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 (链条). 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 (链接) 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 (关联的) to all others. Breaking the links puts all life in danger.

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

A．Animals.	B．Plants.
C．Animals and plants.	D．All living things.

2.Who often destroy the food chains?

A．Humans.	B．Animals.
C．Plants and animals.	D．Humans and wild animals.

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

A．The Sun’s Energy	B．Plants
C．Food Chains	D．Living Things

 

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 (链条). 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 (链接) 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 (关联的) to all others. Breaking the links puts all life in danger.
【小题1】Which living things can use the sun’s energy directly?

A．Animals.	B．Plants.
C．Animals and plants.	D．All living things.

【小题2】Who often destroy the food chains?

A．Humans.	B．Animals.
C．Plants and animals.	D．Humans and wild animals.

【小题3】Which of the following would be the best title for this passage?

A．The Sun’s Energy	B．Plants
C．Food Chains	D．Living Things

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(食物链). 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．alone          B．lonely          C．together  D．happily

 

2.                A．other          B．the other       C．another  D．the others

 

3.                A．for            B．so that          C．and  D．in order to

 

4.                A．any            B．all             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．after           B．before         C．until D．by the time

 

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

 

9.                A．sunlight        B．animals         C．plants    D．people

 

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