shows that there are around three trillion（万亿）trees. Thatmeans a three followed by 12 zeroes. That means there are about 420 trees for everyone in the world today.

The bad news is that thousands of years ago, the earth had six trillion trees. Humans cut in half the number of trees on the planet. Take Europe for example, it was a large forest thousands of years ago. Now much of it is cities and towns. And another 15 billion trees are lost each year.

Dr. Thomas Crowther is one of the scientists from Yale University. He said the new number of trees from their study would change nothing. " The study only shows we need to do more to protect our forests." He said.

（1）、The passage is about the study of _______ in the world.

A、the kind of trees B、the number of trees C、the kind of animals D、the number of animals

（2）、_______ is one trillion.

A、10,000,000,000,000 B、1,000,000,000,000 C、10,000,000,000 D、1, 000,000,000

（3）、In the past, we thought everyone had about _______ trees.

A、400 B、12 C、60 D、420

（4）、Thousands of years ago, _______ covered Europe.

A、many mountains B、a large sea C、many cities and towns D、a large forest

（5）、What can we learn from Dr. Thomas Crowther?

A、We still have enough trees to cut down. B、We can find more trees in the future. C、We should do more to protect forests. D、We should stop cutting trees down now.

举一反三

    Soon computers and other machines will be able to remember you by looking at your eyes! The programme works because everyone's eyes are different. So in the future you won't have to remember a number when you want to use a machine or take money out of a bank. You'll just have to look at the machine and it will be able to tell who you are.
    The eye-recognition（识别）programme is already being tested in shops and banks in the USA, Britain, Spain, Italy and Turkey. Soon, this technology will take the place of all other ways of finding out who people are.
    However, scientists are working on other systems. Machines will soon be able to know you from the shape of your face or hand or even your smell! We already have machines that can tell who you are from your voice or the mark made by your finger.
    Eye-recognition is better than other kinds because your eyes don't change as you get older, or get dirty like hands or fingers. And even twins have different eyes, so the programme can be up to 94％ correct, depending on how good the technology is. Some programmes may only be right 51％ of the time. In Britain, it was found that 91％ of people who had tried it said that they liked the idea of eye-recognition. In the future your computer will be looking at you in the eye. So smile!

    Now satellites(卫星)are helping to forecast the weather. They are in space and they can reach any part of the world. The satellites take pictures of the atmosphere(大气), because this is where the weather forms(形成). They send these pictures to the weather station. So meteorologists(气象专家)can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change.
    Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare(比较)them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours .This may mean the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.
    So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for 3 or 5 days. Soon, perhaps , they may forecast the weather for a week or more ahead(提前).

What will the weather be like? Some people say they can know what the weather will be like from birds. When they see birds fly high out to the sea, they know it is a nice day, because birds don't like to fly out if it rains. When the weather is bad, the birds will come back to the beach. A big wind may come with a rain. Birds do not like to fly in a big wind. They may sit in a tree when rain is coming. Other animals can also tell the weather. It is a cloudy day. The rain is coming. Chickens are not quiet, and they are running here and there. Frogs are making big noise in the pool. If it is a nice day, the frogs will come out of the water.

根据短文内容，选择最佳答案。

Pollution

Hundreds of years ago, life was much harder than it is today. People didn't have modern machines. There was no modern medicine, either.

Life today has brought new problems. One of the biggest is pollution （污染）. Water pollution has made our rivers and lakes dirty. It kills our fish and polluted our drinking water. Noise pollution makes us talk louder and become angry more easily. Air pollution is the most serious kind of pollution. It's bad to all living things in the world.

Cars, planes and factories all pollute our air every day. Sometimes the polluted air is so thick that it is like a quilt over a city. This kind of quilt is called smog（烟雾）.

Many countries are making rules to fight pollution. Factories must now clean their water before it is thrown away, they mustn't blow dirty smoke into the air.

We need to do many other things. We can put waste things in the dustbin and not throw it on the ground. We can go to work by bus or with our friends in the same car. If there are fewer people driving, there will be less pollution.

Rules are not enough. Every person must help to fight pollution.

阅读理解
    We live on the Earth. It's our home. But how much do you know about it?
    The Earth is like a huge ball. Like the other seven planets, the Earth is running around the Sun. It's the third nearest planet to the Sun. It takes the Earth about 365 days to run around the Sun. At the same time, the Earth is going around itself. If you are in space, you can see lots of white clouds over the surface of the Earth. Through the clouds, you can see the blue color of the oceans and the brown color of the land. About 70% of the Earth is covered with water.
   Why do we have day and night? When the half of the Earth is facing the Sun, it's daytime. As the Earth turns and this half is away from the Sun, night is coming. And it's daytime for the other half.

Choose the best answer(根据短文内容, 选择最恰当的答案)

Dinosaurs, one of the most successful groups of animals that have ever lived, evolved(进化) into many sizes and shapes. The word "dinosaur" was invented by Sir Richard Owen in 1842 to describe these "fearfully great reptiles(爬行动物) ".

Some things to keep in mind about dinosaurs：

·Not everything big and dead is a dinosaur. Dinosaurs were a special group of reptiles. Although Pterosaurs(翼龙) were similar, they were not true dinosaurs.

·Not all dinosaurs lived at the same time. Different dinosaurs lived at different times. Although you can see Stegosaurus(剑龙) fought against Tyrannosaurus

(暴龙) in some movies like King Kong and Jurassic Park, no Stegosaurus ever saw a Tyrannosaurus. It's because Tyrannosaurus appeared on the Earth about 80 million years after Stegosaurus died out.

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