As the College Entrance Examination is d

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问题:

As the College Entrance Examination is drawing nearby, some students would rather expect

good luck than to make every effort to study.They think success results good luck.Whether they can be admitted to key universities depend on luck.However, others insist that diligence is a mother of success.Only by working hard can they achieve what they want.Since they fail sometimes, they don’t give up, for they believe that success lies in our own hands.As for me, I’m in favor of the latter opinion.Luck doesn’t come alone.It goes hand by hand with hard working.Sometimes, some students are lucky enough to succeed, but such luck won’t last long because it is not basing on their own abilities.

考点:序数词
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一列沿x轴正方向传播的简谐波,其波源位于坐标原点O,且在t=0时刻的波形图如图所示.已知这列波在P出现两次波峰的最短时间是0.4 s,求:

(1)这列波的波速; 

(2)试写出质点P做简谐运动的表达式;

(3)从t=0时刻开始计时,质点R第一次到达波谷所用的时间.

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婚假工资发放吗?

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柏子仁经过()炮制后,可消除其()。

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夜间会车时,对面来车的灯光会造成驾驶人眩目而看不清前方的交通情况,驾驶人应将视线右移避开对方车辆灯光,并减速行驶。

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中 * * 党执政,就是领导和支持人民当家作主,最广泛地动员和组织人民依法管理国家和社会事务,维护和实现人民群众的根本利益。

运用政治常识简要回答,中 * * 党主要是通过哪些制度和途径实现人民当家作主的?

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