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          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.

    Running a few kilometers each day is good for our health. However, new research says running too much could be bad for us. Running long distances {#blank#}1{#/blank#}(regular) for many years could make our life{#blank#}2{#/blank#}(short), not longer. The study is from the Minneapolis Heart Institute. A researcher said too much running can created plague(斑) inside your heart,{#blank#}3{#/blank#}can lead to heart disease. He wrote that running too much for many years takes away the good things from exercise. He{#blank#}4{#/blank#}(add) that the risk of heart disease could be{#blank#}5{#/blank#}same as someone who never exercised.

    Researchers looked{#blank#}6{#/blank#}the health and training of 3,300 runners over the age of 35. 70% of them ran over 30 kilometers a week. Men who ran marathons for 25 years had 62% more plaque in their heart than men who did little{#blank#}7{#/blank#}no exercise. Another doctor said he felt cheated. He started running marathons in 1967. He used{#blank#}8{#/blank#}(run) 60 kilometers every week. He said, “I thought I was out there exhausting{#blank#}9{#/blank#}(me), building an absolutely strong heart.” The doctor advised{#blank#}10{#/blank#}(exercise) frequently but not to overdo things.

    A mouse, because of a(n) {#blank#}1{#/blank#} (luck) chance, made close friends with an evil frog. One day, {#blank#}2{#/blank#} frog played a trick on the mouse by {#blank#}3{#/blank#} (tie)a foot of the mouse to his own. At first, both of them joined together and the frog led his friend toward the pool {#blank#}4{#/blank#} he lived, and didn't stop until he reached the side of the water. Then the frog {#blank#}5{#/blank#} (sudden) jumped into the water and the mouse {#blank#}6{#/blank#} (pull) in with him. The frog enjoyed {#blank#}7{#/blank#} (he) in the water, happily dancing and crying

    {#blank#}8{#/blank#}if he had done a great deed The unhappy mouse died soon in the water, and his dead body floated on the surface, {#blank#}9{#/blank#} (fasten) to the foot of the frog. A hawk saw the dead mouse, suddenly flew down towards, caught it and flew away. The frog, still tied to the foot of the mouse, was also carried off as a {#blank#}10{#/blank#} (prison), and he was eaten by the hawk.