A：分液
B：加入氢氧化钠溶液后，充分振荡，静置后分液
C：加入过量溴水，过滤
D：加入FeCl3溶液后，过滤
选择正确的字。
（促 猝）____然 （瞬 顺）____间
（阔 括）____号 （弯 蜿）____蜒
---I don't like my life in this school. I sometimes feel so_____ and helpless.
--- I don't think so. You are never____ because all your classmates are ready to help you.
