在探究光斑的形状与孔的大小关系时，小华在地面上铺一张白纸，将刻有边长为3cm等边三角形的纸板正对着太阳，保持纸板与地面距离为1m不变，用另一张卡片覆盖在三角形孔上，遮住孔的一部分，如图所示．让太阳光透过小孔，移动覆盖的卡片，改变通光孔的大小．刚开始时，白纸上光斑大小将 ____（“变大”、“不变”或“变小”），光斑亮度 ____（“增强”、“不变”或“减弱”）；当小孔足够小时，此时光斑形状是 ____形，继续移动覆盖的卡片，减小通光孔的大小，白纸上光斑大小将 ____（“变大”、“不变”或“变小”），光斑亮度 ____．（“增强”、“不变”或“减弱”）

如图所示的四幅图片中，其中一幅所反映的光学原理与其他三幅不同的是（　　）

根据内容完成Sally's family tree.

    I'm Sally, I'm a student in No.14 Middle School. This is my family tree. You can see it is a big family. My father is Jonathan, my mother is Claire. They have three children. My brother's name is William and my sister's name is Olivia. My grandparents Jerry and Elizabeth have two sons. My uncle Mike and my aunt Sarah have a son, his name is Joseph. He is my cousin. He is four years old. We all love him very much.

①____ ②____ ③____ ④____ ⑤____