Arriving in Sydney on his own from India, my husband, Rashid, stayed in a hotel for a short time while looking for a house for me and our children.

    During the first week of his stay, he went out one day to do some shopping. He came back in the late afternoon to discover that his suitcase was gone. He was extremely worried as the suitcase had all his important papers, including his passport.

    He reported the case to the police and then sat there, lost and lonely in the strange city, thinking of the terrible troubles of getting all the paperwork organized again from a faraway country while trying to settle down in a new one.

    Late in the evening, the phone rang. It was a stranger. He was trying to pronounce my husband's name and was asking him a lot of questions. Then he said they had found a pile(堆) of papers in their trash can(垃圾桶) that had been left out on the footpath.

    My husband rushed to their home to find a kind family holding all his papers and documents(文件). Their young daughter had gone to the trash can and found a pile of unfamiliar(不熟悉的) papers. Her parents had carefully sorted them out, although they had found mainly foreign addresses on most of the documents. At last they had seen a half-written letter in the pile in which my husband had given his new telephone number to a friend.

    That family not only restored the important documents to us that day but also restored our faith and trust in people. We still remember their kindness and often send a warm wish their way.

阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

    Last month, it was my first time to have a bus tour for sightseeing(观光) in Hong Kong. It's really pleasant and interesting. Sitting on the second floor of the bus, I visited Hong Kong in a different way. When the bus passed along the street, all the buildings along the way seemed very close to me. I bought a one­ day pass priced around US $6 to enjoy unlimited (不受限制的) rides on two important routes. I started the trip from Central Star Ferry, and took the H1 Heritage Route (遗产路线) to travel around the Central and Western District. After leaving Star Ferry, the bus passed Western Market and Hollywood Road, where the famous antique (古董) shops are located, then Man Mo Temple. Not only could I see on the bus, I also got off at many stops. I got off in Man Mo Temple and walked along Lascar Row. Then, I got on the sightseeing bus to Dr Sun Yat­sen Museum, which was built in 1914 to honor the father of the Republic of China. And the famous Hong Kong University left a good impression on me. After traveling back through the dried seafood shops without stopping, I went to the last stop at Star Ferry.

    After the heritage journey, I took the H2 Metropolis Route for my shopping tour. I left from Star Ferry and traveled through Wanchai to Causeway Bay and Times Square for shopping. Having bought a lot of things, I went back.

    Though tired, I did have lots of fun on my one­ day bus tour!

    While your pet fish may appear to be unaware of your presence, chances are that it knows you extremely well and can probably even identify you from a crowd of human faces!

    To test if this was accurate, some scientists decided to study archerfish（喷水鱼）. These animals don't have a sophisticated（复杂的）brain that is necessary to recognize the slight differences between human facial features.

    They began by presenting four archerfish with images of two human faces. Initially, the fish spit at both. However, they soon learned spitting water at the one selected by the researchers earned them a food treat. After that, they focused primarily on that image. The researchers then took the experiment one step further by introducing 44 other human faces to the mix.

    To the researcher's astonishment, the trained archerfish were able to recall the learned image almost 81% of the time. And this accuracy improved to 86% when the researchers made the identification even harder, by replacing the colored photos with a set of black and white images and hiding the shape of the head.

    The results of the study suggest that though having tiny brains, archerfish may have developed high visual discrimination abilities. While it is contrary to the previous theory that a sophisticated brain is necessary to recognize human faces, the researchers believe they do not recognize faces by recalling complex facial information like gender and identity, but more likely by discriminating between detailed  patterns. Even so, the fact that these archerfish could “remember” those faces demonstrates that they have an impressive memory for details that lasts much longer than the originally-thought 3 seconds!

    This is not the first time researchers have realized how “smart” fish are. Previous studies have shown that fish can recognize those fish they have “socialized” with previously, and even recall complex three-dimensional maps of their surroundings.

    The human brain remembers negative experiences more easily than positive ones. Our brains have developed this way because threats, like dangerous animals, had a more immediate effect on our ancestors' survival compared to positive things like food or shelter. As a result, you likely know what makes you unhappy, but do you know what makes you happy?

    Research suggests that our level of happiness depends partly on factors we cannot control—our genes and our life circumstances. But our level of happiness is also shaped by the choices we make. If you've been chasing wealth, fame, good looks, material things and power, you may be looking for happiness in all the wrong places. Psychologists suggest that the following habits make people happier.

    People who form close relationships tend to be happier than those who do not. The number of friends we have is not important. What matters is the quality of our relationships. Relationships that bring happiness usually involve the sharing of feelings, mutual respect, acceptance, trust and fun.

    People who exercise regularly improve both their physical and mental well being. Some research has shown that exercise can be as effective as medication in treating depression.

    When we are so interested in an activity we enjoy that we lose track of time, we are in a state of flow. The activity could be making art, playing piano, surfing, or playing a game. People who experience flow in their work or hobbies tend to be happier.

    People are more likely to be happy if they know what their strengths are and use them regularly, People who set goals and use their strengths to achieve them tend to be happier. People are especially happy when they can use their strengths to serve the greater good.

    People who think positively by being grateful, mindful and optimistic are more likely to be happy. Being grateful means being thankful, Bejing mindful means being open to, focusing on and enjoying the experiences of the present moment. Being optimistic means being hopeful about the future.

    In earliest times, men considered lightning to be one of the great mysteries (神秘的事物)of nature. Some ancient peoples believed that lightning and thunder were the weapons (武器) of the gods.

    In reality, lightning is a flow of electricity formed high above the earth. A single flash of lightning 1.6 kilometres long has enough electricity to light one million light bulbs (灯泡).

    The American scientist and statesman, Benjamin Franklin, was the first to show the connection between electricity and lightning in 1752. In the same year he also built the first lightning rod (避雷针). This device (装置物) protects buildings from being damaged by lightning.

    Modern science has discovered that one stroke (闪击) of lightning has a voltage (电压) of more than 15 million volts (伏特). A flash of lightning between a cloud and the earth may be as long as 13 kilometers, and travel at a speed of 30 million meters per second.

    Scientists judge that there are about 2,000 million flashes of lightning per year. Lightning hits the Empire State Building in New York City 30 to 48 times a year. In the United States alone it kills an average (平均数) of one person every day.

    The safest place to be in case of an electrical storm is in a closed car. Outside, one should go to low ground and not get under tress. Also, one should stay out of water and away from metal fences. Inside a house, people should avoid open doorways and windows and not touch wires or metal things.

    With lightning, it is better to be safe than sorry?

Sullivan calls her right arm her "little arm". The 10-year-old was born with that arm less than half the 1 size. She has no elbow and tiny fingers to 2 things. However, it never discouraged her. This 3 kid could always find a way to make that little arm 4 for her. Until recently, riding a bike has proved out of her reach. But that might soon change 5 some college students.

Sullivan's grandparents saw a local news about Siena College students making a prosthetic (假肢的) hand for a little girl using the school's 3D printer. They went to see if her granddaughter could be a 6 for a new arm like that girl. However, there was a 7 when the grandparents asked if the college group could help Sullivan, as the design was for limbs (肢体) 8 an elbow or wrist.

Fortunately, Kristin, a junior engineering major said yes. She and her team couldn't 9 a perfect solution, but they promised to try. They met Sullivan from time to time to measure and test the design, 10 the initial plans to fit Sullivan's little arm. They've worked for almost a year to build Sullivan a solution. The task has been one of 11 and creativity,12 by kindness. "Sometimes you get 13 , but she is so excited," Kristin said. "Her motivation and her strength, 14 our team along."

On May 4, Sullivan received her arm. She also received a(n) 15 surprise: a new bike.