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  3. The first robots were invented in the 1920s. Robots have appeared in many American films. In some films, they are stronger, fast

The first robots were invented in the 1920s. Robots have appeared in many American films. In some films, they are stronger, fast

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问题     The first robots were invented in the 1920s. Robots have appeared in many American films. In some films, they are stronger, faster and cleverer than people.
    In real life, robot are mainly used in factories. They do some dangerous and difficult jobs for humans.
    Robots also help disabled people, for example, blind people. Today many blind people have a guide(向导)dog to help them. In the future, guide dogs might be robot dogs.
    One kind of robot guide dog has wheels. It moves in front ot the owner. It is very clever. It knows the speed of its owner’s walk. The owner wears a special belt(带子). This belt sends instructions to the owner from the dog, such as"Stop here""Turn left"or"Turn right".
    In the United States, another kind of robot helps disabled people to take care of themselves in their daily life. The robot hears the sound of its owner’s voice. It follows instructions such as Turn the page or ’Make a cup of coffee".
    Robots are also used in American hospitals. They can do simple jobs. At one hospital, for example, a robot takes meals from the kitchen to patients’ rooms. It never gets lost because this robot has a map of the hospital in its computer memory.
    Though robots can help people in many different ways, they will never take the place of humans.
In the passage, the writer wants to tell us that_____.
选项 A、robots are stronger and cleverer than humans
B、disabled people cannot look after themselves without the robots
C、robots will take the place of humans some day in the future
D、robots can help humans in many different ways
答案D
解析 根据最后一段中的Though robots can help people in many different ways可知，作者主要想告诉我们机器人可以在很多方面帮助人类，故选D。
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