Read the following article and select the best answer. Article: Everybody needs blood Have you ever seen buses on the street for donating blood? Medical workers on board collect blood from volunteers. The blood is then stored up and given to people who have lost a large amount of it due to accidents or diseases. Blood is one of the most important substances supporting our lives. But for now, the only way we can get more of it is through donation. And donated blood has its own problems. First of all, certain blood types are extremely rare. Type O negative blood (O-), for example, only exists in 7 percent of people, according to Sunday Times. There are fewer donors and therefore there isn't enough of this type of blood for everybody who needs it. In addition, donated blood comes from various people, which means that it has to be examined carefully for disease such as hepatitis and HIV to make sure that it's safe for transfusion. This is why scientists all over the world have been trying to make blood in labs. And now, someone finally succeeded--Marc Turner at the Scottish National BloodTransfusion Service has produced blood fit for transfusion, reported Forbes. Unlike many other scientists, who have tried to make blood substitutes by mixing up different ingredients together, Turner chose to grow blood directly from human stem cells . He developed a special technique to create a chemical environment similar to that in our bone marrow . This environment encourages stem cells to develop fully into red blood cell. According to Turner, his version of artificial blood is unlikely to contain disease viruses or produce side effects. And the best part is that what he managed to produce was type O- blood. Not only is it a rare blood type, it's also a universal type, which means it can be transfused into any patient. The new blood is scheduled for human tests in 2016. However, Turner stressed that the new study should not be taken as a signal for people to stop donating blood because it could be another 20 years before... Question: According to the text, a potential danger of blood transfusion is that _ . - it is impossible to store up large amounts of blood - blood transfusion may lead to some terrible infections - it is very hard to find matches for certain blood types - blood transfusion often leads to serious side effects
blood transfusion may lead to some terrible infections

(Question)
Read the following article and select the best answer. Article: O. Henry was a pen name used by an American writer of short stories. His real name was William Sydney Porter. He was born in North Carolina in 1862. As a young boy he lived an exciting life. He did not go to school for very long, but he managed to teach himself everything he needed to know. When he was about 20 years old, O. Henry went to Texas, where he tried different jobs. He first worked on a newspaper, and then had a job in a bank, when some money went missing from the bank O. Henry was believed to have stolen it. Because of that, he was sent to prison. During the three years in prison, he learned to write short stories. After he got out of prison, he went to New York and continued writing. He wrote mostly about New York and the life of the poor there. People liked his stories, because simple as the tales were, they would finish with a sudden change at the end, to the reader's surprise. Question: Where did O. Henry get most material for his short stories? - His life inside the prison. - The newspaper articles he wrote. - The city and people of New York. - His exciting early life as a boy.
(Answer)
The city and people of New York.

Ques: Read the following article and select the best answer. Article: John Smith was a very handsome young man but he was lazy. He had finished his education and was happy to sit in his room and listen to the radio all day long. In fact, he had been doing nothing for almost six months, which worried his father a lot. One day Mr. Smith decided that he had to do something. "Johnny, When I was your age I was working and supporting my ten brothers and sisters. I want you to go out and get a job." So that was what he did. In fact, in the next three months, Johnny started ten jobs and was fired from ten jobs. He explained to his father. "They wanted me to be at work at 8:00 a. m. and told me to do all sorts of unpleasant things." "I don't care how you do it," Mr. Smith said. "Either you earn some money or move out of the house. I gave you one week's time." In the next few days Johnny began to change. He still stayed in his room all day, but spent his time writing letters and reading through the newspapers. More and more posts began to arrive for him. He bought a new suit for himself and invited his parents to the theatre and for dinner afterwards at the most expensive restaurant in town. When his proud parents arrived home after their evening hour, a policeman was waiting at the front door. "John Smith," he said as he handed him a piece of paper, "I'll see you in the court tomorrow." When he got outside, Johnny told his parents everything. "When you told me to earn some money, I decided to put an advertisement in the newspaper saying, 'New way to money fast! Send me $ 5 and I'll tell you my secret.' When I received the money I wrote back telling people to do as I do." Johnny was fined $250 by the court and was ordered to pay all the people back. As he left the court house feeling very ashamed, a newspaper man came up to him, "Young man, would you like to tell your story to my newspaper for $2,500?" Question: Johnny was fired from the jobs because _ . - he liked listening to the radio - he had a big family to support - he spent a lot of time writing letters - he didn't do the jobs well
Ans: he didn't do the jobs well

Ques:Read the following article and select the best answer. Article: The number of accidents involving pedestrians wearing headphones is on the rise , a report suggests, causing fresh warning from road safety groups in Britain . A US-based study found a total of 116 reports of death or injury to pedestrians wearing headphones between 2004 and 2011 , jumping from 16 in 2005 to 47 in 2011 . Most victims were men (68%) and under the age of 30 (67%) , with around one in ten of all cases (9%) under the age of 18 .Some 89% of the cases occurred in urban areas and more than half (55%) of the victims were struck by trains . Eighty-one of the 116 accidents (70%) resulted in the person's death--- even though a warning was sounded in around a third of the cases . The study concluded , " The use of headphone may be a safety risk to pedestrians , especially in environments with moving vehicles(cars) . Further research is needed to determine if and how headphone use threatens pedestrian safety ." British road safety groups warned pedestrians to be careful. Floor Lieshout , director of Youth For Road Safety , said, " This study shows once more the importance of using all of our senses while we are near traffic . It is important that we find an attractive way to make youth learn about the risks of wearing headphones in traffic ." Andrew Howard , who is the head of road safety at the Automobile Association , added that some pedestrians can be "so focused in their own little world they forget the world going on around them".That can include headphone wearers , Howard said, but also people talking on phones. However , Howard said that more researches needed to be done. Earlier studies have shown that people wearing headphones or talking on phones can suffer "inattentional blindness" which makes them isolated from the world around them . Ian Harvey , at the charity Civic Voice , said that " to defeat isolation and to help build a civic society , people need to interact with each other . He said , " A basis for any civilized society is communication--- Surfing the web , listening to MP3s ,... Question: Howard will probably agree that _ . - it is safe if you wear headphones in a proper way - people wearing headphones are more likely to go blind - most people wear headphones because of loneliness - it is dangerous to talk on phones while walking

Ans:
it is dangerous to talk on phones while walking