The World's Largest Insect
This giant insect can be used as a toy. A child ties one end of a string to a stick and the other end around the "neck" of an insect. Holding the stick, the child lets the insect go. With a loud whirring sound, the insect takes off, pulling the string in a large curve over the child's head. The child laughs as the stick jumps around. The child is African, and the toy is the African Goliath beetle, the largest insect in the world. 
The Goliath is a true insect because it has six legs and a body that is divided into three parts. Like all beetles, it has two pairs of wings. The front pair are thick and stiff and protect the back pair, which are soft. It is these soft back wings that make the beetle fly forward. They also cause the loud whirring sound the beetle makes when it flies. To steer, the beetle twists and turns its legs the same way you steer a bike by turning its front wheel. 
African children often use the Goliath beetle as a toy. Although it is over 15 centimeters long, it is quite harmless. 
The African Goliath beetle is _______.  

A．the world's largest insect

B．a toy used in many parts of the world

C．the only insect found in Africa

D．the world's smallest insect

What made the whirring sound that the child heard?

A．The curved string.	B．The beetle's soft wings.
C．The beetle's six legs.	D．The beetle's body.

We know the Goliath beetle is a true insect because it _______.  

A．makes a whirring sound when it flies

B．has both soft and hard wings

C．has six legs and a body with three parts

D．can fly

When flying, the Goliath steers by_______.  

A．turning its soft back wings

B．twisting and turning its hard front wings

C．twisting and turning its legs

D．twisting and turning its whole body

Where is the passage probably from ?

A．A story book .

B．A newspaper.

C．A student’s article

D．A science magazine .