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We are looking for someone who is __________ (可靠的) and hard-working.
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The policeman ___________ have fined me for speeding but finally,he let me go.
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Researchers have found that there are some basic things that you can do to become happier.
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二次函数y=-2x^2的图象经两次平移后得到抛物线y=-2x^2+bx+c,且经过(1,2),(-1,0)两点,试说出平移的过程.
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