32×30的积是32×____的积的10倍。

电影《英雄》中刺客无名对秦王说：“剑”字有18 种写法。秦王说，统一以后只剩下一种。请问：秦统一后写“剑”字使用的规范文字是（　　）

阅读理解

     Hello! My name is John, I have a happy family. There are four people in my family. They're my father, my mother, my baby sister and I. We have a beautiful garden. There are two trees and some flowers in it. There are some apples on the tree. Do you like apples and flowers? Welcome to my home.

①同时转动转盘A与B；

②转盘停止后，指针各指向一个数字（如果指针恰好指在分割线上，那么重转一次，直到指针指向一个数字为止），用所指的两个数字作乘积，如果所得的积是偶数，那么甲胜，如果所得的积是奇数，那么乙胜．

你认为这样的规则是否公平？请你说明理由；如果不公平，请你设计一个公平的规则，并说明理由．