为了解某校九年级男生身高情况，从该校九年级男生中随机选出10名男生，测量出他们的身高（单位：cm），并整理成如下统计表：

根据以上表格信息解决如下问题：

（1）求出这10名学生身高的平均数、中位数和众数；

（2）如果约定：选择某个量为标准，将身高在该选定标准的±2%范围之内都称为“普通身高”．请你选择（1）中的某个统计量作为标准．并按此约定找出这10名男生中具有“普通身高”的是哪几位？

（3）若该校九年级男生共有280名，按（2）中选定标准，请你估算该年级男生中具有“普通身高”的人数约有多少名？

填入适当的词补全对话，每空一词。

A: What's your ____, Madam?

B: I feel very weak. I can hardly do any work, Doctor.

A:____ long have you been like this?

B: Ever since last month.

A: Do you____a headache?

B: No, I ____.

A: Do you sleep well at night?

B: Yes. I sleep very well.

A: Do you often have breakfast?

B: No. I have never had breakfast, and I have____ food for lunch because I would like to be thin.

A: Oh, I see. There's not much wrong  ____ you. You have to take more food and have three meals a day. And do some sports every day. Then you will get____ soon.

下列词语中加线的字，读音完全不相同的一项是(　　)