One day, Nick invited his friends to supper. He was cooking some delicious food in the kitchen. Suddenly, he {#blank#}1{#/blank#}(find) that he had run out of salt. So Nick called to his son, “Go to the village and buy some salt, but pay a fair price for it: neither too much {#blank#}2{#/blank#}too little.

    His son looked surprised. “I can understand why I shouldn't pay too much, Father, but if I can pay less,{#blank#}3{#/blank#}not save a bit of money?

    “That would be a very{#blank#}4{#/blank#}(reason) thing to do in a big city, but it could destroy a small village like {#blank#}5{#/blank#}(us), Nick said.

    Nick's guests,{#blank#}6{#/blank#}had heard their conversation, asked why they should not buy salt more cheaply if they could. Nick replied, “The only reason a man would sell salt{#blank#}7{#/blank#}a lower price would be because he was desperate for money. And anyone who took advantage of that situation would be showing a lack of respect for the sweat and struggle of the man who worked very hard to produce it.”

    “But such a small thing couldn't {#blank#}8{#/blank#}(possible) destroy a village.

    “In the beginning, there was only {#blank#}9{#/blank#}very small amount of unfairness in the world, but everyone added a little, always {#blank#}10{#/blank#} (think) that it was only small and not very important, and look where we have ended up today.”

    There once lived a boy named Woo Sing, whose father {#blank#}1{#/blank#} (bring) home a mirror. Woo Sing had never seen one before. So when he saw it for the first time, he didn't understand {#blank#}2{#/blank#} it was, but though he saw another boy, which made him very happy, for he thought the boy {#blank#}3{#/blank#} (come) to play with him. He spoke to the stranger in a very {#blank#}4{#/blank#} (friend) way, but received no reply. He laughed and waved at the boy, who did exactly the same thing. Then he thought, “I'll go closer. It may be that he doesn't hear me.” But when he began to walk, the other boy imitated (模仿) him. Woo Sing stopped  {#blank#}5{#/blank#} (think) about these strange actions, saying to himself, “This boy is fooling me. He does everything that I do.” And the more he thought about it, the{#blank#}6{#/blank#}(angry) he became and soon he noticed the boy became angry too. So Woo Sing {#blank#}7{#/blank#} (strike) the boy in the glass, but he only hurt his own hand and went {#blank#}8{#/blank#} (cry) to his father, who said, “The boy you saw was{#blank#}9{#/blank#}image. This should teach you an important lesson, my son. You should never show your anger to others. Now remember that in real life when you strike{#blank#}10{#/blank#} any cause you'll hurt yourself most of all.”

    At first glance, SoFi looks exactly like a real fish. But if you look {#blank#}1{#/blank#}(close), it's not hard to spot the truth: SoFi is a robot, or as {#blank#}2{#/blank#} (it)MIT developers call it, “ a soft robotic fish”, according to BBC news.

    SoFi {#blank#}3{#/blank#} swim, turn and change speeds just like a real fish, and more {#blank#}4{#/blank#} (importance), it can take high-resolution photos and videos with a camera {#blank#}5{#/blank#}(build) into its nose. The robot's “ soft artificial muscle” is made of a type of rubber, it has two side fins(鳍)for waving, {#blank#}6{#/blank#} its nose also hides important electrical components(组成部分).

    The team at MIT developed SoFi to swim among real fish to explore where few other robots or humans can, reported the Los Angeles Times. It {#blank#}7{#/blank#}(operate) with a waterproof video game controller by someone {#blank#}8{#/blank#} can be up to 21 meters away.

According to its leading {#blank#}9{#/blank#}(create) Robert Katzschmann, SoFi, pronounced like the girl's name “Sophie”, is an abbreviation(缩写)of soft fish— and was named {#blank#}10{#/blank#} a girl he had a crush(暗恋)on in high school.