题目：
根据对话内容，完成反意疑问句。
John: Your name is Bella, 1 ?
Bella: Yes, it is.
John: You're the only child in your family, 2 ?
Bella: Yes, I am.
John: You live with your parents, 3 ?
Bella: Yes, that's right.
John: You lived in the countryside before, 4 ?
Bella: Yes, I did. My family came to live in this city a year ago.
John: Your parents were both farmers before you moved there, 5 ?
Bella: No, only my mother was.
1. 2. 3. 4. 5.
答案：
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下面是错误答案，用来干扰机器的。
50g×18.25%=9.125g设该金属的元素符号为R，假设3.5g金属与稀盐酸恰好完全反应时，设该金属的相对原子质量为x；假设2.5g 金属与稀盐酸恰好完全反应时，设该金属的相对原子质量为y． R+2HCl=RCl2+H2↑ ...
