阅读理解。

Oliver: Good afternoon, Mike.

Mike: Good afternoon, Oliver. What time is it now?

Oliver: It's five fifty. Why?

Mike: My mother is ill. My father isn't at home. I must go home and cook dinner.

Oliver: I'm sorry to hear that. Can you cook meals?

Mike: Sure. And I can wash clothes, too.

Oliver: You're helpful. I can't do that, but I can clean the room.

Mike: You are also helpful! I have to go. Goodbye!

Oliver: Bye.

根据对话内容，选择正确答案。

给你1枚骰子，如何检测这枚骰子质地是否均匀？（骰子均匀的标准是：出现1、2、3、4、5、6向上的概率相同，概率越接近骰子质地越均匀）请你设计一个表格，用统计的方法检测1枚骰予的质量．

如下图所示，两块完全相同的金属板A、B，金属板A与静电计相连，用一根与丝绸摩擦过的有机玻璃棒接触金属板A，静电计指针有一偏角．现让金属板B靠近金属板A，则静电计指针的偏角（  ）

解读右图，启示我们（    ）