The tone of the passage suggest that the author is ( ) about the world economy.

(单选题)Which one is NOT true according to Dr. Brock Bastian? ( ) (单选题)Why does society need to change its attitude on depression? (单选题)How long were these volunteers being tracked? ( ) (单选题)What did University of Melbourne researchers suggest? ( ) (单选题)What does the underlined sentence of paragraph 1 mean? ( (单选题)What does the passage mainly talk about? ( ) (单选题)How many saving tricks have been mentioned in the passage? ( (单选题)Which one is NOT the saving trick mentioned in the passage? (单选题)What does the underlined word “top-down view” mean? ( ) (单选题)Which one of the following statements is TRUE? ( )