Do you want to have a nice place to spend your weekend？Here are some places for you ,which are probably a mere walk away from your college.

King's Art Centre

    A day at the Centre could mean a visit to an exhibition of the work of one of the most interesting contemporary artists on show anywhere. This weekend sees the opening of an exhibition of four local artists.

    You could attend a class teaching you how to 'learn from the masters' or get more creative with paint—free of charge.

    The Centre also runs two life drawing classes for which there is a small fee.

The Botanic Garden

    The Garden has over 8,000 plant species；it holds the research and teaching collection of living plants for Cambridge University.

    The multi­branched Torch Aloe here is impressive. The African plant produces red flowers above blue­green leaves，and is not one to miss.

    Get to the display house to see Dionaea muscipula，a plant more commonly known as the Venus Flytrap that feeds on insects and other small animals.

    The Garden is also a place for wildlife ­enthusiasts. Look for grass snakes in the lake. A snake called 'Hissing Sid' is regularly seen lying in the heat of the warm sun.

Byron's Pool

    Many stories surround Lord Byron's time as a student of Cambridge University. Arriving in 1805，he wrote a letter complaining that it was a place of “mess and drunkenness”．However，it seems as though Byron did manage to pass the time pleasantly enough. I'm not just talking about the pet bear he kept in his rooms.He spent a great deal of time walking in the village.

    It is also said that on occasion Byron swam naked by moonlight in the lake，which is now known as Byron's Pool. A couple of miles past Grantchester in the south Cambridgeshire countryside，the pool is surrounded by beautiful circular paths around the fields. The cries of invisible birds make the trip a lovely experience and on the way home you can drop into the village for afternoon tea. If you don't trust me，then perhaps you'll take it from Virginia Woolf—over a century after Byron，she reportedly took a trip to swim in the same pool.

根据短文内容，选择最佳答案，并将选定答案的字母标号填在题前括号内。

For some people, music is no fun at all. About four percent of the population is what scientists call "amusic." People who are amusic are born without the ability to recognize or reproduce musical notes (音调). Amusic people often cannot tell the difference between two songs. Amusics can only hear the difference between two notes if they are very far apart on the musical scale.

As a result, songs sound like noise to an amusic. Many amusics compare the sound of music to pieces of metal hitting each other. Life can be hard for amusics. Their inability to enjoy music set them apart from others. It can be difficult for other people to identify with their condition. In fact, most people cannot begin to grasp what it feels like to be amusic. Just going to a restaurant or a shopping mall can be uncomfortable or even painful. That is why many amusics intentionally stay away from places where there is music. However, this can result in withdrawal and social isolation. "I used to hate parties," says Margaret, a seventy-year-old woman who only recently discovered that she was amusic. By studying people like Margaret, scientists are finally learning how to identify this unusual condition.

Scientists say that the brains of amusics are different from the brains of people who can appreciate music. The difference is complex, and it doesn't involve defective hearing. Amusics can understand other nonmusical sounds well. They also have no problems understanding ordinary speech. Scientists compare amusics to people who just can't see certain colors.

Many amusics are happy when their condition is finally diagnosed (诊断). For years, Margaret felt embarrassed about her problem with music. Now she knows that she is not alone. There is a name for her condition. That makes it easier for her to explain. "When people invite me to a concert, I just say, ‘No thanks, I'm amusic,'" says Margaret. "I just wish I had learned to say that when I was seventeen and not seventy." (335 words)

    There are a lot of reasons why people calling 911 might not be able to tell operators which floor they're on in a high-rise building. They could be injured or simply confused. Yet precious minutes are wasted when emergency personnel have to search a building to find a person in need. With a new app called Sensory, emergency responders soon may be able to use a caller's smartphone to locate his exact position in a building.

    Columbia University researchers William Falcon and Henning Schulzrinne created Sensory using a two-step process. First, they used all existing smartphone features that help narrow down a caller's location. All iPhones produced after 2014 already include GPS and altimeter（测高仪） that can help emergency responders determine if a person is outdoors or inside a building. But when it comes to tall buildings, just knowing a person's altitude may not be enough，because the distance between floors changes from one building to another.

    So Falcon and Schulzrinne analysed the plans of figuring out the average distance between floors in residential（住宅的）buildings and office buildings among more than 1000 buildings in New York City. They tested their app in 63 experiments in five high-rise buildings and found that it could find a caller's location within two floors with about a 91 percent accuracy.

    In a survey conducted by Find Me 911 this year, dispatchers（调度员）said that they regularly received calls from people in need who often couldn't share their location. They sometimes accidentally give the wrong address or floor number. Some callers are too young to know their address. Dispatchers also received calls from those who are deaf or have hearing problems and they often couldn't hear the operator's questions.

    The new Sensory app could help shave precious minutes off the time it takes first responders to get to those calling for help. And it could make the difference between life and death.

    This year's flu season is pretty scary. To try to minimize the effects, public officials are still urging anyone who hasn't yet gotten their flu shot to get one as soon as possible. However, even if every single person got a shot in the arm, the vaccine(疫苗)—with its excellent 36 percent effectiveness—would not prevent everyone from getting infected with the annoying virus. Knowledge is power, so here's what goes on in your body when you come down with the flu.

    The influenza virus primarily attacks your nose, throat, and the tubes that lead to your lungs. But the flu is so much more than that. Your muscles ache, your head hurts, and your appetite goes down, among other things. To our surprise, almost all of these symptoms have less to do with the virus itself than with your immune(免疫的)response to them. Unfortunately, the very defense you have in place to get rid of the flu is the reason you feel so painful when you recover.

    The virus usually enters through your mouth, typically by way of your hands But it takes a few days for symptoms to set in. While this process might cause some harm to your nose and throat, it's nothing major, and nothing like the symptoms that typically accompany a bad or even mild case of the flu.

    The real fun starts when your immune system begins to fight. Your immune system comes in two parts: the innate system and the adaptive. The innate immune system is essentially an all-purpose tool. As soon as your body senses the presence of any injury or invader (入侵者), the innate immune system launches into action by producing tiny proteins called cytokines and chemokines. The cytokines reproduce almost immediately and start to attack the virus. This increase in immune cells creates an serious inflammation(炎症) throughout the body. But the worst is still to come. Meanwhile, the chemokines work with the adaptive immune system to help create T cells. These cells are a special type of white blood cell that works in a much more specific way: They find the influenza virus, identify what's special about it, and create something unique on their surface that finds and destroys similar invaders.

    It is one of the oldest magic tricks in the book—a magician locks a woman in a box, with her head and feet sticking out from either end, and saws (锯) it in half. But when she finally jumps out of the box, the woman is unharmed.

    This trick was introduced nearly a century ago. It has been around for some time, but it never goes wrong. Why is it so successful? The answer is simple: the human mind is easily fooled.

    Our brain processes the world around us based on information that sensory organs, including the eyes, pick up. For instance, when we see a cow or a horse standing behind a tree, we automatically “fill in” the part of the animal's body that is hidden from our sight. “So the brain is taking this kind of very sparse (匮乏的) information about the world and it's generating this rich world by filling in information,” Stephen Macknik, a scientist at the Barrow Neurological Institute in Arizona, US, told Science magazine.

    But since our brains are filling in the gaps, sometimes they get it wrong. They tend to be driven by our previous experiences and we expect things to go as they have in the past even if sometimes they do not.

    This tendency explains magicians' success in fooling people with well-known coin tricks. For example, when you see a magician throw a coin up and down in one hand and then fake a coin thrown to the other hand, you would naturally believe that the coin is in the other hand.

Apart from the information gaps, magicians also use the “blind spots” theory when doing their shows.

    The most well-known experiment demonstrating this theory is called the “invisible gorilla (大猩猩)”, in which volunteers watch a video of two basketball teams. They are asked to count how many times the teams wearing white shirts pass the ball. In the meantime, a person dressed as a gorilla walks onto the court. But shockingly, half of the viewers don't notice the gorilla, even when they appear to be looking directly at it.

    Magicians employ this tactic (招数), what they call “misdirection”, in almost every one of their acts. They direct our attention somewhere else using comedy and music, which can make us miss stuff during the performance.

    When men get together, they seldom talk about their feelings or inner thoughts. However, they talk about a lot, like their newest computer, how to repair their car, or even business.

    Talk might move to the best place to find fish or women, jump to computer games, then continue to the sport of the season. They also like to tell jokes each other and spend a fair amount of time playing one-up and boasting (吹牛). Men seldom call each other to chat.

    When man meets woman, he usually wants to make a good impression. Many single men try hard to carry on amusing, fun, and pleasant conversations. They use conversation to discover her interests and feelings in order to learn how to be attractive to her.

    Some men, either out of nervousness or ignorance, spend most of the time talking about themselves, often appearing to brag about their achievements or talk endlessly about their problems or work. Even the quietest man talks to his woman when love is new.

    When women get together, they talk about feelings and relationships, their work and their family. They enjoy talking but also want the give and take of talk, then listen. Women often call each other to chat. Conversation is an important part of most women's 1ives.

    As relationships progress, however, many a man turns on the television and forgets how to talk. This raises anger and cry from his woman partner who says, “You never talk to me anymore.” Some men start talking. Many, however, mainly discuss their own achievements and problems.

    When the woman starts talking about her favorite subjects: feelings, family, relationships, friends and her work, many men lose interest or bring the conversation back to themselves. Pretty soon, the man is back to staring at the television each night, wondering where his relationship has gone. The woman is talking to her friends, mom, sister, or neighbor, often about that very relationship and how she is hurting.