Computers are gradually replacing human labour in many areas of our lives. An important area in computer technology is the use of computer systems to perform jobs which require intelligence, such as learning how to sing or spotting familiar objects. Most computers cannot do these things because they do not have a "brain" to think. However, things are changing as people come up with newer and smarter computers. Computer scientists have come up with computers which can "think". These special computers do not actually have "brains" but are fed with many facts and pieces of information about the job they are built to do. For example, there are computers which can identify which area contains gold or other materials. They learn about the important qualities of the mineral such as its colour, weight and the areas it is most likely to be found. This makes it easier for the computers to spot the mineral in different parts of the world. Computers can also be used in factories. Businessmen and factory owners use computers in the form of robots.These robots contain computer systems that enable them to perform the job they are programmed to do. A single robot can do a job which would have take three people to do; this saves businessmen precious time. There would no longer be any need to train workers for different tasks and it would be cost-effective for employers as well. In time to come, it is possible that computer systems would take away many jobs. However, there is also an increased need for people who can build, design and repair computers.Thus, not all jobs will run out in the near future. 21 .According to paragraph 1, what is one task which needs "thinking" that computers are not able to do? A. Performing jobs B. .Spotting familiar objects C. Replacing human labour D. Coming up with newer computers 22. The phrase "things are changing" in paragraph 1 refers to_____. A. people buying computers B. computers looking like people C. people thinking like computers D. computers being able to perform intelligent tasks 23. The word "fed" in paragraph 2 suggests that_____. A. computers are given food to eat to do work B. information has to be input into the computers C. nourishing vitamins have to be provided to computers D. information has to be obtained from computers and given to another source 24. Robots save time for businessmen by_____. A. training other workers B. being built in factories C. doing the job of one person D. not being needed to be trained 25. According to paragraph 3, employers can save on money by using robots as_____ A. robots need not be paid B. robots are not expensive C. robots cannot be trained D. robots can create more jobs