Researchers from the University of Michigan have found that astronauts' brains change shape during spaceflight. It is the first study {#blank#}1{#/blank#} (look) into how the brain changes in space. Researchers looked at high-tech MRI(磁共振成像)pictures of the brains of 26 astronauts who spent time in space. Twelve of the {#blank#}2{#/blank#} (astronaut) spent two weeks on the Space Shuttle, and 14 spent six months on the International Space Station. All of them {#blank#}3{#/blank#} (experience) increases and decreases in the size of {#blank#}4{#/blank#} (differ) parts of the brain. The longer an astronaut spent in space ,the {#blank#}5{#/blank#} (big) the size differences were.

    The research produced some {#blank#}6{#/blank#} (interest) findings. One was that on gravity means fluids do not drop in the body, {#blank#}7{#/blank#} there is a shift in the brain's position inside the skull. The brain becomes either smaller or bigger. The findings could help doctors to treat problems that affect the brain's function. They could treat people with problems {#blank#}8{#/blank#} (cause)by long-term bed rest. They could also help those who have a build-up of fluid in the brain, which can lead {#blank#}9{#/blank#} brain damage. We will understand more about {#blank#}10{#/blank#} neurons(神经元)in the brain connect. The findings will also help future trips to Mars.

    Once there was a cowboy, Niulang,{#blank#}1{#/blank#}lived with his elder brother and sister-in-law. But she disliked and abused him, and the boy was forced {#blank#}2{#/blank#} (leave) home with only an old cow for company.

    The cow, however, was a former god who had broken royal rules and {#blank#}3{#/blank#} (send) to earth in bovine（牛的）form.

    One day the cow led Niulang{#blank#}4{#/blank#}a lake where fairies took a bath on earth. Among them was Zhinu{#blank#}5{#/blank#}most beautiful fairy and a skilled woman tailor.

    The two fell in love at first sight and were soon married. They had a son and a daughter and their happy life was held up as an example for hundreds of {#blank#}6{#/blank#} (year) in China. Yet in the eyes of the Jade Emperor, the Supreme Deity in Taoism, marriage between a mortal and fairy was{#blank#}7{#/blank#}(strict) forbidden. He ordered the heaven troop to catch Zhinu back.

    Niulang grew desperate when he discovered Zhinu had been taken back to heaven{#blank#}8{#/blank#} (drive) by Niulang's misery, the cow told him to turn its hide into a pair of shoes after it died. The magic shoes whisked（匆匆带走）Niulang,{#blank#}9{#/blank#} (carry) his two children in baskets strung from a shoulder pole, off on a chase after the empress. Even the Jade Emperor was touched, and allowed Niulang and Zhinu to meet once a year on the{#blank#}10{#/blank#} (seven) night of the seventh month.

    Mr. James owns a company. He put an advertisement {#blank#}1{#/blank#}a newspaper for a boy to work in his office. Out of nearly fifty people {#blank#}2{#/blank#}came to apply, the man selected one and dismissed {#blank#}3{#/blank#}others.

    “I would like to know,” said a friend, “the reason you preferred that boy, who brought neither a single letter, {#blank#}4{#/blank#}a single recommendation.”

    “You are wrong,” said the gentlemen. “He had many. He wiped his feet at the door and closed the door behind him, {#blank#}5{#/blank#}(mean) that he was careful. He gave his seat immediately to an old man, showing that he was kind and {#blank#}6{#/blank#}(thought). He took off his cap when he came in and answered my questions quickly, showing that he was a polite gentleman. Everyone else stepped over the book that I {#blank#}7{#/blank#}(put) on the floor purposely. He picked {#blank#}8{#/blank#}up and placed it on the table, and he waited quietly for his turn instead of pushing and crowding. When I talked to him, I {#blank#}9{#/blank#}(notice) his tidy clothing, his neatly brushed hair, and his clean finger mails. Can't you see that these are excellent recommendations? I considered them to be more significant than {#blank#}10{#/blank#}(letter).”

    Hearing the words, the friend nodded in agreement.

    Christopher Reeve was born in September, 1952. He was in his first school play {#blank#}1{#/blank#} he was eight and he started to act in TV shows and films while he was still in college. He made many {#blank#}2{#/blank#} (success) films and TV shows but he is most famous {#blank#}3{#/blank#} his Superman films. {#blank#}4{#/blank#} (lucky) , disaster (灾难) came in 1995 when he fell from his horse and {#blank#}5{#/blank#} (break) his back. The doctors did not expect him to live. However, he made {#blank#}6{#/blank#} (amaze) progress. At first, he couldn't breathe without a machine, but he learnt to breathe on {#blank#}7{#/blank#} (he)own. He would never walk again but he started {#blank#}8{#/blank#} new life with great courage. The second year after his accident, Christopher returned to film making. He also raised a lot of money {#blank#}9{#/blank#} (promote) medical research into back injuries. He made speeches all over the USA about his experiences. This not only drew public attention to research into back injuries but also encouraged a lot of people {#blank#}10{#/blank#} (live) with all kinds of problems.