Read the following article and select the best answer. Article: Do you want to have a lot of close friends? In order to make it happen, you must do a lot of things right. You will learn tips on how to build a solid friendship. You should be extra respectful when you are at others' homes. For example, you must not make unpleasant comments about them. Once when I was at the house of a friend as a high school senior, I told him he had feet that looked funny while he had his socks off in his bedroom. He rebutted ,"If you're going to make fun of my feet, you can leave.'' You must _ For example, if you say you will do something for or with your friend, you must follow up on it. You must respect people other than your friends.This includes respecting your friends' family members and being polite to others in general. It is helpful to be supportive. You should try to provide help when your friends need it. You should understand them. Even if you do not agree with some of the things they do, you should show an understanding of why they do them and offer advice while avoiding telling them they are at fault for their problems. You must be caring. You must put care into the things you do for them and show concern for their troubles. Having a good attitude is a must. You must avoid being combative as well as being sad or mad too often. Take these tips to build solid friendships! Question: What did the author mainly want to show by mentioning his friend in high shool? - Friends should respect one another. - There is no perfect person in the world. - Making fun of friends is unpleasant. - It's impossible to take off one's socks before others.
Friends should respect one another.

Read the following article and select the best answer. Article: The iPhone, the iPad, each of Apple's products sounds cool and has become a fad . Apple has cleverly taken advantage of the power of the letter "i" - and many other brands are following suit. The BBC's iPlayer - which allows Web users to watch TV programs on the Internet -adopted the title in 2008. A lovely bear - popular in the US and UK - that plays music and video is called "iTeddy". A slimmed-down version of London's Independent newspaper was launched last week under the name "i". In general, single-letter prefixes have been popular since the 1990s, when terms such as e-mail and e-commerce first came into use. Most "i" products are targeted at young people and considering the major readers of Independent's "i", it's no surprise that they've selected this fashionable name. But it's hard to see what's so special about the letter "i". Why not use "a", "b", or "c" instead? According to Tony Thorne, head of the Language Center at King's College, London, "i" works because its meaning has become _ When Apple uses "i", no one knows whether it means Internet, information, individual or interactive, Thorne told BBC Magazines. "Even when Apple created the iPod, it seems it didn't have one clear definition," he says. "However, thanks to Apple, the term is now associated with portability ."adds Thorne. Clearly the letter "i" also agrees with the idea that the Western World is centered on the individual. Each person believes they have their own needs, and we love personalized products for this reason. Along with "Google" and "blog", readers of BBC Magazines voted "i" as one of the top 20 words that have come to define the last decade. But as history shows, people grow tired of fads. From the 1900s to 1990s, products with "2000" in their names became fashionable as the year was associated with all things advanced and modern. However, as we entered the new century, the trend inevitably disappeared. Question: Nowadays, the "i" term often reminds people of the products which are _ . - portable - environmentally friendly - advanced - recyclable
portable

Read the following article and select the best answer. Article: Scientists from England's Newcastle University have discovered that bacteria have the ability to detect smells, according to a study by the university on Sunday. The team of scientists, led by Dr. Reindert Nijland, discovered that bacteria can detect certain types of smell- producing chemicals, including ammonia that is produced by other bacteria. Once they sense the smells from other kinds of bacteria, the bacteria will gather together to form a colony and form a layer of slime in order to force the competitors out of their area. The response decreases as the distance between the two bacterial colonies increases. That slime, also known as biofilm, is one of the primary causes of infection on many medical implants . Biofilms also slow down ships and are believed to cost the marine industry millions of dollars annually. However, they can also be used to clean up spilled oil floating on the sea, as they grow strong on it. "This is the first evidence of a bacterial 'nose'able to detect potential competitors," Dr. Nijland said in the August 15 statement, which confirms that bacteria possess qualities similar to four of the five senses that humans enjoy (sight, hearing, touch, taste, and smell), the others being touch, taste, and sight. "The fact that bacteria formed slime when exposed to ammonia has important significance for understanding how biofilms are formed and how we might be able to use them to our advantage," he added. Their findings were published in Sunday's edition of biotechnology journal, and could change the way scientists look at how each of the senses developed over time. "It was thought for a long time that smell existed only in complex living creatures," Dr. Nijland said. "Now we see that bacteria are able to do the same, so the indication is that the ability may have developed even earlier." Question: Which of the following describes bacteria correctly? - They can talk. - They cannot see - They cannot hear. - They can imitate others.
They cannot hear.