41.（ ）

(单选题)According to the passage, a life preserver should be first o (单选题)What is the passage mainly about? (单选题)Which is the best tittle of the passage? (单选题)It can be inferred from the passage that ______. (单选题)What does the underlined word “cultivating” in the fourth pa (单选题)We can learn from the first two paragraphs that ______. (单选题)From the passage, we can see that the author thinks the futu (单选题)Christopher Nassetta would most likely agree that ______. (单选题)What does the underlined word “streamline” in the third para (单选题)According to the first two paragraphs, which of the followin