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Read the following article and select the best answer. Article: This may be music to your ears. Researchers P. Jason Rentfrow and Samuel Gosling gave 3,500 people a personality quiz. Then they asked them to name their favorite kind of music. "We found that the musical style people like are closely linked to their personalities," Gosling says. RAP/HIP-HOP Known for their quick speech, some rappers can say more than 700 syllables a minute! If you like rap/hip-hop, you are energetic and have a way with words. _ , whether it's new moves on the dance floor or your hip style. CLASSLCAL In the 18thcentury, classical musicians were like rock stars. Beethoven and Mozart, for example, played in packed concert halls. If you like classical, you are open to new ideas and like debating with friends. Creative and imaginative, you can easily spend many hours scrapbooking, writing or painting. COUNTRY Country music came from the folk songs of English, Scottish, and Irish settlers of the southeastern United States. If you like country, you express your opinions well, which makes you the ideal class president or team captain. Traditional and loyal, you enjoy spending time with your family. POP Pop music is designed to appeal to almost everyone, and it does. Each year, the industry brings in about 30 billion dollars! If you like pop, you are attractive to your friends. You can make big things happen, like planning for a huge party or inspiring your team to victory. ROCK In the 1950s, rock music created a brand-new culture. Teenagers, for the first time, had an identity separate from adults and children. If you like rock, you are a risk-taker who never accepts no for an answer. You rise to any challenge, like doing very well in a big exam or landing the lead in the school play. If these personality profiles don't match you, that's OK. These are just for fun. Question: We can know from this passage that _ . - in the 18 thcentury, classical musicians were like pop stars - country music came from the old songs of the Native Americans - pop music is liked by the largest number of people in the world - everyone can find his personality in this passage
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pop music is liked by the largest number of people in the world

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Read the following article and select the best answer. Article: Hong Kong (CNN)--A Dutch artist and designer has come up with a device he hopes will suck pollutants from Beijing's smog-covered skies, creating columns of clean air for residents. An electromagnetic field caused by copper coils will pull small pieces in the smog to the ground where they can be easily cleaned. "It's like when you have a balloon which has electricity and your hair goes toward it.Same with the smog," says artist Daan Roosegaarde.His studio has reached an agreement with the Beijing government to test the technology in one of the capital's parks.With its skies regularly covered by filthy gray smog, Beijing this week announced a series of emergency measures to deal with the problem in public. Roosegaarde says an indoor experiment has already proved it works and he is confident the results--with the help of a team of scientists and engineers--can be copied outside."Beijing is quite good because the smog is quite low. It's in a valley so there's not so much wind.It's a good environment to explore this kind of thing.We'll be able to purify the air and the challenge is to get rid of the smog so you can see the sun again." Roosegaarde acknowledges that projects like this are a way of drawing attention to the problem, rather than a complete solution to Beijing's serious and terrible air pollution."This is not the real answer for smog.The real answer has to do with clean cars, different industry and different lifestyles," he says. However, he hopes the project will make a difference by allowing the city's residents to realize the difference between breathing clean and smog-filled air."I want to take a park in Beijing, 50m by 50m square, and make it the cleanest park in Beijing," he says.He is still discussing with local authorities which park will be used. Roosegaarde's studio has worked on several projects that use static electricity in unusual ways:creating a road that charges electric cars and a floor that generates electricity when danced on. Question: Which of the following is TRUE according to the passage? - Roosegaarde is confident of his project. - Roosegaarde has designed an electric car. - Roosegaarde has made an experiment in a park. - Roosegaarde's experiment has won the support of the public.
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Roosegaarde is confident of his project.

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Read the following article and select the best answer. Article: "Keep out or I'll chase you out! This is my property!" You hear this every spring. It is a long musical sound --- a bird song! Birds use their songs to communicate different messages to one another. People who study bird sounds are learning their meanings. Usually it is the male that sings. Early in spring he sings to say that he has picked out a piece of property. He sings to attract a female of his same kind. Together they will raise a family in his territory . He sings to tell all other birds of his kind to keep out. Each kind of bird has its own type of song. Cardinals sing something that sounds a little like "What cheer, cheer, cheer." Towhees sing, "Drink your tea." Most of the time, birds pay attention only to the songs of birds of their own kind. Cardinals answer cardinals, and song sparrows answer song sparrows. A cardinal knows that a song sparrow will not try to steal its mate. So you can see one reason why a cardinal may chase away another cardinal but will not bother a song sparrow. Most different kinds of birds eat different things. To find enough to eat, a bird needs a big piece of land to search in. Many kinds of birds have some ways of dividing up the land into territories. Song sparrows, cardinals ovenbirds, and white-throated sparrows are some of the birds that have territorial systems. Especially in early spring, birds work out the boundaries between their territories by singing "keep out" threats and by chasing and fighting each other. The birds continue singing to tell females that they have set up territories. Neighboring birds seem to agree that there are make believe fences between their pieces of property. Then they do not have to waste energy chasing each other instead of taking care of their young. Scientists guessed that some birds could recognize their neighbors by small differences in their songs. Two scientists who studied white-throated sparrows found that these birds can even tell the difference between songs of individual birds of their own kind. White-throated sparrows... Question: What is the article mainly about? - How birds build up their territories. - How birds sing to communicate. - How male birds chase after females. - How scientists recognize birds' songs.
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How birds sing to communicate.