Read the following article and select the best answer. Article: Hospital emergency rooms treat injured fingers all the time. Without treatment, a bad cut can lead to permanent damage. But how should a person know when a bleeding cut is serious enough to require medical attention? We asked Dr Martin Brown, chairman of the department of emergency medicine at Inova Alexandria Hospital in Virginia. First, the medical term for a cut or tear in the skin is a laceration(,). Dr Brown says the length is usually not as important as the depth. He says a long cut on a finger can likely be treated without a visit to a doctor if the wound is not very deep. "If you have a short but deep laceration where there's been a structure underneath that's been damaged - a tendon, a nerve, a blood vessel," says Martin, "it may, in fact, need professional attention." Some injuries - like a fingertip that gets cut off - might even require surgery to repair. That requires a specialist to either file down the bone or _ the fingertip. More often, filing down the bone is what is done because reattaching a fingertip is often not successful. How a wound bleeds can be a sign of how serious it is. Minor cuts usually produce what is known as venous bleeding. This means the blood flows steadily from the injury. The bleeding will often stop when pressure is put on the wound. Dr Brown says in most cases holding direct pressure with clean gauze or a cloth for four to five minutes should stop the bleeding. With a cut finger, holding the hand above the heart can reduce the loss of blood. But if a cut appears to be pumping blood out with some force, this may be a sign of arterial bleeding. This kind of injury should be treated by a medical professional as soon as possible. Even a cut that does not require medical attention must be kept clean to prevent infection. Small cuts should be cleaned gently with clean water. Use a washcloth to clean the area if the wound is dirty. Dr Brown says cuts should be covered with a clean, dry bandage. Question: According to the passage, _ . - a finger cut without treatment can lead to permanent damage - the length of a cut on a finger is more important than the depth - a long but not very deep cut often doesn't need professional attention - a short but deep laceration that has been damaged need professional attention.
a long but not very deep cut often doesn't need professional attention

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Read the following article and select the best answer. Article: Chicago is considering firm measures to prevent the Asian carp,a giant fish native to the Far East,from coming into North America's Great Lakes in large numbers.Such a move could cost up to$18bn,a heavy economic burden to the city. This species,more than a metre in length,was originally introduced to southern US states three decades ago to control weeds in sewage treatment plants.But they escaped into the Mississippi River and increased in number quickly,making their way north towards the Great Lakes and threatening the native fish species along the way. "Dozens of them will often leap out of the water as boats approach.''Michael Beecham,a local environmental expert,described how frightening the scene was."I've gone down the river and seen these fish jump up and hit me in the face.It is a big problem for our native species," he said. A meeting has been organized to find a technological solution to the carp problem,one of which involves blocking parts of Chicago's canal system.Listening at the meeting was John Goss,who was worried about the effect that having barriers in the canal system would have on industry."It would certainly increase the cost of transportation,"he told."It is currently very cheap and efficient to bring materials and finished goods down the Chicago ship canal.'' Another cheaper option is to eat the fish out of existence.Dirk Fucik is selling carp burger at his fish shop not far from downtown Chicago.He thinks the carps are a great resource."To catch it and throw it away is a waste,"he says."Eating them helps solve the problem and also provides jobs."But the idea has not yet caught on.So far,he is the only person in Chicago selling carp burgers. Question: According to Michael Beecham,the Asian carp - jumps out of the water to eat weeds - always attacks people if disturbed - is a big threat to the local species - forms a beautiful scene on the river
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is a big threat to the local species

Read the following article and select the best answer. Article: Are extraverts really better leaders? Can an introvert be a good leader? Research has shown a consistent positive relationship between extraversion and leadership. In groups of strangers,such as a jury , extraversion predicts who will be selected foreperson of the jury. It's actually likely to be the person who talks the most,and that person is probably an extravert. So, extraverts are more likely to be chosen for leadership positions (what we call leader "emergence"). There is also a positive relationship (although a weaker one) between extraversion and leader effectiveness, particularly evaluated effectiveness of leaders. So it appears that extraverts have _ an _ edge, _ but does this mean that introverts can't be good leaders? Of course not ! Many successful leaders are introverted, for example Abraham Lincoln, Gandhi, and in business, Bill Gates and Warren Buffett. One of the best company presidents that I've known was easily the most introverted person among his executive team, but he was very successful and his colleagues admired his "quiet reserve and confidence". So what is the critical factor that both extraverts and introverts need to emerge as a leader and to be effective? Our research has suggested that the key element is good interpersonal, or social, skills. In one study,we looked at the relationship of extraversion to leadership emergence and effectiveness and found that the advantage that extraverts had disappeared when we put social skills into the equation . In other words,only extraverts who possessed social skills were effective leaders. Good interpersonal skills are critical whether the leader is an extravert or an introvert. In addition,we know that we are more likely to choose leaders who look like their prototypes of leaders--they speak well, interact well with others, and just look "leader-like". Extraverts just naturally look more like a prototypical leader, particularly political leaders, than do introverts. Think of the U.S. presidential campaign where presidential... Question: The author writes the passage mainly to _ . - compare the differences of introversion and extroversion - encourage its readers to be more introverted - argue that introverts can also be good leaders - inform readers how to become a good leader
argue that introverts can also be good leaders