There are many kinds of animals that live in the forest, such as mice, rabbits, squirrels and bears.

Animals in the forest depend on（依靠）one another for food. Many small forest animals, such as mice, eat green plants for food, and then larger animals eat them. This is called food chain. A food chain begins with the sun. The green plants in the forest use the sun’s energy to make food for themselves. It’s called photosynthesis(光合作用). Mice eat flowers and seeds that forest plants produce(生產(chǎn)). The mice get their energy from the plants, and the mice become food for a larger animal, such as the hunting hawk. So the energy from the sun passes from the plants to the mice to the hawk. A break（中斷）in any part of this food chain means some animals may not have enough food to eat.

1.Photosynthesis takes place when _____________.

A. larger animals eat small animals.

B. green plants use the sun’s energy to make food.

C. Forest animals eat the food made by green plants.

D. The food chain is broken.

2.What’s the first link（環(huán)） in a food chain?

A. The sun B. The earth C. Green plants D. Forests animals

3.Animals sometimes cannot find enough food because _____________.

A. it’s cloudy. B. there is very little food in a forest.

C. photosynthesis stops. D. there is a break in the food chain.

4.What may be the best title of the passage?

A. Animals in the world B. Food chain C. Plants and man. D. Animals are in danger.

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