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

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

【小題2】Who often destroy the food chains?

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

【小題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 (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?

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

 

    Plants are very important. This is because plants can make food from air, water and sunlight. Animals and man cannot make food from air, water and sunlight. Animals can get their food by eating plants and other animals. Man gets his food by eating plants and animals, too. So animals and man need plants to live. This is why there are so many plants around us.
There are two kinds of plants: flowering plants and non-flowering(無花) plants. Almost all the trees around us are flowers and fruit. Non-flowering plants don’t grow flowers. You can’t see many non-flowering plants around you.
If you look carefully at the plants around you, you’ll find that there are many kinds of plants. Some plants are very big and some very small. Most of them are green. We can live on the earth because of the plants around us.
【小題1】Which of the following is the most important according to the passage?

A．Man.

B．Plants.

C．Animals.

D．Air, water, and sunlight.

【小題2】 We need many plants around us because _______ .

A．plants can grow easily	B．plants are green
C．we can get what we need from plants	D．we like all kinds of plants

【小題3】There are ______ non-flowering plants than flowering plants around us.

A．much fewer

B．much more

C．much larger

D．much better

【小題4】Which of the following doesn’t come from a plant?

A．Basket.

B．Bread.

C．Cabbage.

D．Stone Forest

【小題5】The best title（標(biāo)題）for this passage may be _________ .

A．Food from Plants	B．Plants Make Food
C．Man and Animals	D．Plants around us

A plant(植物) makes its own food in its leaves .Water comes to the leaves through the roots（根）. Air gets into the leaves through very small holes（孔）. The green coloring in the leaves uses the water and air to make the food for the plant . It also needs sunshine because a plant can make food only when the sun is shining.

Animals and people could not live without green plants . They both eat plants .People and some animals also eat the meat of some animals and these animals eat plants.

1. A plant gets food from________

A．the sun

B．its leaves

C．its roots

D．the air

2.What does the green coloring use to make the food for a plant?

A．Sunshine ,water ,air and the roots	B．Air ,sunshine and water
C．Water ,air and meat	D．Water ,sunshine and animals

3.A plant has very small holes in its leaves for__________ to come in.

A．a(chǎn)ir

B．water

C．sunshine

D．green coloring

4. A plant can make its food when it is _______.

A．cloudy

B．rainy

C．sunny

D．windy

5.People would die without________

A．a(chǎn)nimals

B．meat

C．plants

D．leaves

 

A science book gives facts. Some science books tell us about animals. Some tell us about plants. Some tell us about outer space. This page tells us about animals.

Do you know that not only the fish but also some animals live in the sea? For example, the whale is not a fish. It can't breathe in the water. It swims in the water. But it comes up for air.

The blue whale is the world's biggest animal. There are other sea animals, too. One is called the dolphin. Dolphins need air to live. They breathe air, as whales do. Dolphins are very clever. They sometimes seem to speak to each other.

Many other animals live near the sea. Seals (海豹) and otters（水獺）love the sea. They swim and play there, They eat smaller fish and sea plants. Seals and otters have thick fur. The fur keeps them warm.

1.The passage mainly tells us about _______.

A．fishes            B．plants            C．science           D．sea animals

2.Which of the sentences below is NOT true?

A．The whale can swim in the sea like a fish.

B．The whale can breathe in the sea like a fish.

C．Both whales and dolphins are sea animals.

D．Seals and otters like living near the sea.

3.What food do seals and otters like eating?

A．Only smaller fish.                       B．Only sea plants.

C．Smaller fish and sea plants.                D．Blue whales and dolphins

4.Some sea animals can keep themselves warm because _______.

A．they are big animals                     B．they like playing in the sea

C．they have thick fur                      D．they eat enough food every day