Jodie doesn't like her job. She is a ____. She____to work in the evening. She has to work on____. She is always busy. She doesn't want to work in a restaurant. It's boring.

    She wants to be an ____. She likes to sing and dance. She likes to work ____ other young people. She wants to be in the pop play. She wants to be known by many people.

    ____ now she can only work in the restaurant. She is very unhappy every day.____ can she do? Can you help her?____a letter to her soon.

遗传物质的基本单位是（）

如图所示为“研究影响平行板电容器电容的因素”的实验装置，在以下操作步骤中，静电计指针的张角分别是怎样变化的？请将答案填在相应的横线上．

①甲图中将B板上移，静电计的指针张角将____（填“增大”或“减小”或“不变”）

②乙图中将B板左移，静电计的指针张角将____（填“增大”或“减小”或“不变”）

③丙图中将电介质插入两板之间，静电计的指针张角将____（填“增大”或“减小”或“不变”）

④本实验的研究方法是____．