填写下面植物细胞和动物细胞结构图中各部分的名称并思考回答问题：

人体胚胎发育的起点和场所分别是（  ）

材料一：造物主为了世界的繁荣，用自己的口，双手，双腿和双脚相应地创造了婆罗门、刹帝利、吠舍和首陀罗。国王应极力使吠舍和首陀罗执行自己的义务，因为他们逃避自己的义务时，则使这个世界动摇。刹帝利无婆罗门不能幸福，婆罗门无刹帝利不能昌盛。

材料二：

某班同学在“探究凸透镜成像规律”的实验中，记录并绘制了像到凸透镜的距离v跟物体到凸透镜的距离u之间关系的图象，如图所示，下列判断正确的是（　　）

    My teacher Mr. Li is a y____ man, about 25 years old. He is a h____ teacher, working(工作) at school from 7:30 in the morning to 18:30 in the e____. It seems(仿佛) that he has many things to do every day. Although he's b____ with his work and has no time to play, after class he likes playing f____ with boys in the playground. Look! He's kicking the ball! We all like him very much.