The adobe dwellings (土坯房)  {#blank#}1{#/blank#}  （build）by the Pueblo Indians of the AmericanSouthwest are admired by even  {#blank#}2{#/blank#} most modern of architects and engineers. In addition to their simple beauty, what makes the adobe dwellings admirable is their  {#blank#}3{#/blank#} (able) to “air condition” a house without  {#blank#}4{#/blank#}( use) electric equipment. Walls made of adobe take in the heat from the sun on hot days and give out that heat   {#blank#}5{#/blank#}( slow) during cool nights, thus warming the house. When a new day breaks, the walls have given up their heat and are now cold enough  {#blank#}6{#/blank#}(cool) the house during the hot day;{#blank#}7{#/blank#} the same time, they warm up again for the night. This cycle       (go) day after day: The walls warm up during the day and cool off during the night and are thus always a timely offset(抵消) for the outside temperatures. As {#blank#}9{#/blank#}  (nature) architects, the Pueblo Indians figured out exactly {#blank#}10{#/blank#}  thick the adobe walls needed to be to make the cycle work on most days.

    Each summer in the late 1960s，my two sisters and I would take the bus from Arizona to Arkansas to stay with our father.A World War Ⅱ soldier，Dad had many medical problems，any one of {#blank#}1{#/blank#}  could cause many people to lose more than their sense of humor，but not him.

    I have memories of Dad waking us{#blank#}2{#/blank#}  in the morning.He had lost his legs in the war，so it was the wheelchair that kept him {#blank#}3{#/blank#}  (move) around.Holding his cane，which was his{#blank#}4{#/blank#}  (extend) arm，he would roll through the house{#blank#}5{#/blank#} (shout)，“Up，up，up! Get up and face the day! It's a beautiful day！” If we didn't get up right away，he would hit the end of our beds with his cane.

Once when we {#blank#}6{#/blank#} (be) in a store，he found the three of us in the makeup department.When he was {#blank#}7{#/blank#} (tell) that we wanted to buy some makeup，he picked up a bottle and started reading the label out loud.“‘Leaves your skin soft and silky from head to toe.' Well，that leaves half of me out，” he said，laughing {#blank#}8{#/blank#} (delight)．We had to laugh，too.He had a talent for {#blank#}9{#/blank#} (find) humor in everything he did.

    Our father has been gone for a long time now，{#blank#}10{#/blank#}  we still remember the lesson that he taught us：You are only as disabled as you let yourself be.

    Happiness means different things to different people. For Mary, who has {#blank#}1{#/blank#} severe sleeping problem, happiness is as simple as having a good night's sleep.

    Bed was once a place {#blank#}2{#/blank#} Mary went to rest after a long, hard day. {#blank#}3{#/blank#}, she has not had a full night's sleep in almost six months. Her doctor said that{#blank#}4{#/blank#}(count) sheep might help her fall asleep. She tried this, but soon got tired of it after it failed to work. She finds the nights without sleep almost {#blank#}5{#/blank#}(bear) . She is always sleepy and lacks energy during the day.

    Mary is not alone. Studies show that more than one in three people worldwide struggle with getting enough sleep. It often takes on different {#blank#}6{#/blank#}(form) : some people can get to sleep, but wake up much too early; some get a full night's sleep, but are {#blank#}7{#/blank#}(disappoint)  to find that they still feel tired when they wake up; others, like Mary, find {#blank#}8{#/blank#} difficult to fall asleep in the first place.

    Specialists say that people should not worry too much about this problem. In most cases, a lack of sleep {#blank#}9{#/blank#}(cause) by anxiety and pressure. It is important to keep yourself {#blank#}10{#/blank#} good spirits and to be positive. 

    Are you facing a situation that looks impossible to fix (修理)？

    In 1969, the pollution was terrible along the Cuyahoga River near Cleveland, Ohio. It {#blank#}1{#/blank#}(be) unimaginable that it could ever be cleaned up. The river was so polluted that it{#blank#}2{#/blank#}(actual) caught fire and burned. Now, years later, this river is one of{#blank#}3{#/blank#}most outstanding examples of environmental cleanup.

    {#blank#}4{#/blank#}the river wasn't changed in a few days or even a few months. It took years of work{#blank#}5{#/blank#}(reduce) the industrial pollution and clean the water. Finally, that hard work paid off and now the water in the river is{#blank#}6{#/blank#}(clean) than ever.

    Maybe you are facing an impossible situation. Maybe you have a habit {#blank#}7{#/blank#}is driving your family crazy. Possibly you drink too much or don't know how to control your credit card use. When you face such an impossible situation, don't you want a quick fix and something to change immediately?

    While there are{#blank#}8{#/blank#}(amazed) stories of instant transformation, for most of us the{#blank#}9{#/blank#}(change) are gradual and require a lot of effort and work, like cleaning up a polluted river. Just be{#blank#}10{#/blank#}(patience).

    As a saying goes, he who doesn't reach the Great Wall is not a true man. The Great Wall in China {#blank#}1{#/blank#}(impress) everyone who sees for the first time {#blank#}2{#/blank#} the general tourists to scholars. The vastness of the structure helps children grasp the great {#blank#}3{#/blank#}(achieve) in human history and can help inspire them {#blank#}4{#/blank#} (learn) more about human success over one thousand years.{#blank#}5{#/blank#} (construct) over a period of 2,000 years, the stone solider {#blank#}6{#/blank#}(actual) consists of many great walls, some of{#blank#}7{#/blank#}date back to the fifth century B.C. The first emperor of China, Qin Shi Huang,{#blank#}8{#/blank#} (order) these earlier long wall sections linked and extended with watchtowers to protect the new empire from northern tribes. Succeeding emperors and dynasties continued the construction.{#blank#}9{#/blank#} (spread) westward into the Gobi desert to guard{#blank#}10{#/blank#}Silk Road. All together, the walls may have stretched more than 30,000 miles.