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.
小题1:Dogs who help deaf people must learn
A．different sounds
B．different languages
C．different colors
D．different faces小题2: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小题3: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.
是否比另一方大，在粗糙程度相同的情况下，最大静摩擦力的大小取决于正压力的大小，不放砖块时，双方的最大静摩擦力相等，凳子不会移动；放砖块时，乙端的凳面上有四块砖，故乙对凳子的最大静摩擦力要大于甲的，故向乙方向移动，乙获胜．