— _________. It's really relaxing.   

      A young man was traveling. It was getting late in the day, and he was t{#blank#}1{#/blank#}. When he met an old man on the road, he asked him, “Excuse me, where can I get w{#blank#}2{#/blank#}, sir?”

The old man told him, “Walk along the road and you'll see a small r{#blank#}3{#/blank#}.” Then the old man added, “If you pick up some pebbles(卵石；小圆石) from the river bed, you will get both glad and s{#blank#}4{#/blank#}.”

      The young man t{#blank#}5{#/blank#} the old man and went on his way. When it got dark, he found the river and took a d{#blank#}6{#/blank#}. He thought it was silly to pick up pebbles, b{#blank#}7{#/blank#} he still picked some up. He then found a p{#blank#}8{#/blank#} to sleep.

      The next morning the young man found those pebbles became beautiful, bright jewels (珠宝)。So he ran back to the river q{#blank#}9{#/blank#} to get more, but there were only sands.

      Looking at the beautiful jewels, he felt s{#blank#}10{#/blank#} that he hadn't picked up more. At that time he was happy that he had picked some up.

    Thomas Edison lit up the world with his inventionof the electric light. Without him, the world might still be in the dark. However,the electric light was not his only invention. He also invented the motion picturecamera and over1, 200 other things. About every two weeks he created something new.

    Thomas Edison was born in 1847. He attended school for only threemonths. His mother taught him at home, but Thomas was mostly self-educated. He startedexperimenting at a young age.

    When he was 12 years old, he got his first job. He became a newsboyon train. He did experiments on the train in his spare time. Unluckily, his firstwork experience did not end well. They fired him when he accidentally setfire to the floor of the train. Then Edison worked for five years as a telegraphoperator, but he continued to spend much of his time in experimenting his first  patent(专利权) in 1868 for a vote recorder run by electricity.

    Thomas Edison was totally deaf in one ear and hard of hearing inthe other, but he thought of his deafness as a blessing in many ways. It kept conversationsshort, so that he could have more time for work. He always worked 16 out of every24 hours. Sometimes his wife had to remind him to sleep and eat.

    Thomas Edison died at the age of 84. He left a great many inventionsthat greatly improved the quality of life all over the world.