题目

从右边选项中选择适当的试剂除杂，把相应的字母填写在表格内。 物质（括号内为杂质）答案除杂试剂 (1) CO2气体（SO2） A．加热 B．饱和碳酸氢钠 C．溴水 D．铁粉 (2) CH4气体（CH2=CH2） (3) Na2CO3固体（NaHCO3） (4) FeCl2溶液（FeCl3） 答案：B或C、C、A、DA: 【1】 I decided to go to the Disneyland with my brother.B: Really? That's cool. 【2】 The one in Hong Kong or the one in Paris?A: Neither. The one in Los Angeles. Because we want to visit Hollywood after that.B: 【3】A: Five days in total. We will spend the first day in Disneyland and two days in Hollywood, and we will go to the beaches for the other two days.B: Sounds great! 【4】 In a hotel, or in a home stay in a stranger's house?A: Well, our aunt lives in Los Angeles, so we will stay there.B: 【5】 .A.Lucky you.B.Where are you going to stay?C.How long will you spend in Los Angeles?D.Which Disneyland do you want to go?E.The summer holiday is comingF.You are welcome.