Which of the following sentences can be the best tittle for the passage? ( )

(单选题)The important industrial economies mentioned in the passage (单选题)It can be inferred that Whats App and i-Phones ( ). (单选题)Which sentence best expresses the main idea of the passage? (单选题)In what way shows that people have increased awareness of an (单选题)According to the passage, ( ) % of smart-phone users had (单选题)According to the passage, why CTIA conducted the survey? ( (单选题)Which of the following best expresses the author' main point (单选题)In which way could a craft-beer brewer attract customers? ( (单选题)According to the passage, boutique beers wouldn't have explo (单选题)What did brewers do to quench the thirst of the Sahibs in In