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.

    Wing Chun Kung Fu (咏春拳) is {#blank#}1{#/blank#} excellent hobby for children and assuring(令人放心的) for parents concerned about their safety. It is easy to learn and{#blank#}2{#/blank#}(extreme) practical. It offers smaller people the ability to overcome larger attackers because the movements are based on skill rather than size or strength.

    The International Wing Chun Academy {#blank#}3{#/blank#} (teach) children in Australia since 1973. Our Little Dragons classes for children{#blank#}4{#/blank#} (age) from five to thirteen are safe and fun. Children can quickly learn the skills to notice and avoid dangerous situations when{#blank#}5{#/blank#} can find no one for help. To leach children{#blank#}6{#/blank#} to escape from a threatening situation without using violence is one of the Academy's {#blank#}7{#/blank#} (aim).

    Wing Chun Kung Fu helps build students'{#blank#}8{#/blank#} (confident) and helps build character,{#blank#}9{#/blank#} (make) it an ideal interest for shy children. Learning Wing Chun Kung Fu is a positive step on the road {#blank#}10{#/blank#} a healthy and active lifestyle.

    Although he is only eleven years old, James helps the aged. Every day, he goes to Redhill {#blank#}1{#/blank#} train to help three old people with housework and shopping. In this way, he has made their lives much easier. It is through James' hard work that a Neighbourhood Care Program has been started. So far, James and his friends {#blank#}2{#/blank#} (form) a group of young volunteers to seek out the people {#blank#}3{#/blank#} need help. They do this without funding and without recognition. Their main aim is {#blank#}4{#/blank#} (make) a difference through personal sacrifice.

    Why do different people like different colors? The answer depends largely {#blank#}1{#/blank#} cultural values. To the Egyptians, green is a color {#blank#}2{#/blank#} stands for 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#}(they) against evils.

    People's {#blank#}5{#/blank#}(choose) of colors is also affected by their bodies' reactions toward them. Green is said to be the most restful color. It has the ability to reduce pain and relax people both mentally {#blank#}6{#/blank#} physically. When {#blank#}7{#/blank#}(work) in green environment, people have fewer stomach aches. Red can make a person's blood pressure {#blank#}8{#/blank#}(rise) and increase people's appetite. 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. Unlike red, blue is believed to cause people to lose appetite. Therefore, {#blank#}10{#/blank#} you want to eat less, eating from blue plates can help.

    The other day my father drove me to school as usual. When we arrived it began to rain {#blank#}1{#/blank#}(heavy) but we only had one raincoat. My father insisted I {#blank#}2{#/blank#}(wear) it. Even though I would rather my father {#blank#}3{#/blank#}(put) it on, I didn't insist because I knew it would put him in a bad temper. Anyway, I did my best to use my raincoat to prevent him {#blank#}4{#/blank#}(get) wet. I was so moved by his sacrifice that I cried.

    The rain reminded me {#blank#}5{#/blank#} how much my father loved me. When I was in primary school, I {#blank#}6{#/blank#}(perform) poorly in tests but my father always encouraged me. Sometimes I want to join clubs or go on school trips. He always supports me since he thinks such activities are beneficial to me, {#blank#}7{#/blank#} I can {#blank#}8{#/blank#}(broad) my horizons.

    Though I love my father, I am at {#blank#}9{#/blank#} loss how to show it. Many students have the same problem. We love and care for our parents, but we don't know {#blank#}10{#/blank#}we can do to help them.