单项选择题According to the passage, which of the following statements is NOT true
单项选择题The underlined word steep (Para. 9 ) can best be replaced by ______.
单项选择题Cooperation can cure the following EXCEPT ______.
单项选择题Which of the following is NOT what the author means by construing the meaning of life
单项选择题The main idea of the passage is ______.