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plays the guitar, well, he, how ________________________!
11个月前
I was doing my homework while my parents were ______ (cook)dinner.
11个月前
△ABC中,若∠A、∠B、∠C所对的边a,b,c均成等差数列,∠B= π /3 ,△ABC的面积为4 根号3 ,那么b=______.
1年前
智利南北长4352千米,是世界上最狭长的国家,有漫长的边境线,大致以安第斯山脉为界
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医药上的阿司匹林的组成含氢4.5%、氧35.5%、碳60%,其相对分子质量为180,求原子个数比
1年前