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题型:阅读选择 题类:常考题 难易度:普通

江苏省无锡市南菁高级中学实验学校2017届九年级下学期英语期中考试试卷

阅读理解

    The Smallest Life Around Us

    Tiny plants and animals live all around us.We cannot see them because they are so small,but they are everywhere. They live in the soil,in the air,and in rivers and oceans.They grow on mountains and in caves.Some live in the ice at the north and south poles; some live where it is very hot.They are found throughout cities and in the country. They grow on other plants and animals.Some are even living on you,on your skin,hair,and inside your body,in your mouth,nose,and all through your body.

    These tiny plants and animals are called microbes.The word microbe is made from two other words:micro,meaning small,and bios,meaning life.So,microbe means small life.

    Microbes have been on earth for a very long time.They may have been the first forms of life to be alive.Today there are more microbes in the world than all other living things.

    People did not know microbes had existed(存在) long.They were too small for them to see.But people did see many changes in their world﹣important changes.And they did not know what caused them.They saw food that they kept too long change color and begin to smell bad.They saw cuts and wounds grow red and painful and become worse. They saw old plants and leaves and trees crumble apart on the forest floor and disappear into the soil.Such changes were a natural part of the world,but people did not understand them.They did not know these changes were evidence(证据) of tiny plants and animals growing all around them.

(1)、Why couldn't people see microbes?
A、Because they are too small. B、Because they live inside our body. C、Because they live far from humans. D、Because they may have been the first forms of life to be alive.
(2)、The underlined phrase" crumble apart" in the last paragraph means"      ".
A、grow taller B、change into soil C、break into tiny pieces D、become colorful and energetic
(3)、Choose the answer that completes the web below.

A、Microbes are very small B、Microbes are all around us C、People can't see microbes D、Food begins to smell bad
举一反三
It's important to learn about protecting our environment. Here is a 5R rule for us:
1.Reduce
If you want to reduce waste, you should use things wisely. Millions of trees are being cut down to make paper. If everyone uses a little paper carelessly and throw it out, soon we would not have any trees left. Other things are also being wasted, and people don't know what to do with the waste in big cities. So it is necessary to reduce the waste
2.Reuse
You should always think of reusing the usable things before throwing them out. Give your clothes you do not use or the ones which are too small to the poor. With a family, you may pass on such clothes to younger brothers or sisters.
3. Recycle
Bottles, cans and paper can easily be recycled. By doing so, we save lots of time and money. For example, coke cans are sent to a factory, where they are smashed flat(压平)and melted(融化)and the melted things are made for new coke cans.
4.Recover
When you buy a box of apples, there may be a few rotten(腐烂的)apples, You have two choices: one is to throw the whole apple away, or you could cut off the rotten parts and eat the good parts. In this way, you are recovering the eatable parts of food.
5. Repair
If one of the legs of your table is broken, you can repair it instead of throwing it away. If you want to change for better ones, It is better for you to sell the old things or give them to other people who can use them after doing some repair. It is true that North America is a "throw-away" society(社会).But the time has come to change our way of life so that we can protect our environment. Every one of us should try our best.

阅读理解

    In nature,you may see many insects and animals of different colors.Have you ever wondered why?

Locusts(蝗虫)are super delicious food for birds,but it is not always an easy job for birds to catch them.It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies.The reason is that the colors of locusts change with the colors of crops(农作物).When crops are young,locusts look green.But when autumn comes,locusts change to the yellow and brown color as crops do.

    Brown bears,tigers and other animals move quietly through forests.They can't be seen easily by their enemies.This is because they have colors similar to the trees.For the same reason.polar bears that live on a land of snow and ice are white.Butterflies and bees living among the flowers are colorful like flowers.Soil insects are mostly dark—colored and they live under the soil in a dark and wet environment.However,insects with colors different from plants can easily be found and eaten by others.So in order to survive , they have to hide themselves in the daytime and appear only at night.

    Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger.As the ink spreads over.its enemies will not find themselves suddenly in a dark world.At the same time the ink fish immediately swims away.That is how it keeps itself save though it is not strong at all.

阅读下面会材料,从每题所给的A、B、C、D四个选项中选出最佳选项。

    Artificial intelligence (AI) (人工智能)is the ability of a computer program or a machine to think and learn. It is also a field of study that tries to make computers "smart". John McCarthy, a scientist, came up with the name "artificial intelligence" in 1955. Many things such as learning and problem solving can be done by computers, though not in the same way as we do.

    An unusual goal of AI research is to create computer programs that can learn, solve problems, and think logically(逻辑地). At present we use the term Al for successfully understanding human speech, recognizing(识别)human faces, operating self-driving cars and competing in some game systems like Chess and AlphGo(阿尔法狗). Some people also consider AI a danger to humans if it develops too quickly. Professor Stephen Hawking (霍金), a well-known British scientist, was not for this kind of technology.

    Math is the basic language of AI. If we raise the standard in the learning of math, our students will be more likely to become successful AI designers in the future. We not only want bright students, but also need to attract average students and give them the math skills which are needed to change them into AI designers. Besides, a good knowledge of computer science is also necessary for AI designing.

    Scientists hope to create creative and emotional AI which can possibly understand human feelings or create art. Many ways and tools have been tried to discover this fascinating field.

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