Most robots move on wheels. They have arms and people can put different ends on the arms so that the robots can do many different jobs. F_______ example, the end on the arm may help the robot to hold s_________. Many robots are very necessary in factories. They can carry things from one area of the factory to another. They are also used to carry things in hospitals. You may know that robots have been very useful in h_________ human explore space. Robots can also he如humans to explore under the sea. This robot is c_________ Alvin. It can carry out scientific experiments 4, 500 metres under the sea. It can a_________ collect things from the seabed with its arms. Luckily, more and more robots are coming into our daily life.

1.F________

2.s________

3.h________

4.c________

5.a________

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