One morning，I was waiting at the bus stop，worried about{#blank#}1{#/blank#}  (be) late for school.

    There were many people waiting there， {#blank#}2{#/blank#}   some of them looked very anxious and{#blank#}3{#/blank#} (disappoint)．When the bus finally came，we all hurried on board.I got a place next{#blank#}4{#/blank#} the window，so I had a good view of the sidewalk.A boy on a bike{#blank#}5{#/blank#} (catch) my attention.He was riding beside the bus and waving his arms.I heard a passenger behind me shouting to the driver，but he refused{#blank#}6{#/blank#}  (stop) until we reached the next stop.Still，the boy kept{#blank#}7{#/blank#}  (ride)．He was carrying something over his shoulder and shouting.Finally，when we came to the next stop，the boy ran up to the door of the bus.I heard an exciting conversation.Then the driver stood up and asked，“{#blank#}8{#/blank#}  anyone lose a suitcase at the last stop？”A woman on the bus shouted，“Oh，dear！It's {#blank#}9{#/blank#} ．”She pushed her ways to the driver and took the suitcase thankfully.Everyone on the bus began talking about what the boy had done，and the crowd of strangers{#blank#}10{#/blank#} (sudden) became friendly to one another.

    Why do some people eat too much? Is it because they're hungry? Or is there a scientific{#blank#}1{#/blank#}(explain)?

    There are a number of theories to account{#blank#}2{#/blank#}overeating. One factor depends on the time of day. “It's all part of a routine,” says Randy Seeley,{#blank#}3{#/blank#}professor of psychiatry in Cincinnati. “You're hungry at noon because that's the time you{#blank#}4{#/blank#}(eat)lunch for the past 100 days.” Another reason we may eat more than necessary is that the body needs to satisfy a salt and sugar balance. Drinking alcohol also increases appetite, because the body wants something {#blank#}5{#/blank#}(absorb) the alcohol.

    {#blank#}6{#/blank#}(basic), overeating can also be a question of more biological factors. For instance, your body temperature can tell your brain that you feel hungry. “Your body temperature{#blank#}7{#/blank#}(drop) when it's time to eat, and eating warms you up,” says Gina Harlow, a paediatrics professor at Harvard University. Also, the smell of certain foods can make us imagine subconsciously the pleasure of eating{#blank#}8{#/blank#}. Harlow adds, “If you know you love French fires,{#blank#}9{#/blank#} (smell)them will make you want to eat them because you know how good they are,{#blank#}10{#/blank#}can lead to eating too many.”

    So, the next time you realize you've eaten too much, don't worry about it. You can always blame it on science.

    Once a man's wife adopted a dog. The woman loved the dog so much that she spent plenty of time playing {#blank#}1{#/blank#}  him. It was obvious to the man {#blank#}2{#/blank#}his wife preferred the dog. With time going by, the man disliked the dog more and more.

    Finally, the man made a  {#blank#}3{#/blank#}(decide) to abandon the dog. So one day he drove the dog {#blank#}4{#/blank#}  (mile) away from his home. He threw the dog in the woods and then returned to his car.  {#blank#}5{#/blank#}  soon after the car was started, it broke down. Feeling cold in the car, the man became  {#blank#}6{#/blank#}  (worry). He  needed some help, but{#blank#}7{#/blank#}cars appeared and he could see no one nearby. Then he saw the dog {#blank#}8{#/blank#} (walk) towards him. The dog stopped by the car and barked. The man opened the car and let him in. The dog sat beside {#blank#}9{#/blank#} and kept the man warm. At last, a car came and the man {#blank#}10{#/blank#} (save). He went back home, with the dog, of course.

    I wanted to do something special for my 15－year－old son, who has always been a perfect boy. He worked all summer to earn enough money to buy {#blank#}1{#/blank#} (he) a new racing －bicycle instead of asking for money from me. Then he spent hours and hours on it. I loved my son so much {#blank#}2{#/blank#} I bought him a pair of sunglasses and gloves. When my son rode the racing-bicycle with them, he looked very cool. He dreamed {#blank#}3{#/blank#} taking part in a race and winning. On November 10th, my birthday, when I went to the kitchen to start the milk and bread in the morning, I found {#blank#}4{#/blank#} beautiful guitar on the table, beside which was a card,{#blank#}5{#/blank#} (say), “Happy birthday to my wonderful mother.” I was surprised and then began to sob. I remembered once I {#blank#}6{#/blank#}(joke) to my family that I wanted to learn playing the guitar to make my life colorful. I had {#blank#}7{#/blank#} (forget) it, but my son remembered. He took it {#blank#}8{#/blank#} (serious), and bought me one as a birthday gift. When I wondered {#blank#}9{#/blank#}my son could buy this expensive gift, soon I realized that my son had sold his racing-bicycle{#blank#}10{#/blank#} (get) me the guitar.

    Which is the most significant classical Chinese painting? According to Paul Denlinger, {#blank#}1{#/blank#} visited China many times when young, it should be Along the River During the Qingming Festival. This {#blank#}2{#/blank#} (create) dates back to the Northern Song Dynasty.

    This painting is important {#blank#}3{#/blank#} several reasons. First, up until this time, almost all Chinese paintings are landscapes, {#blank#}4{#/blank#} (contain) no or only a few images of people. Second, this is the first scroll (卷轴) painting {#blank#}5{#/blank#} (describe) both Chinese urban and suburban life during the period in the capital, Bianjing, Third, the painting is {#blank#}6{#/blank#} (high) detailed and features shops of all kinds and different economic activities in and out of the city. People are able to see the Chinese technology of the time, which helps them {#blank#}7{#/blank#} great deal in understanding {#blank#}8{#/blank#}the Chinese lived.

    The Beijing Palace Museum keeps the {#blank#}9{#/blank#} (origin) Song painting and one of its famous copies——the Qing version {#blank#}10{#/blank#} (hold) in the National Palace Museum in Taipei.

    Why do many of us find {#blank#}1{#/blank#} difficult or impossible to fall asleep in a bed other than our own? Is it because the bed is {#blank#}2{#/blank#} (comfort)? According to a new study published in Current Biology, a significant reason is {#blank#}3{#/blank#} the scientists call "first night effect". They believe that one side of the brain acts as a "night watch" to warn us about potential dangers. It forces us {#blank#}4{#/blank#} (stay) awake on the first night in a new environment.

    For the study, 35 young volunteers {#blank#}5{#/blank#} (ask) to sleep in a sleep lab for several days. Meanwhile, researchers watched their brain activities.

    According to the researchers, on their first night, the left brains were {#blank#}6{#/blank#} (active) than the right brains and people had a hard time sleeping. However, left-brain activity decreased as days went by, {#blank#}7{#/blank#} (fall) even to the point of complete calm. In this process, the participants got an increasingly better sleep experience.

    The {#blank#}8{#/blank#} (finding) suggest that the different rhythms of the sides of the brain affect our sleep. When the two sides work {#blank#}9{#/blank#} (different), the balance between them is broken. Thus, the brain can't relax and is sensitive to anything strange in the surroundings, just {#blank#}10{#/blank#} it is in the daytime.