To the surprise of the public, the ______ of the cause of such a simple event should have taken more than a year.

(单选题)The underlined phrase “a silver bullet” probably means that (单选题)In the eyes of Ainsworth, his company’s technology ______. (单选题)What is the biggest advantage of kite power? (单选题)What contributes most to Dylan’s career? (单选题)What does the underlined word “incorporate” in Paragraph 3 p (单选题)Which of Dylan’s works expanded the area of popular music? (单选题)Why was Bob Dylan awarded the Nobel Prize? (单选题)Who may get a free upgraded room? (单选题)What do we know about the hotel? (单选题)What is the most typical feature of the hotel?