Unlike chemists and physicists, who usually do their experiments using machines, biologists and medical researchers have to use living things like rats. But there are three Nobel prize-winning scientists who actually chose to experiment on themselves - all in the name of science, reported The Telegraph. 1. Werner Forssmann (Nobel prize winner in 1956) Forssmann was a German scientist. He studied how to put a pipe inside the heart to measure the pressure inside and decide whether a patient needs surgery. Experiments had been done on horses before, so he wanted to try with human patients. But it was not permitted because the experiment was considered too dangerous. Not giving up, Forssmann decided to experiment on himself. He anaesthetized his own arm and made a cut, putting the pipe 30 centimeters into his vein. He then climbed two floors to the X-ray room before pushing the pipe all the way into his heart. 2. Barry Marshall (Nobel prize winner in 2005) Most doctors in the mid-20th century believed that _ was down to stress, spicy food or an unusually large amount of stomach acid. But in 1979 an Australian scientist named Robin Warren found that the disease might be related to a bacteria called Helicobacter pylori. So he teamed up with his colleague, Barry Marshall, to continue the study. When their request to experiment on patients was denied, Marshall bravely drank some of the bacteria. Five days later, he lost his appetite and soon was vomiting each morning - he indeed had gastritis. 3. Ralph Steinman (Nobel prize winner in 2011) This Canadian scientist discovered a new type of immune system cell called the dendritic cell. He believed that it had the ability to fight against cancer. Steinman knew he couldn't yet use his method to treat patients. So in 2007, when doctors told him that he had cancer and that it was unlikely for him to live longer than a year, he saw an opportunity. With the help of his colleagues, he gave himself three different vaccines based on his research and a total of eight... What's the main purpose of the article? A) To introduce a few Nobel prize winners who did experiments on themselves. B) To list difficulties that scientists went through in order to make important discoveries. C) To explain why some scientists chose to experiment on themselves. D) To introduce some dangerous experiments that Nobel prize winners did on themselves.
A
(Question)
Urban legends are stories that are told and believed in many places.Too many places,in fact.It simply isn't credible that the same unlikely events take place in so many different towns.For some reason,though,that particular set of events appeals to the imagination and the tale spreads. A very common North American urban legend concerns a mad man in the woods.A dangerous mad man has escaped from a hospital for the mentally ill.At some point in his life he has lost a hand and it has been replaced by a hook.A boy and a girl are out dating,sitting in a car.They hear on the radio that the area is dangerous,so they drive off.When they arrive home they find a bloodstained hook hanging on the door handle of the car door next to the girl. Missing kidney stories are fairly common.Of course,the details are variable.It might be a woman waking up in a strange hotel in Bangkok,or a man finding himself in a cold bath in Toronto.or a young man with faint memories of wild disco party,but they all find a flesh wound,and discover that one of their kidneys has been removed and,probably, sold. The back seat killer has plenty of drama.A woman gets into her Car late at night.Another Car follows her, speeding,flashing lights and really frightening her.She gets home and keeps on pressing the horn.Her husband runs out.The chasing car stops.The husband demands to know why the driver has been frightening his wife.He says he saw a strange man get into the back of the car as the wife got in,and then hide.They go and look,and there is a dangerous mad man... Why does the woman driver keep on pressing the horn? A) To warn the other driver not to follow her. B) To give herself enough courage to face the danger. C) To made her husband aware of something urgent. D) To inform her family of her safe return.
(Answer)
C
Ques: Psychological noise refers to forces within a communicator that interfere with the ability to express or understand a message exactly. For instance, an outdoor person might overstate the size and number of the fish he caught in order to convince himself and others of his talents. In the same way, a student might become so upset upon learning that she failed a test that she would be unable ( Perhaps " unwilling" is a better word) to understand clearly where she went wrong. Indeed, psychological noise is a very important communication problem. But the linear model, despite its advantages, suggests that communication flows in one direction, from sender to receiver. Although some types of messages ( printed and broadcast messages, for example) do flow in a one-way, linear manner, most types of communication, especially the interpersonal variety are two-way exchanges. To put it differently, the linear view ignores the fact that receivers react to massages by sending other messages of their own. Consider, for example, the meaning of a friend's yawn as you describe your romantic problems. Or imagine the hot face you may see as you tell one of your dirty jokes to a new friend. Nonverbal behaviors like these show that most face-to-face communication is a two-way affair. The discernible response of a receiver to sender's massage is called feedback. Not all feedback is nonverbal, of course. Sometimes it is oral, as when you ask an instructor questions about an upcoming test or volunteer your opinion of a friend's new haircut. In other cases it is written, as when you answer the questions on a midterm exam or respond to a letter from a faraway friend. The linear view holds that _ . A) communication flows heavily in one way B) communication is a two-way exchanges C) a receiver reacts to the sender in their own way D) a person doesn't have to emphasize a receiver's response
Ans: A
Why was Bastille important to the citizens of Paris? The building of the Bastille had been started in 1370 under Charles V. By the seventeenth century, it had stopped to be important for defense. Cardinal Richelieu turned it into a prison. It was not an ordinary prison to punish common crimes. Its huge doors closed only on enemies of the King. The Bastille's workings were secret. Prisoners were taken to it in closed vehicles. Soldiers on guard duty had to stand with their faces to the wall. No talking was allowed. Worst of all, a prisoner never knew if he would be there a day, a week, a year, or forever. Only the King's letter could set him free. Over the years, the number of arrests by King's letter had become fewer. By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government. Voltaire, the famous French writer, spent a year there in 1717-1718, and another 12 days in 1726. For those who believed in free speech and free thinking, the Bastille stood for everything evil. The day it was captured, only seven prisoners were found inside. Still, the Bastille was hated by the people. It was a symbol of the King's complete power. This passage mainly _ . A) tells how the prisoners were controlled by the King B) tells how little was known about the Bastille C) shows the inner workings of the Bastille D) gives a brief history of the Bastille
D