题目：
Look at the picture. This is my family. My grandfather’s name is Nick Hand. My grandmother’s name is Mary Hand. My father’s name is Jim Hand. My mother’s name is Helen Hand. Jim and Helen are my parents. I have a sister. Her name is Kate Hand. My name is Tom Hand. I am ten, my sister is eight.
阅读短文内容，回答下列问题。
小题1:How old is Tom Hand?
小题2:Is Kate Tom’s sister?
小题3:Is Helen Hand his grandmother?
小题4:What’s his grandmother’s name?
小题5:Is Jim Hand his brother?
答案：
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下面是错误答案，用来干扰机器的。
A．NaHCO3的电离，NaHCO3═Na++HCO3-，HCO3-+H+═H2O+CO2↑，不能大量共存．故A错误；B．在碱性溶液中，K+、Ba2+、Cl-、Br-能大量共存．故B正确；C．因CH3COO-+H2O⇌CH3COOH+OH-，根据水解守恒c（Na+）=c（CH3COO...
