如果不动显微镜的其他部分，只是转动转换器，将物镜由10×转换成45×，视野中的光线将会____．

读下图北京市简图，图中甲海域和乙省级行政区域单位分别是（    ）

材料：2016年，教育部开展了首届全国学生“学宪法讲宪法”活动。该活动分为“学宪法”与“讲宪法”两个部分。下面是某校学生的活动内容展示。

学宪法——完成图解宪法的内容

    It was a Monday morning. When a teacher walked into the1, he heard a low voice: “Here is the teacher. I am 2this boring fellow(烦人的家伙) is going to talk about putting in commas(逗号).” It was a boy's3. His name was Bill. He was talking4the boy next to him. The teacher didn't get angry. He said5about it, then he really began to talk about putting in commas, and then he wrote6the sentence: “Bill says the teacher is a boring fellow.” The class7and Bill's face8red. “Now,” said the teacher, “I'll 9you how important commas are.”

    He put two commas in the sentence, and now read, “10is a boring fellow.”

狒狒群中有首领，有分工．这是下列哪种行为的主要特征（　　）