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I'm taking a test and have to guess the right answer to the question after the article. Article: We all know that eating junk food can make us fat. However, a new study suggests that it can do more than that - it can also make us lazy, reported CBS News. In the study, researchers at the University of California, Los Angeles, US divided 32 female rats into two groups. The first group was fed a diet of healthy food such as corn and fish, while the second was given a diet of highly processed food rich in sugar, namely "junk food". Within three months, the rats in the second group were already much fatter than those on the healthy diet. And when researchers trained the rats to do simple tasks, they found even more differences between the two groups rather than weight. During the task - pushing a lever to receive a reward of sugar water - the rats on the junk food diet were found to be less willing to move, and they took longer breaks between each push than the lean rats did. "It is as if the rat is thinking 'This is too much work'," Aaron Blaisdell, leader of the study, told the Los Angeles Times. But what about the possibility that the fat rats were less passionate about getting sugar water because they were already eating lots of sugar in their daily diet? That's why researchers repeated the tests by rewarding fat rats with plain water when they were extremely thirsty. However, the results came out just the same. According to researchers, these differences suggest that junk food changed the chemistry in the rats' brains. The experiment didn't end _ . After six months, the rats' diets were switched, and the overweight rats were given a healthy diet for nine days. However, this change didn't help reduce their weight or improve their ability to perform tasks, which means the effects of their junk food diet persisted . "There's no quick fix," said Blaisdell. For a long time, we've believed that people become fat because they are lazy. But this study has proven the opposite to be true as well, which indicates that laziness and obesity are a "vicious cycle ". So, if you constantly feel tired, lacking any... Question: During the first three months of the experiment by researchers at the University of California, _ . Options: A: rats from the healthy diet group ate nothing but corn and fish B: rats on the junk food diet ate more than those on healthy diet C: rats on the healthy food diet performed better at simple tasks than those on the junk food diet D: rats on the junk food diet seemed uninterested in sugary food
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C

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I'm taking a test and have to guess the right answer to the question after the article. Article: When creating a digital advertisement or something to promote a product or service ,music is one of the most important aspects. Whether it is simply a jingle ,musical note or any other use of sound,music can play a huge role in attracting a customer's attention or being noticed by your target audience. Music can work hand-in-hand with what you are advertising. Many times the advertising jingle, or saying, is what the audience remembers. Companies such as McDonald's and Subway have used this method many times with different jingles and little sayings that are easy to remember and fun to sing along with. Usually concepts that are part of a jingle would sound conceited and pompous when said in a normal conversation. When put to music however, and sung in a rhythm,it suddenly sounds attractive. For example, if someone said," No one does it better than me" in a normal statement, this would sound very conceited. Add music and a tune to this statement and it becomes attractive and fun for others to sing along with. While understanding how important music is for your advertising needs, it is also important for you to know the best way to get special music. Having people from many different backgrounds all over the world write something specifically for you is one of the best ways to get songs written just for you. You simply choose which one you believe is best for the project. So instead of hiring a single songwriter to compose your music, you can run a contest for you advertising jingle and songwriters around the world write you a finished jingle in an attempt to win your contest. Question: What does the passage mainly tell us? Options: A: How to use music in advertising. B: Advertising music can help sell products. C: How to get an advertising jingle. D: Advertisements are important in promoting.
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B

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I'm taking a test and have to guess the right answer to the question after the article. Article: Getting a new PC is one thing, Keeping it running smoothly is quite another. While a personal computer should continue to perform well for years, users know that system unsteadiness does exist Yet you can reduce it to the smallest amount by following the tips below . First, put in as little software as possible. You'11 have fewer software -related problems and a system that is easier to manage. Second, you should ensure that you have as much memory (RAM) in your PC as you need If you run Windows 98,your computer should have as least 128 megabytes (MB)of RAM and more You can also get by with 128 MB of RAM if you use Windows NT or Windows2000,but these operating systems will run much more smoothly if you have 256 MB of RAM or more. Third, make sure you buy good hardware. Noname products may be cheaper and sometimes just as good as named-brand products, but name-brand products usually became well-known because of famous companies because Windows will more often support the hardware that you buy ,If you are starting out with to have been tested thoroughly with your operating system, and you will generally experience fewer problems. Fourth, do prepare for disaster .No matter how well your system runs when you get it ,the day will come when it will need to be replaced .Hopefully, you will replace it because technology has become outdated, but you may need to replace it also because the hard drive crashes or you begin experiencing problems that no one can figure out .That's why it 's important to you're your important to copy your important information regularly. Whether you use a tape backup device or a CD-RW drive, it's important to make a regular backup plan and stick to it . Question: the best title of this passage would be "......" Options: A: the Tips You must Follow B: How to Start out with a Computer C: How to Use your PC Better D: How to Keep Your PC Stable
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D