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.

—No, it's so {#blank#}1{#/blank#} that I cannot even get close to it.

    Last October, while tending her garden in Mora, Sweden, Lena Pahlsson pulled out a handful of small{#blank#}1{#/blank#}(carrot) and was about to throw them away. But something made her look closer, and she noticed a{#blank#}2{#/blank#}(shine) object. Yes, there beneath the leafy top of one tiny carrot was her long-lost wedding ring.

    Pahlsson screamed{#blank#}3{#/blank#}loudly that her daughter came running from the house. "She thought I had hurt{#blank#}4{#/blank#}I)," says Pahlsson.

    Sixteen years{#blank#}5{#/blank#}(early), Pahlsson had removed the diamond ring{#blank#}6{#/blank#}(cook) a meal. When she wanted to put the ring back on later, it was gone. She suspected that one of her three daughters — then ten, eight, and six — had picked it up, but the girls said they hadn't. Pahlsson and her husband{#blank#}7{#/blank#}(search) the kitchen, checking every corner, but turned up nothing. "I gave up hope of finding my ring again," she says. She never replaced it.

    Pahlsson and her husband now think the ring probably got{#blank#}8{#/blank#}(sweep) into a pile of kitchen rubbish and was spread over the garden{#blank#}9{#/blank#}it remained until the carrot's leafy top accidentally sprouted (生长) through it. For Pahlsson, its return was{#blank#}10{#/blank#}wonder.

    Colin Powell, a US statesman, once said: “A dream doesn't become reality through magic; it {#blank#}1{#/blank#}(take) hard work.” And in Chinese culture, nothing says more about hard work {#blank#}2{#/blank#} the phrase “Ju Gong Jin Cui (鞠躬尽瘁)”.

    The phrase came from the Three Kingdoms period (AD220 — 280), during which the country was divided{#blank#}3{#/blank#}three kingdoms—Wei, Shu, and Wu, each of {#blank#}4{#/blank#} leaders wanted to take power and unite China as one. Liu Bei, the leader of Shu, suddenly {#blank#}5{#/blank#} (die) in an important battle.{#blank#}6{#/blank#} (fortunate), his young son Liu Shan had Zhuge Liang {#blank#}7{#/blank#} (depend) on. He promised he would devote {#blank#}8{#/blank#}(he) to a stronger Shu.

    The phrase came from an article of Zhuge Liang. From then on, it has been used to describe a person with {#blank#}9{#/blank#} great mind and spirit, who works his whole life to make the dream into {#blank#}10{#/blank#} (real).

    Last weekend our school held a sports meeting. {#blank#}1{#/blank#} (realize) it was our last high school sports meeting, we decided to make it {#blank#}2{#/blank#} unforgettable experience for all of us.

    We first attended the opening parade, for {#blank#}3{#/blank#} our class had made a lot of {#blank#}4{#/blank#}(prepare).

    {#blank#}5{#/blank#} our excitement, our parade performance was a great success. After the parade, the games started. My classmates attended {#blank#}6{#/blank#} (vary) events such as running, high jump and long jump. Due to the hard training they {#blank#}7{#/blank#} (do) before, their performances were very {#blank#}8{#/blank#} (impress).

    My classmates applauded and cheered for the athletes, some raising their cameras to capture the exciting moments. Finally, the result {#blank#}9{#/blank#} (announce). {#blank#}10{#/blank#} was amazing that our class won the second place. Our efforts paid off! Cup in hand, we took a picture together. I believe this sports meeting will remain a precious memory for all of us as time goes by.

    Why is pink or purple a color for girls and blue or brown for boys?

The answer depends largely {#blank#}1{#/blank#}cultural values as well as personal experiences. To the Egyptians, green was a color {#blank#}2{#/blank#} represented the hope and joy of spring, while for Muslims, it means heaven. Red is a symbol of good luck in many cultures. During the Spring Festival in China, children {#blank#}3{#/blank#} (give) money in a red envelope to bring good fortune in the New Year. For many nations, blue is a symbol of protection and religious beliefs. Greek people often wear a blue necklace hoping to protect{#blank#}4{#/blank#}against evils（灾祸）.

People's {#blank#}5{#/blank#} (choose) of colors is also influenced by their bodies' reactions toward them. Green is said to be {#blank#}6{#/blank#} most restful color. It has the ability to reduce pain and relax people both mentally{#blank#}7{#/blank#}physically. People {#blank#}8{#/blank#}(work) in green environment have been found to have fewer stomach aches.

Red can cause a person's blood pressure to rise and increase people's appetites（食欲）. Many decorators will include different shades of red in the restaurant. And many commercial websites will have a red "Buy Now" button because red is a color that {#blank#}9{#/blank#}(easy) catches a person's eye.

Blue is another calming color. Unlike red, blue is believed to cause people to lose appetite. So {#blank#}10{#/blank#} you want to eat less, some suggest that eating from blue plates can help.