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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 create a food chain (鏈條). 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 (鏈接) 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 (土壤) 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 humans? We are members of many food chains. We eat rice, vegetables, and fruits and so on. We also eat meat and drink milk. But we often break up the food chains. We kill wild animals and also make rivers, lakes and seas polluted. When these rivers, lakes and seas are polluted, the fish in them can not be eaten. If we eat the fish, we will get strange illnesses.

Each form of life is linked (關(guān)聯(lián)的) to all others. Breaking the links puts all life in danger.

1.Which living things can use the sun’s energy directly?

2.Who often destroy the food chains?

3.Which of the following would be the best title for this passage?

All living things on the earth need other living things to live with. Nothing lives  1 . Sometimes one living thing kills    2  . Each kind of life eats another kind of life     3   live, and together they form a food chain(食物鏈). Some food chains are simple, while others are not. But    4    food chains begin with the sun, and all food chains become    5   if one of the links disappears.

All life needs sunlight to live on. But only plants can use    6   directly(直接地). They make food from sunlight, water, air and so on. Animals can only use the sun’s energy    7    it has been changed into food by plants. Some animals feed directly on plants. Others eat smaller animals. Meat-eating animals are only   8 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   9     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    10   be eaten. If people eat the fish, they will get strange diseases.

Each form of life is linked to all the others. Breaking the links puts all life in danger.

1.                A．a(chǎn)lone          B．lonely          C．together  D．happily

2.                A．other          B．the other       C．a(chǎn)nother  D．the others

3.                A．for            B．so that          C．a(chǎn)nd  D．in order to

4.                A．a(chǎn)ny            B．a(chǎn)ll             C．some D．most

5.                A．better          B．broken         C．stronger  D．nicer

6.                A．moonlight       B．laser light       C．sunlight   D．bright light

7.                A．a(chǎn)fter           B．before         C．until D．by the time

8.                A．making         B．catching        C．eating    D．feeding

9.                A．sunlight        B．a(chǎn)nimals         C．plants    D．people

10.               A．can            B．cannot         C．must  D．needn’t

單詞拼寫

1.We are having fish for d___________ tonight.

2.He was born in Shanghai, but he considers Hangzhou his home t___________  since he has lived here most of his life.

3.There are t___________ days in April as well as in June and in September.

4.5.The dentist says we should b___________ our teeth at least twice a day.

6.Without any help, his father managed to repair the car all by h___________.

7.If the sun s___________ brightly, the weather is usually warm.

8.No. 2 Middle School is a p___________ school, not a private(私立的) one.

9.The thief s___________ food from the supermarket and was caught by the policemen.

10.I came to the city two years ago. I’ve worked here for n___________ two years.

11.According to a r___________ in the newspaper, the basketball star was seriously injured.

In the universe,there is the earth,the moon,the sun,the stars and all the other things too far away to see.The earth is one of the sun’s  1  ,and the moon is our satellite.The moon is about three hundred and eighty thousand kilometers away 2   the earth ,but it’s our 3 neighbor in space.It 4  more than three days to get there by spaceship No man 5  fathar than the moon ,but spaceship 6  people has reached other planets.
Of  7   the stars ,the sun is the nearest to the earth  8    other stars are even bigger and brighter than the sun.They look small only 9  they are much farther away.You 10  see them in the daytime .But if you go out at night ,you’ll be able to see many of them.