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In recent years, there have been several mine accidents. Many workers have lost their lives. Great loss has been caused to our people and our country.
As middle school students, we can design a kind of robot which can take the place of mine workers. It will work in the mine instead of workers. We call it Robot Rat. It is fitted with a computer and long arms. It can push, pull, lift and turn. It can be controlled by the workers on the well.
It can work for a long time without feeling tired. In case an accident happens, no persons will be killed or even injured. Above all, it is fixed with the most modern sensors, which can find the gas or the bleeding in time and sound the alarm to make the workers on the well know what is happening underground.
At the same time, it can flee as early and quickly as possible so as to avoid being hurt or damaged.
We really hope our dream comes true in no time.
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Peking University will enroll students recommended by high school principals next year. The recommended students will have an extra 30 points added to their national college entrance exam scores. Peking University¡¯s move has set off a nationwide debate.
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