Read the following article and select the best answer. Article: When prehistoric man arrived in new parts of the world, something strong happened to the large animals; they suddenly became extinct. Smaller species survived; the large, slow-growing animals were easy game, and were quickly hunted to extinction. Now something similar could be happening in the oceans. That the seas are being over-fished has been known for years and researchers such as Ransom Myers and Boris Worm have shown how fast things are changing. They have looked at half a century of data from fisheries around the world. Their methods do not attempt to estimate the actual biomass (the amount of living biological matter) of fish species in particular parts of the ocean, but rather changes in that biomass over time. According to their latest paper published in Nature, the biomass of large predators (animals that kill and eat other animals) inanes fishery is reduced on average by 80% within 15 years of the start of exploitation. In some long-fished areas, it has halved again since then. Dr. Worm acknowledges that these figures are conservative . One reason for this is that fishing technology has improved. Today's vessels can find their prey using satellites and sonar, which were not available 50 years ago. That means a higher proportion of what is in the sea is being caught, so the real difference between present and past is likely to be worse than the one recorded by changes in catch sizes. In the early days, too, longlines would have been more saturated with fish. Some individuals would therefore not have been caught, since baited hooks would have been available to trap them, leading to an underestimate of fish stocks in the past. Furthermore, in the early days of longline fishing, a lot of fish were lost to sharks after they had been hooked. That is no longer a problem, because there are fewer sharks around noise. Dr. Myers and Dr. Worm argue that their work gives a correct baseline, which future management efforts must take into account. They believe the date support an idea current among marine... Question: The author seems to be mainly concerned with most fisheries' _ . - management efficiency - biomass level - catch-size limits - technological application.
biomass level

(Question)
Read the following article and select the best answer. Article: One day a mime is visiting the zoo and tries to earn some money as a street performer. As soon as he starts to draw a crowd, a zookeeper pulls him into his office. The zookeeper explains that the zoo's most popular attraction, a gorilla , has died suddenly and the keeper fears that attendance at the zoo will fall off. He offers the mime a job to dress up as the gorilla. The mime accepts. The next morning the mime puts on the gorilla suit and enters the cage before the crowd comes. He soon discovers he can sleep, play and make fun of people and he draws bigger crowds than he ever did as a mime -- the job he likes but loses. However, with days going by, he begins to notice that the people are paying more attention to the lion in the cage next to his. Not wanting to lose the attention of his audience, he climbs to the top of his cage, crawls across a partition , and dangles from the top to the lion's cage. The lion gets angry at this. The scene is _ to the crowd. At the end of the day he is given a raise for being such a good attraction -- well, this continues for some time. The crowds grow larger, and the mime's pay keeps going up. Then one day when he is dangling over the lion he slides and falls. The mime is terrified. He starts screaming "Help me!", but the lion is quick. The mime soon finds himself flat on his back looking up at the angry lion and the lion says, "Shut up you fool! Do you want to get us both fired?" Question: The mime accepts the zookeeper's offer because _ . - he doesn't like being a mime - he has been out of work - he likes performing at the zoo - he is offered a higher pay there
(Answer)
he has been out of work

Ques:Read the following article and select the best answer. Article: Thanks to the Internet, a whole new online world has been opened up for us to meet, chat and go where we've never been before. But just as in face to face communication, there are some rules of behavior that should be followed when on line. The basic rule is simple: treat others in the same way you would want to be treated. Imagine how you'd feel if you were in the other person's shoes. For anything you're about to send: ask yourself, "Would I say this to the person's face?" if the answer is no, rewrite and reread. Repeat the process till you feel sure that you'd feel comfortable saying words to a person's face. If someone in the chat room is rude to you, your instinct is to fire back in the same manner. But try not to do so. Just pay no attention to it, or block his message. If it was caused by a disagreement with another member, try to fix the situation by politely discussing it. Remember to respect the beliefs and opinions of others in the chat room. Everyone was new to the network once. Offer advice when asked by newcomers, as they may not be sure what to do or how to communicate. When someone makes a mistake, whether it's a stupid question or an unnecessarily long answer, be kind about it. If it's a small mistake, you may not need to say anything. Even if you feel strongly about it, think twice before saying anything. Having good manners yourself doesn't give you license to correct everyone else. If you do decide to tell someone about a mistake, point it out politely At the same time, if you find you are wrong, be sure to correct yourself and apologize to those that you have offended. It is not polite to ask others personal questions such as their age, sex and marital status. Unless you know the person very well, and you are both comfortable with sharing personal information, don't ask such questions. Question: If you are hurt in the chat room by others, you should _ . - fight back in the same way - take it seriously - be angry at them - have none of them

Ans:
have none of them