If you are a loner, you’d better get yourself some friends, or else risk ______ precious brain cells.

(单选题)The author’s purpose in writing the report is to ______. (单选题)The most disastrous effect of global warming the report pred (单选题)What is the major concern we should have about our Mother Ea (单选题)The underlined phrase in Para.1 most probably means ______. (单选题)What is Sean Gallagher’s attitude to the future of micro-cre (单选题)What might be the advantage of micro-credentials? (单选题)Why did micro-credentials come into being? (单选题)What does the underlined word “balloon” in Paragraph 1 mean? (单选题)What is mainly discussed in the passage? (单选题)（ ）