单项选择题The author's general attitude towards video games is that ______.
单项选择题Which of the following most appropriately describes the author's logic of writing this passage
单项选择题As is used in the text, the word profile in the second paragraph most probably means ______.
单项选择题The achievements from Human Genome Project enable researchers to ______.
单项选择题The text is mainly about ______.