24．In America sport _________ in people’s everyday life．

A．plays an important part　　　　　　　　　　　　　　　　 B．plays important part

C．play important part　　　　　　　　　　　　　　　　　　　 D．plays a important part

23．The film Titanic　 ____________ a true story．

A．based on　　　　　　　　 B．base on　　　　　　　　　 C．was based on　　　　　 D．had based on

22．Tom has been away from home for quite a while and he is often __________ his family．

A．concern　　　　　　　　　　　　　　　　　　　　　　　　　　 B．concerned　　　　　　　

C．concern about　　　　　　　　　　　　　　　　　　　　　　 D．concerned about

21．It is the second time that he ____________ the film．

A．has seen　　　　　　　　 B．had seen　　　　　　　　 C．sees　　　　　　　　　　　 D．saw

It is reported that, recently, a robot was used to be the master of a wedding ceremony and that some other robots were used as special guards in South Korea.

Undoubtedly, with the development of new technology, robots are making greater contributions to human society. They are efficient workers in factories. They can also take the place of humans to deal with some dangerous work, like detecting landmines, exploring unknown places and so on.

However, we should admit that robots are not always as perfect as we think. Firstly, they aren’t avoid making mistakes themselves, and once there is something wrong with them, a series of problems may occur. Secondly, if humans rely too much on robots, we may become lazy, gradually losing our ability to make a living. What’s more, if given emotions, robots can hardly be controlled, which may lead to terrible disasters.

In my opinion, like each coin has two sides, the modern application of robots has both advantages and disadvantages. The key point is that we should regard robots as tools for us. Though they are important, we should use them properly.

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75. intelligence　 76. similarities　 77. simplify　 78. endangered　 79. deserves　 80. decreased　 81. instrument　 82. broadcast　 83. selection　 84. appreciate