● 电子图书悄然问世，带来了巨大的市场潜力，并对出版业造成一定的冲击 ● 电子图书的优势和弊端 ● 电子图书与纸质书刊的前景 Is It Farewell to the Printed Book

单项选择题Which of the following statements about emotions is NOT TRUE

单项选择题Why do the researchers try to classify emotions

单项选择题What are the elements that produce human emotions

单项选择题The passage indicates that individual emotions ______.

单项选择题The two examples given in the third paragraph shows that ______.

单项选择题Some environmentalists warn that the soaring population will cause ______.

单项选择题The example in paragraph 8 indicated that ______.

单项选择题Researchers state that ______.

单项选择题Biologists report that the biodiversity is decreasing because ______.

单项选择题The passage mainly tells us that ______.