题目内容
All living things on the earth need other living things to live. Nothing lives alone. Most animals must live in a group, and even a plant grows close together with others of the same kind. Sometimes one living thing kills another, one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain(食物链).Some food chains are simple, while others are not. But all food chains begin with the sun, and all food chains become broken up if one of the links disappears.All life needs sunlight to live on. But only plants can use sunlight directly. Plants are“factories”.They make food from sunlight, water and things in the soil and air.
Plants feed all other living things. Animals can only use the sun’s energy after it has been changed into food by plants. Some animals feed directly on plants, others eat smaller animals. Meat-eating animals are only eating plants indirectly.
What about human beings? We are members of many food chains. We eat wheat, rice, vegetables, fruits and so on. We also eat meat and drink milk. But men often break up the food chains. They kill wild animals. They also make rivers, lakes and seas dirty. When these rivers, lakes and seas are polluted, the fish in them cannot be eaten. If men eat the fish, they will get strange diseases.
Each form of life is linked to all others. Breaking the links puts all life in danger.
【小题1】How does every living thing on the earth live?
A. Each plant can live alone.
B. Each animal can live alone.
C. Every living thing on the earth cannot live without others.
【小题2】Which living things can use the sun’s energy directly?
A. Animals B. Plants C. All living things
【小题3】Who often break up the food chains?
A. Human beings
B. Animals
C. Plant and animals
【小题4】 Which of the following do you think is the best title of this passage?
A. Animals B. Plants C. Food Chains
【小题5】Where can you probably find this passage?
A. In a news report.
B. In your textbook.
C. In a business magazine.
【小题1】C
【小题1】B
【小题1】A
【小题1】C
【小题1】B解析:
略
Air is all round us.It is around us___31____we walk and play.From the time we are born,air is around us on every side.When we sit down,it is around us.When we go to bed.air is 32 around us.We live 33 air.
All living things 34 air.Living things cannot live 35 air.We can live without any water for 36 days,but we cannot live for more 37 a few minutes without air.When we are working 38 running,we need more air.When we are asleep,we need less air
We live in air but we cannot see it.We can only feel it.We can feel it when it is 39 . Moving air 40 wind.
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Air is all around us.It is around us as we talk and play, From the moment we were born , we are surrounded(围绕) by air. When we sit down ,air is also around us ,we live in air .
All living things need air:living things cann’t live without air.
We can go without food or water for a few days ,but we can not live for more than a few minutes without air. When we are working or running ,we need some air. So we breathe faster than usual. When we are asleep, we need less air.
【小题1】From the text ,we know that on the earth _____
A.there is air everywhere | B.some animals don’t need air |
C.plants need more air | D.for a long time people don’t need air. |
A.there is less air on the earth than on the moon. |
B.the earth is covered with water |
C.the earth is covered with air |
D.there is no air on the earth. |
A.land | B.A mziror | C.A cat | D.A river. |
A.water | B.air | C.food | D.sunlight . |
A.dies | B.runs fast | C.takes a rest | D.sleeps |
综合填空 根据短文大意选择方框内的单词,并用其正确的形式填入空白处,使补全后的短文意思通顺, 语法正确, 结构完整。(5分)
air, pollution, easily, good, dirty |
How about modern life? Life today is much 1. . However, there are new problems. One of the biggest ones is 2. . Water pollution has made rivers 3. . It kills fish and pollutes our drinking water. Noise pollution makes us speak louder and become angry more 4. . But 5. pollution is the most serious kind of pollution. It’s bad for all living things in the world.