关于曲线运动，下面说法正确的是（   ）

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.

下列各图为元素周期表的一部分，表中的数字为原子序数，其中M为37的是（　　）

下列说法中符合物理史实的是（   ）