题目

—Why don’t you buy one of the scarves for your mum?  —They are not ______. A. beautiful enough  B. enough beautiful C. too beautiful  D. beautifully enough 答案：A下列反应属于吸热反应的是   (    )A．C6H12O6(葡萄糖aq)+6O2 ="" 6CO2+6H2O B．CH3COOH+KOH = CH3COOK+H2O C．A+B =C+D；△H<0D．破坏生成物全部化学键所需能量小于破坏反应物全部化学键所需能量