《登飞来峰》一诗中蕴含站得高,看得远的道理的诗句是:____,____。
— Who's that man in our classroom? It ________ be Mr. Brown. He is much taller. — You mean the man in white? He is an exchange student from England.
a.除去石灰水中悬浮的碳酸钙颗粒____;
b.除去氯化钠中混有的碘单质(碘易由固态变为气态)____;
c.分离水与苯的混合物____;
d.分离氯化钠和硝酸钾的混合物____.
请你就下边漫画反映的现象谈谈你的认识