Ques:Article: However wealthy we may be, we can never find enough hours in the day to do everything we want. Economics deals with this problem through the concept of opportunity cost, which simply refers to whether someone's time or money could be better spent on something else. Every hour of our time has a value. For every hour we work at one job we could quite easily be doing another, or be sleeping or watching a film. Each of these options has a different opportunity cost--namely, what they cost us in missed opportunities. Say you intend to watch a football match but the tickets are expensive and it will take you a couple of hours to get to and from the stadium. Why not, you might reason, watch the game from home and use the _ money and _ to have dinner with friends? This--the alternative use of your cash and time--is the opportunity cost. For economists, every decision is made by knowledge of what one must forgo--in terms of money and enjoyment--in order to take it up. By knowing precisely what you are receiving and what you are missing out on, you ought to be able to make better-informed, more reasonable decisions. Consider that most famous economic rule of all: there's no such thing as a free lunch. Even if someone offers to take you out to lunch for free, the time you will spend in the restaurant still costs you something in terms of forgone opportunities. Some people find the idea of opportunity cost extremely discouraging: imagine spending your entire life calculating whether your time would be better spent elsewhere doing something more profitable or enjoyable. Yet, in a sense it's human nature to do precisely that--we assess the advantages and disadvantages of decisions all the time. In the business world, a popular phrase is "value for money." People want their cash to go as far as possible. However, another is fast obtaining an advantage: "value for time." The biggest restriction on our resources is the number of hours we can devote to something, so we look to maximize the return we get on our investment of... Question: According to the passage, the concept of "opportunity cost" is applied to _ . Yes or no, is the answer "weighing the choice of opportunities"?

Ans:Yes
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Ques:Article: It's not often a tomato is described as so sweet 'whenever people see it they just want to hug it'--but this was no ordinary piece of fruit. The heart-shaped tomato was grown by the retired worker, Rod Matless, who said he was surprised when he noticed it in his field. Mr Matless, 69, who had a heart attack a few years ago, was so _ the fruit that he decided to sell it and donate the money to the British Heart Foundation. The 64g tomato was bought for PS16 on eBay by a woman from Wales--who said she planned to give it to someone special. Mr Matless, of Wymondham, near Norwich, said: 'I spent a couple of days thinking about what to do with it and I wasn't really sure, but this seems like a good use. I hope it will do someone somewhere a bit of good'. He added: 'It's very sweet--whenever people see it they just want to hug it.' But with the tomato's freshness a key factor , Mr Matless was up against the clock to send it to its new owner before it went bad. He said: 'I didn't want to send someone something horrible . I probably could have raised a bit more money with more time but I was worried about it.' 'It will certainly make a nice present for a loved one. I hope that they like it and I'm glad I got to help. It's all been very good fun and I've really enjoyed growing this very special tomato.' Question: We can learn from the text that the tomato grown by Rod Matless _ . Yes or no, is the answer "is very special"?

Ans:Yes
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Ques:Article: Paying a higher price than usual for a ticket to see a film in 3D is the annoyance of many a cinema-goer's life. But there may be a benefit to doing so, as a study has found that 3D films exercise the brain and improve short-term functioning in a similar way to brain-training tests. The research found that people who watched a movie in 3D improved cognitive skills, compared to those who watched it in 2D. The research was led by neuroscientist Dr Patrick Fagan from Goldsmiths University in London. More than 100 people took part in the experiment, where participants watched Disney filmBig Hero 6in either standard format or RealD 3D. They also carried out a brain-training-style test before and after seeing a section from the film. The test covered memory, reaction times and cognitive function and the results were compared later. According to the research, which was carried out in partnership with science group Thrill Laboratory, participants experienced a 23 percent increase in cognitive processing, as well as an 11 percent increase in reaction times. Dr Fagan said that the results showed enough of an improvement in brain function to suggest that 3D could play a part in improving brain power in the future. "These findings are more significant than you might think," he said. "It is a fact that people are living longer and there is a noticeable decline in cognitive brain function in old age which can worsen future quality of life. There has never been a better time to look at ways to improve brain function. The initial results of this study show that 3D films may potentially play a role in slowing this decline." A second part of the experiment involved those watching the film being fitted with headsets that scanned brain activity and this too showed heightened activity when watching 3D. According to the results, participants were seven percent more engaged with what they were watching, adding to argument that 3D movies are more like watching real-life--something Professor Brendan Walker from Thrill Laboratory... Question: What can be learned from the research? Yes or no, is the answer "3D would be a contributing factor in improving brain power."?

Ans:No
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Ques:Article: Shower Radio -- Warranty and Directions Introduction Before using the radio, please read all directions, and put warranty information in a safe place. You may need to refer to the warranty information later. Warranty The radio is warranted for one year. If it fails to work because of problems of materials, please return it to the address on the warranty card. We will not pay shipping costs for returning the radio. We will either repair or replace the radio. At least four weeks is needed to examine the problem and repair the radio. If you have not heard from us within six weeks, call our customer service department at 1-800-123-4567. Radios that are returned not for problems of materials will pay service fee and the cost of the repairs. Customers will be informed of the charge by postcard. Radios will not be returned until these fees are paid. Directions The radio is designed and built to operate well in a damp environment. To Operate the Radio 1. Put two AA batteries following the introduction. 2. Turn the POWER dial in a clockwise direction until it clicks. 3. Press the station selector button for your desired station. The station's call number will be visible on the digital screen. 4. To switch between AM or FM stations, move the AM/FM switch. To Operate the Timer 1. Each time the Timer Set button is pressed, five minutes will be put on the timer. The amount of time on the timer will be visible for five seconds on the digital screen. 2. When the timer doesn't work, a sound will be given off. The timer may be reset again after one minute. Troubleshooting Before returning the radio for service, please check the following items: Problem: Radio cannot be heard. 1. Check batteries. 2. Check Power/Volume Control. Problem: Timer does not work. 1. Check batteries 2. Follow directions for setting timer. 3. Turn the power control on. 4. Adjust the volume control. Question: According to the text, what should you do before returning the radio for service? Yes or no, is the answer "Check whether certain problems exist."?

Ans:
Yes
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