One minute she burst into _______, and the next she burst out ______.We just couldn’t catch her mood at any moment.

A．crying, laughter

B．tears, laughing

C．tears, laughter

D．crying, laughing

下列试验中，所选装置不合理的是

①         ②        ③            ④                   ⑤

A．分离Na₂CO₃溶液和CH₃COOC₂H₅，选④

B．用CC1₄提取碘水中的碘，选③

C．用溴水除去甲烷中混有的乙烯，选⑤

D．粗盐提纯，选①和②