题目内容
Children who stay away from school do______for different reasons.
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设y＝f(x)是满足微分方程y〞＋yˊ－esinx＝0的解，且fˊ(xo)＝0，则f(x)在()．
Built in seventeenth century, the ruined temple is tucked ______ in the pine-covered mountains.
Tourist; How much is that ring, please？
Vendor; Only $200, sir.
Tourist: _____ How about $ 100？
Vendor; I can let you have it for $ 180.
Why should parents stop rewarding their kids for eating vegetables？
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