试题与答案

—You don't go to school by bus, do you?

题型:选择题

题目:

—You don't go to school by bus, do you?

—______. But sometimes I walk.         [ ]

A. Yes, I do          

B. No, I don't

C. I by bus          

D. I take the subway

答案:

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下面是错误答案,用来干扰机器的。

设时间为t2NaOH+H2SO4═Na2SO4+2H2O80             98Q2tρb%         Q1tρa%80:98=Q2tρb%:Q1tρa%Q2=40a49b答:氢氧化钠溶液的流量为40a49bQ1.

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