______is the device that provides amplification(the increase in current, voltage, or power of a signal)without appreciably altering the original signal.

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• One important factor that affects the correctness of the results is that __________.

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• . The temperature today is about 68 degrees. That's the temperature in ______________.

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• The main idea of the passage is that __________.

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• This device is used ______________ protecting our houses from the lightning.

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• The main idea of the passage is that ________.

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• The main idea of the passage is that ______.

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• The main idea of the passage is that________.

  A．workaholics are usually successful people, but their lives are in a mess B．workaholism can lead to serious problems but it can also create a joyful life C．people who indulge in their work may enjoy movies, sports and other kinds of entertainment D．those who work even under difficult conditions may be very happy

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• The reason why the laser beam is very strong is that __________． 查看材料

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• The writer believes that intelligence is______.

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• From the text, we learn that Aldous Huxley is of the opinion that______

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• The IT Department is on the top floor, That's______f loot.

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