Dogs can also go to school to learn how to help people who cannot hear. If a person cannot hear, we say he or she is deaf.
Dogs who help deaf people must learn many different sounds. Then they must be able to show the deaf person what is making the sound. When they hear a visitor at the door, dogs learn to walk to the deaf person and then walk to the door. And if a telephone rings, they walk to the deaf man or woman and then walk to the telephone. These dogs can also help deaf mothers. If a baby is crying in another room, dogs walk to the mother and then to the baby. These dogs wear a yellow coat to show that they are special dogs that are helping a deaf person. There have been many times when these dogs have saved a life. You may see in a newspaper that a dog heard a fire alarm and lay down near the deaf person's feet. That is the sign for danger. The person knows that something is wrong and can go away from the fire.
Special dogs can also help people who are disabled in various ways. For example, dogs can pull off their gloves or socks! Think how difficult your life would be if you were blind, deaf or disabled! But if you had a special dog like this to help you, your life would be much easier.
Dogs who help deaf people must learn             

A．different sounds	B．different languages
C．different colors	D．different faces

According to the passage, the special dogs can NOT             

A．care for babies	B．talk to people
C．realize the danger	D．pull off socks

Which of the following statements is TRUE?

A．Special dogs can do what people cannot do.

B．Special dogs can only help people who are deaf.

C．Special dogs can help people in every part of their life.

D．Special dogs can make some people's life much easier.