阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

Jane Goodall has studied chimps for many years and helped people understand how much they behave like humans. She once spent years ____(observe) and recording chimps’ daily activities in their own environment. ____ she first arrived in Gombe in 1960, it was ____(usual) for a woman to live in the forest. Only after her mother came to help her for the first few months ____(be) she allowed to begin her project. One  ____ (importance) thing she discovered was that chimps hunt and eat meat. She also discovered how chimps communicate ____each other.

For forty years Jane Goodall has been outspoken about ____ (make) the rest of the world understand and respect the life of these ____(animal). She is leading____busy life and has achieved what she wanted to do. She inspires those women who want to make ____(achieve) in their lives.

①实践基础上的制度创新是社会变革的先导  ②社会意识决定于社会存在，具有相对独立性

③辩证否定是事物联系的环节和发展的环节  ④辩证否定就是对既往的否定和对现实的肯定