Scientists are working on the __________ of salt water into fresh water.
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1. The Rape of the Lock and Essay on Criticism are both ___________’s works.
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_____ refers to the degree to which work units are grouped based on functional similarity or similarity of work flow.
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听力原文:M: When are you going to finish this report? You've been working on it for three months.
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Scientists are working on programs to predict where and when an earthquake will occur.(翻译)
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Scientists discovered that atoms of some substances are radioactive. This means that they are unstable and can be split. The chain of splitting atoms releases great destructive energy and it was this discovery which led scientists to develop the idea of an atomic bomb. The American government secretly worked to produce such a bomb and the first version was much more powerful than anyone had thought.
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There are many problems in our modern world. One very()serious problem is energy. We get a great () of energy we need from coal, gas, and oil. However, the () of energy which we use is () every year, and we only have enough coal, gas, and oil for the next twenty or thirty years. How will we live () the energy which these things give us? Scientists are looking for () to this problem. They are looking for new () to produce energy. For example, they are working with new ways to () energy from the light and heat of the sun. They are also working with plans which produce energy from () of the oceans. All of the new methods () scientists are finding are still very expensive, but perhaps they will help solve our energy problems () the future.
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individual study is the stage when students are expected to work on their own at their own speed.()
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