救生员在进行双人解脱时，应先确认两个人中谁是溺者。
参考答案：对
— Peter shut his mouth at the meeting all the time. How about Tom?
— _____.
A. He does so
B. He did so
C. So does he
D. So did he
正常1岁半小儿可萌出的乳牙数为（）。
A.2～4枚
B.5～8枚
C.9～10枚
D.11～12枚
E.12～14枚
