题目

用方框中所给单词的适当形式填空，使对话通顺、正确。每词仅用—次(每空—词)。 make interest subject because sure A:What's your favorite day, Eric?B:I like Friday I have music and math on that day. They're myfavorite .A:Who is your music teacher?B:Ms. Xu. She always her classes fun.A:That's great! But why do you like math? It's very difficult.B:Oh, I think math is . What's your favorite subject?A:It's P.E. I think it's fun.B:That's for . I like it, too.除去下列物质中少量杂质的方法正确的是（　　） A、除去FeCl2溶液中混有的FeCl3：加入过量铁粉，过滤B、除去NO2中混有的NO：用水洗气C、除去CO2中混有的HCl：用饱和碳酸钠溶液洗气D、除去Cu粉中混有的CuO：加适量稀硝酸后，过滤、洗涤