题目

—I like this vase. I’ll just pick it up and ... oops! — ____! You almost dropped it.A.Go ahead B.Look out C.Keep quiet D.Look up 答案：【答案】B【解析】句意：我喜欢这个花瓶，我去拿它然后…哎呀！—小心！你差点摔了它。A. Go ahead去吧；B. Look out小心；C. Keep quiet保持安静；D. Look up向上看，根据所给空后面的You almost dropped it“你差点摔了它”可知，应该是小心，故答案选B。长江的发源地及注入的海洋分别是（　　）A．巴颜喀拉山B．唐古拉山C．东海D．渤海