题目

根据下列实验操作和现象所得到的结论正确的是（ ） 选项实验操作和现象实验结论 A向1mL1%的NaOH溶液中加入2mL 的CuSO4溶液， 振荡后再加入0.5mL有机物Y，加热，未出现砖红色沉淀Y中不含有醛基 B将金属钠在燃烧匙中点燃，迅速伸入集满CO2的集气瓶，瓶中产生大量白烟和黑色颗粒CO2具有氧化性 C加热盛有少量NH4HCO3固体的试管，并在试管口放置湿润的红色石蕊试纸，石蕊试纸变蓝NH4HCO3显碱性 D向滴有酚酞的Na2CO3溶液中，逐滴加入BaCl2溶液，溶液红色逐渐褪In no country        London, as has been mentioned,         experience four seasons during the curse of a dingle day.A．other than; one canB．apart from; one canC．other that; can oneD．rather than; can one