Question

　　We often think of insects as our enemy. This is not quite true. Many insects are harmful. For example, flies carry disease. Other insects carry diseases, too.

　　Farmers are at war with insects most of the time. Hungry insects kill plants in the fields. Farmers spray the fields to get rid of these insects.

　　Does this mean that all insects are harmful? No. Many are of great help to man. Bees make honey. Without bees and other insects, many trees would bear no fruit. Silkworms make silk. Some insects eat other insects that kill fruit trees.

　　Have you ever seen a praying mantis? People who do not know much about the praying mantis sometimes kill it. They think it is harmful. But this insect is of great help to farmers and gardeners.

　　Long ago, many people thought of most insects as enemies. Today, we know the difference between harmful insects and those that help us.

True or false:

(1) All insects are our enemy and harmful.

(　　)

(2) Farmers spray the fields to get rid of the insects which kill plants.

(　　)

(3) Bees make silk and honey.

(　　)

(4) Bees like to eat fruit.

(　　)

(5) The praying mantis kill fruit trees.

(　　)

(6) People sometimes kill praying mantises because they think they are harmful.

(　　)

Answer 1

答案：F;T;F;F;F;T