47.（ ）

(单选题)What is the author’s main purpose in writing the text? (单选题)What causes the loss of biodiversity according to the text? (单选题)How many plant species known to science are at the risk of e (单选题)What does the underlined word “momentous” in Paragraph 2 pro (单选题)What made the swans stay there? (单选题)When did the famer find the swans? (单选题)What is the Project Planet Program trying to do? (单选题)Leaving the towels on the floor means ______. (单选题)If you forget your comb, you can ______. (单选题)35.（ ）