问题
选择题
下列做法正确的是（ ）
A．用甲醛水溶液浸泡水产品以延长保鲜期
B．用肥皂水区分硬水和软水
C．服用氢氧化钠治疗胃酸过多
D．将工业用盐（如NaNO2）用于烹调
答案
答案：B
搜题请搜索小程序“爱下问搜题”
下列做法正确的是（ ）
A．用甲醛水溶液浸泡水产品以延长保鲜期
B．用肥皂水区分硬水和软水
C．服用氢氧化钠治疗胃酸过多
D．将工业用盐（如NaNO2）用于烹调
答案：B
选用方框中的句子完成对话，其中有两项是多余的。 Li Lei: Excuse me. 1 Mr. Smith: Yes. And you are.. . ? Li Lei: I’m Li Lei. Your friend Miss Wu is busy at the moment. She asks me to meet you. Welcome to Hangzhou, Mr. Smith. Mr. Smith: Thank you. Li Lei: By the way,2 Mr. Smith: No. This is my second time. I came here in 1998 for the first time. Li Lei: 3 Mr. Smith: I like it very much. It’s very beautiful and famous in the world. And the people here are quite friendly. 4 Li Lei: I’m glad you like the city. And now Hangzhou is becoming more and more beautiful. 5 Mr. Smith: I think so. Thank you very much for meeting me. Li Lei: It’s a pleasure.
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