如图所示的正方体被竖直截取了一部分，求被截取的那一部分的体积．（棱柱的体积等于底面积乘高）

一株基因组成为AA的玉米与一株基因组成为aa的玉米相互授粉，则这两株玉米所结的玉米粒（  ）

假如你是张红，想参加一个学校郊游。请发一封电子邮件，介绍一下你的兴趣爱好及能力。要求：语言通顺、语法正确。50词左右，开头和结尾已给出。

Dear sir,

    I want to ……

    I hope to get your letter soon.

                                                                                                                                                                           Yours,

                                                                                                                                                                         Zhang Hong

—True             is worth more than money.

—I agree with you.