In the last paragraph the author cites the example of beautiful peacocks with gorgeous tails to mean ______.

单项选择题In fourth paragraph, the author cites the example of Monica and Bill to show that ______.

单项选择题According to the author, the breakthrough of this technology starts firm ______.

单项选择题Which of the following is a most likely meaning for the word bonobo' in the first paragraph

单项选择题The second paragraph is mainly about ______.

单项选择题Front the passage, we can safely infer that ______.