Read the following article and select the best answer. Article: Every year, World Blood Day is celebrated by blood services worldwide on 14 June, the birthday of Nobel Prize winner Karl Landsteiner, the man who discovered the ABO blood group system. If you have every thought of becoming a blood donor, just register to do it. And you should never worry about the donation. Just under a pint (around 470ml) of blood is taken at one sitting. This amount is no more than 13 percent of your total blood volume, and is quickly replaced by your body. It may come as a surprise, but whole blood is only rarely used. Different blood components are used to treat a range of conditions. None goes to waste. Read blood cells are frequently used to replace heavy blood loss after an accident, surgery or childbirth. White blood cells and antibodies are used to help people fight infections if their immune system doesn't appear to be responding to antibiotics . Plasma ,the straw-coloured fluid which carries the blood cells and contains proteins, are used to treat burned patients. First-time donors should be aged between 17 and 65, weigh at least 50kg and be in good health. If you have donated before, you can start being a donor again up to your 70th birthday. Although most people are able to give blood, some people who pose health risks or are at a higher risk of having come into contact with an infectious disease are no tasked to be donors. Pregnant women or those who have had a baby in the last 9 months should not donate blood. Blood has a very short shelf life. Some blood components can be kept longer than others, for instance red blood cells will keep for 35 days but platelets for only five. Remember, you should wait at least 16 weeks before donating blood again. Question: People should never worry about the donation mainly because _ . - it causes no pain to their body - being a blood donor is a great honor - their bodies can produce new blood soon - people have a mature research on it
their bodies can produce new blood soon

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Read the following article and select the best answer. Article: Over two hundred years ago, Adam Smith introduced some ideas which brought about a world revolution.If we enjoy a high standard of living in modem society, we owe much to this Scottish economist and philosopher.If we enjoy driving in beautiful cars, wearing fashionable shoes, or flying away to distant places for exciting holidays, we should perhaps pay thanks to the man who made it all possible. What was Adam Smith's contribution? Like so many ideas which have surprising effects, his was a simple one.He watched workers practicing their craft of pi11 making.One man would heat the strip of metal, stretch it out, cut off a suitable length, shape it, cool it and finally smooth and shine it.Smith drew attention to the advantages which could be gained if these various tasks were performed by different workers.Let one be responsible for preparing the metal.Another for stretching and cutting.Another for shaping.Another for finishing.He described the technique as the Division of Labor; in this way workers repeat the same actions again and again.Smith made the world believe that specialization could solve the problem of poverty and want. What was the result? The Industrial Revolution.Productivity was greatly increased.For Britain, where the revolution started, there was a prosperity which made it the richest country in the nineteenth century.British trains and railway lines spread out like a spider's web across the world.British ships were used to carry the new goods from one comer of the world to another. The revolution is not over.It is still with us, but now it is a worldwide phenomenon .Everywhere, factories are producing large numbers of similar products, and are in continuous production.What were called mass - production lines yesterday are called robotic productions today.The pace of change is increasing.And if these techniques have brought us prosperity, they have also brought us a little misery in overcrowded towns, boring jobs and, most of all, unemployment. Question: We can learn from the text that the Industrial Revolution _ . - led to Adam Smith's idea of specialization - was finished in the nineteenth century - also has its side --effects in society - put an end to poverty in the world
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also has its side --effects in society

Ques:Read the following article and select the best answer. Article: Dr Wiseman started "the laugh lab" project in September 2001. It is the largest study of humour. Participants are invited to log on to the laugh lab website, give a few personal details, tell their favourite jokes and judge the jokes told by other people. The project will last for a year, and the organizers hope to finally discover the world's funniest joke. But there is also a serious purpose. The researches want to know what people from different nations and cultures find funny. And they want to find out the differences between the male and female sense of humour. The idea is that if we want to understand each other, we have to find out what makes us laugh. This is a subject that has long attracted psychologists and philosophers. Most of the time, people are not completely honest. We do things that society expects us to and say things that help us get what we want. But laughing cannot be controlled. When we laugh, we tell the truth about ourselves. By December 2001 over 10, 000 jokes had been submitted. This gave the scientists enough evidence to make early conclusions. It seems that men and women do have different senses of humour, for instance. "Our findings show the major differences in the ways in which males and females use humour, " said Dr. Wiseman. "Males use humour to appear superior to others, while women are more skilled in languages and prefer word play. " Researchers also found that there really is such a thing as a national sense of humour. The British enjoy what is usually called "toilet humour". But the French like their jokes short and sharp: "You're a high priced lawyer. Will you answer two questions for $500?" "Yes. What's the second question?" The Germans are famous for not having a sense of humour. But the survey found that German participants were more likely to find submitted jokes funny than any other nationality. Perhaps that proves the point. Is this joke funny? I don't know, but let's say yes, just to be safe. Dr Wiseman and his workmates also submitted jokes created by... Question: Scientist started " the laugh lab" project _ - to find the funniest joke in European countries - to know what funny people are like from different nations and cultures - to find out the differences between the male and female sense of humour - to get more personal details about participants

Ans:
to find out the differences between the male and female sense of humour