According to paragraph 4, how many people is expected to make shopping online at least? ( )

(单选题)What’s the main theme of the passage? ( ) (单选题)According to the passage, retirement plans may be offered by (单选题)What will happen if you withdraw your retirement savings bef (单选题)Who can be a financial professional? ( ) (单选题)Which of the following is NOT true about retirement? ( ) (单选题)What’s the author’s attitude to the present airline pricing? (单选题)Why may prices for direct flights be higher according to the (单选题)According to the example, how much should you pay if you fly (单选题)What is puzzling about the airline pricing to the author? ( (单选题)According to the passage, prices are normally determined by