题目

2011年安徽省安庆市高三第二次模拟考试 It was on November 15, 2010 ______ a big fire happened in Shanghai, ______ was a great shock to lots of people. A. when; that        B. that; when             C. which; when         D. that; which 答案：D下列除去括号内杂质的有关操作方法正确的是（　　）①CO2（SO2）：饱和NaHCO3的溶液，洗气．②KCl（AlCl3）：氨水，过滤．③C2H6（C2H4）：溴的CCl4溶液，洗气．④水（碘）：酒精，萃取分液．⑤苯（甲苯）：分馏．A．①②③B．③④⑤C．②④D．①③⑤