基本灭火方法有()
A.隔离法
B.窒息灭火法
C.冷却灭火法
D.抑制灭火法
参考答案:A, B, C
_____ with the size of the whole earth, the biggest ocean doesn't seem big at all. [ ]
A. Compare
B. When comparing
C. Comparing
D. When compared
我国古代典籍里的引文前边,常常冠以“子曰”“诗云”,“子曰”就是______说,“诗云”就是《 》上说。(2分)