Until recently daydreaming was viewed as a waste of time or it {#blank#}1{#/blank#} (consider) an unhealthy escape from real life and its duties．But now some people are taking a fresh look at daydreaming．Some think it may be a very {#blank#}2{#/blank#} (health) thing to do．Some researchers are finding that daydreaming may be important to mental health．Daydreaming, they tell us, {#blank#}3{#/blank#} a good means  of relaxation．But its benefits go{#blank#}4{#/blank#} this．A number of psychologists have conducted experiments and have reached some{#blank#}5{#/blank#} (surprise) conclusion．

    Dr．Joan T．Freyberg has concluded that daydreaming contributes growth．It also improves{#blank#}6{#/blank#} (concentrate),attention span, and the ability to get along with others．Industrialist Henry J．Kaiser believed that much of his success was due{#blank#}7{#/blank#} the positive use of daydreaming．Florence Nightingale dreamed of becoming a nurse．The young Thomas Edison pictured{#blank#}8{#/blank#} as an inventor．

    For these notable achievers, it appears that their daydreams came  {#blank#}9{#/blank#}．Dr Harry Emerson Fosdick offered this advice: “Hold a picture of yourself…in your mind's eye, and you will be drawn toward it．Picture yourself {#blank#}10{#/blank#} (vivid) as defeated and that alone will make victory impossible．

    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.

    Smokejumpers are a special type of firefighter. They jump from planes into areas that are difficult to reach by car or on foot. When they arrive there, they first examine the land and decide {#blank#}1{#/blank#}to fight the fire. Their main goal is to stop a fire from {#blank#}2{#/blank#} (spread). They will use basic equipment to clear land of plants and other dry materials. The work is dangerous, {#blank#}3{#/blank#} they love being able to jump out of planes, fight fires, and live in the forest. As 38-year-old Alexi Tishin, who {#blank#}4{#/blank#} (work) as a smokejumper for 15 years, says, “This is the best job for tough guys.”

    When I was 14 years old, my best friend {#blank#}1{#/blank#} (drag) me to an after-school dance class, {#blank#}2{#/blank#} I enjoyed so much that I have been dancing ever since. After every dance class, however, I always have to stretch out my legs and back! It feels like as much exercise as {#blank#}3{#/blank#} (go) to the gym—but dancing is not {#blank#}4{#/blank#} (wide) considered to be a sport.

    Many dancers would argue that dancing is a sport, as it requires strong muscles and impressive flexibility. No matter what style of dance you are participating in, you will always be using all of {#blank#}5{#/blank#} (you) muscles while dancing and this can often be for several hours a day.

    On {#blank#}6{#/blank#} other hand, many people argue that dance is an art form. Dances often exhibit emotion (情感), tell {#blank#}7{#/blank#} (story), etc. Dancing to music is creative and visually appealing to the eyes and ears, just like watching a play or a(n) {#blank#}8{#/blank#} (profession) band. The shining costumes, the stage make-up and the big hairstyles are artistic and imaginative.

    However, whether you consider dance to be an art {#blank#}9{#/blank#} a sport, the important thing is to enjoy it! Dancing is a great way {#blank#}10{#/blank#} (make) new friends and exercise!

    The polar bear is found in the Arctic Circle and some big land masses as far south as Newfoundland. While they are rare north of 88°, there is evidence {#blank#}1{#/blank#} they range all the way across the Arctic, and as far south as James Bay in Canada. It is difficult to figure out a global population of polar bears as much of the range has been {#blank#}2{#/blank#} (poor) studied; however, biologists calculate that there are about 20,000-25,000 polar bears worldwide.

    Modern methods {#blank#}3{#/blank#} tracking polar bear populations have been employed only since the mid-1980s, and are expensive {#blank#}4{#/blank#} (perform) consistently over a large area. In recent years some Inuit people in Nunavut {#blank#}5{#/blank#} (report) increases in bear sightings around human settlements, leading to a {#blank#}6{#/blank#} (believe) that populations are increasing. Scientists have responded by {#blank#}7{#/blank#} (note) that hungry bears may be congregating (聚集) around human settlements, leading to the illusion (错觉) that populations are {#blank#}8{#/blank#} (high) than they actually are. Of {#blank#}9{#/blank#} nineteen recognized polar bear subpopulations, three are declining, six {#blank#}10{#/blank#} (be) stable, one is increasing, and nine lack enough data.