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Read the following article and select the best answer. Article: PERTH--Search crews will send a submarine deep into the Indian Ocean on Monday for the first time to try to determine whether signals detected by sound-locating equipment are from the missing Malaysian plane's black boxes, the Australian head of the search said. Angus Houst on said the crew on board the Ocean Shield will send the underwater vehicle sometime Monday evening. The Bluefin 21 submarine can create a sonar map of the area to chartany wreckage on the seafloor. The move comes after crews picked up a series of underwater sounds over the past two weeks that were consistent with an aircraft's black boxes. "We haven't had a single detection in six days, and l guess it's time to go under water," said Houston. "Analysis of the four signals has reduced the search area on the ocean floor. The experts have therefore determined that the Australian Defense Vessel Ocean Shield will stop searching with the Towed Pinger Locator later today and use the underwater vehicle Bluefin 21 as soon as possible," he said at a news conference in Perth. _ He said the submarine will take 24 hours to do each task, including two hours to dive, 16 hours to search the bottom, then two more hours hack up and four hours to download data. Recovering the plane's flight data and cockpit voice recorders is necessary For investigators to try to figure out what happened to Flight 370, which disappeared on March 8. Houston said the search using the submarine will be a slaw and painstaking process. The submarine takes six times longer to cover the same area as the pinger locator,and will need about six weeks to two months to examine the present underwater zone. The signals are also coming from 4,500 meters (15,000 feet) below the surface, which is the deepest the submarine can dive. Question: The submarine will be sent deep into the Indian Ocean on Monday to _ . - create a sonar trap of the area - pick up underwater sounds - see if the signals detected are from the target black boxes - reduce the search area on the ocean floor
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see if the signals detected are from the target black boxes

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Read the following article and select the best answer. Article: The combined sales of the 100 largest foreign investing companies in the U.S. increased by 40% in the two years between 1987 and 1989, and the number has continued to increase steadily. In 1990, South Africa proved to be the largest financial investor in the U.S., controlling about $19.2 billion in sales. The Netherlands and the U.K. follow as second largest investors--and Germany next. New of the list of the top 100 foreign investors are 12 banking and finance and insurance companies--the largest, the Hong Kong-Shanghai Banking Corp from Hong Kong. The number of Latin American companies engaged in business here is growing steadily, often through third country holding companies. Why are so many firms coming to the U.S.? There are many reasons. One of the greatest attractions, of course, is a market of over 200 million consumers with a high average per capital income. In addition, with the devalued dollar the cost of American labor has declined markedly, relative to many foreign labor costs. Some firms seeking to avoid bureaucratic and/or political pressures at home find the U.S. a politically stable environment in which to work. Many hope they may be able to continue selling to the American market even if the U.S. Government restricts imports further, or if major price changes occur due to currency fluctuations . Many foreigners are attracted by U.S. technology, its modern management methods, its labor saving and mass production techniques. Question: The most important reason why so many companies come to the U.S. is that _ . - the U.S. technology is advanced - the environment is politically stable - the labor cost there has been reduced - the market in the U.S. is very attractive
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the market in the U.S. is very attractive

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Read the following article and select the best answer. Article: Almost every day we come across situations in which we have to make decisions one way or another. Choice, we are given to believe, is a right. But for a good many people in the world, in rich and poor countries, choice is a luxury, something wonderful but hard to get, not a right. And for those who think they are exercising their right to make choices, the whole system is merely an illusion, a false idea created by companies and advertisers hoping to sell their products. The endless choice gives birth to anxiety in people's life. Buying something as basic as a coffee pot is not exactly simple. Easy access to a wide range of everyday goods leads to a sense of powerlessness in many people, ending in the shopper giving up and walking away, or just buying an unsuitable item that is not really wanted. Recent studies in England have shown that many electrical goods bought in almost every family are not really needed. More difficult decision-making is then either avoided or trusted into the hands of the professionals, lifestyle instructors, or advisors. It is not just the availability of the goods that is the problem, but the speed with which new types of products come on the market. Advances in design and production help quicken the process. Products also need to have a short lifespan so that the public can be persuaded to replace them within a short time. The typical example is computers, which are almost out-of-date once they are bought. This indeed makes selection a problem. Gone are the days when one could just walk with ease into a shop and buy one thing: no choice, no anxiety. Question: By using computers as an example, the author wants to prove _ . - advanced products meet the needs of people - products of the latest design flood the market - competitions are fierce in high-tech industry - everyday goods need to be replaced often
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products of the latest design flood the market