Ques:Read the following article and select the best answer. Article: Millions of people are using cell phones today.In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with young people.They find that the phones are more than a means of communication--having a mobile phone shows that they are cool and connected. The explosions around the world in mobile phone use make some health professional worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health. On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the issues of the brain and head can be _ with modern scanning equipment.In one case,a traveling salesman had to retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree. What is it that makes mobile phones potentially harmful?The answer is radiation.Hightech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation.But they say the amount is too small to worry about. As the discussion about their safety continues,it appears that it's best to use mobile phones less often.Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need it.Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often. Question: On the safety issue of mobile phones,the manufacturing companies _ . - deny the existence of mobile phone radiation - develop new technology to reduce mobile phone radiation - hold that the amount of radiation is too small to worry about - try to prove that mobile phones are not harmful to health

Ans:hold that the amount of radiation is too small to worry about
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Ques:Read the following article and select the best answer. Article: People have strange ideas about food. For example, tomato is a kind of very delicious vegetable. It is one of useful plants that can be prepared in many ways. It has rich nutrition and vitamin in it. But in the 18th century, Americans never ate tomatoes. They grew them in their gardens because tomato plants are so pretty. But they thought the vegetable was poisonous . They called tomatoes "poison apples". President Thomas Jefferson, however, knew that tomatoes were good to eat. He was a learned man. He had been to Paris, where he learned to love the taste of tomatoes. He grew many kinds of tomatoes in his garden. The President taught his cook a way for a cream of tomato soup. This beautiful pink soup was served at the President party. The guests thought the soup tasted really good. They never thought their president would serve his honored guests poison apples. Jefferson never spoke to his honored guests about the fact. Question: Jefferson learned that tomatoes were good to eat _ . - while he was in Paris - when he was a little boy - because his parents told him so - from books

Ans:while he was in Paris
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Ques:Read the following article and select the best answer. Article: Technology is making life easier for some dairy farmers.They use robotic systems to milk their cows.Cows are trained to follow a series of paths that lead to milking stations.Only one cow at a time can enter a station. Once inside,the cow is rewarded with food.As the cow eats,a robotic arm cleans and connects the animal to the milking machine.A few minutes later,milking is complete.The gate is opened,the cow is released and the next cow enters. The robotic systems are designed to operate 24 hours a day.The cows get to decide when they want to be milked.Cows are milked an average of about three times a day.Some are milked four to six times a day. The cows wear collars around their necks that identify them to the system.A computer keeps records on their eating and milking.A cow is released from the station if the computer decides it should not be milked. The automated system also measures the temperature and color of freshly produced milk.Milk is thrown away if it does not pass the tests. Professor Plaut believes the systems will appeal especially to the next generation of farmers.She means young people who are more interested in technology and less interested in working all the time on the farm.Still,she says the price of robotic milking systems will continue to limit their use. Doug and Tina Suhr have more than 100 cows on their family farm.Last year it became the fourth farm in southeast Minnesota to get a robotic milking system.A recent story in a local agricultural newspaper said the first robot cost 175 000 dollars.The second cost 150 000. Doug told AgriNews that wages that would have been paid for one employee in five years will pay for one robot.He says the increase in milk production reaches a high of more than six kilograms per cow per day. Question: Why is the robotic system not popular now? - Because young people have no interest in it. - Because it is difficult to learn how to use it. - Because people can't afford to buy it. - Because it usually causes the waste of milk.

Ans:Because people can't afford to buy it.
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Ques:Read the following article and select the best answer. Article: Recently I fully understood that a little favor could really make a big difference. My daughter and I were, accidentally, in time to catch a falling heart just before it hit the ground. It all started when Charlene, one of my co-volunteers at the library, asked if I could do her duty on Tuesday since her doctor appointment had been unexpectedly changed. I agreed, which meant I was home on Friday instead of volunteering as previously planned. My daughter, Mary, managers a book store in town. Mid-morning, she called to ask me for help. Would I buy a fifty dollar gift card, birthday card, and cake for one of Mary's assistant managers, Cindy? Mary explained she had to call Cindy in to take the place of another assistant manager who was sick, but felt terrible about it when she discovered it was Cindy's birthday. Cindy insisted that it was just fine. But that was not what Mary thought, so she gathered enough money from other employees to throw a surprise party for Cindy. Since neither Mary, nor any of the other employees, could leave to pick up the _ , they were turning to me for help. Days later, Mary told me the wonderful rest of the story, "Cindy cried and cried when we surprised her. After the party, Cindy told us that her boyfriend had chosen that morning to break up with her. To top that off, she only had 26 cents left in her bank account." We were surprised at the series of unexpected events that took place in order to circle Cindy with love and catch her falling heart just before it hit the ground. Question: Why did Charlene ask a favor of the writer? - ShehadtoseethedoctoronFriday. - Shewantedtocelebrateherdaughter'sbirthday. - ShehadanunexpectedappointmentonTuesday. - Sheneededtoprepareforherdaughter'sbirthday.

Ans:
ShehadanunexpectedappointmentonTuesday.
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