15.（ ）

(单选题)China is sure to further reduce the poor rural population by (单选题)Massive open online courses provide a wonderful model of ___ (单选题)—I’m sorry I broke your cup.—______. Go ahead. (单选题)—Look! The man welcoming us at the school gate ______ be our (单选题)Computers and mobile phones, though they are indeed making o (单选题)______ to think critically is an important skill today’s chi (单选题)—I am very proud of the ______ China has made to fighting ag (单选题)—I hate school; it is not for me. I think I’ll quit.—You ___ (单选题)My friend Lucy is always complaining about her job as a teac (单选题)I had always considered acupuncture（针灸）old-fashioned. But th