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1）Most of today's robots are employed in the automotive industry，where they are programmed to take over such jobs as welding and spray painting automobile and truck bodies.
2）Robots，already taking over human tasks in the automotive field are beginning to be seen，although to a lesser degree，in other industries as well.
3）The robots used in nuclear power plants handle the radioactive materials，preventing human personnel from being exposed to radiation.
4）Robots differ from automatic machines in that after completion of one specific task，they can be reprogrammed by a computer to do another one.
5）Engineers skilled in microelectronics and computer technology are developing artificial vision for robots.
6）With the ability to “see”，robots can identify and inspect one specific class of objects out of a stack of different kinds of materials.
7）Anyone wanting to understand the industry of the future will have to know about robotics.
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1）People in advanced industrial societies are increasingly concerned with opportunities for leisure.
2）The importance people attach to paid holidays and the rapid development of services for mass entertainment and recreation are signs of this increasing concern.
3）The specific use of leisure varies from individual to individual.
4）Since leisure is basically self-determined，one is able to take to one's interests and preferences and get involved in an activity in ways that will bring enjoyment and satisfaction.
5）Basically，such attitudes amount to a recognition that leisure is an important area of life and a belief that Leisure can and should be put to good use.
6）For example，the degree to which and the ways in which a school encourages participation in games，sports and cultural pursuits are likely to contribute to the shaping of leisure attitudes on the part of the students.
7）Schools usually set as their educational objective the attainment of a balanced development of the person.
8）The more seriously this is sought，the more likely positive attitudes towards leisure as well as academic work will be encouraged.
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1）The problem of Jet Lag is one every international traveler comes across at some time. （para.1）
2）The effects of rapid travel on the body are actually far more disturbing than we realize. （para.2）
3）He later blamed his poor judgement on Jet Lag. （para.3）
4）Now that we understand what Jet lag is，we can go some way to overcoming it.（para.4）
5）The other belongs in our internal clocks which，left alone，would tie the body to a 25 hour - yes，25 - rhythm.（para.5）
6）In time the physiological system will reset itself，but it does take time. （para7）
7）One reason for this discrepancy is that different bodily events are controlled by different factors. （para.8）
8）It is not feasible to wait four days until the body is used to the new time zone. （para.9）
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1）Nation classified as “aged” when they have 7percent of more of their people aged 65 or above. （para.1）
2）The nearer a society approximates to zero population growth，the older its population is likely to be - at least，for any future that concerns us now.
3）The older you are now，of course，the greater this proportion will be，and greater still if you are a woman.
4）If you are now in your thirties，you ought to be aware that you can expect to live nearly one third of the rest of your life after the age of 60.