治疗口炎常用的口腔清洗液为（）
A.双氧水
B.生理盐水
C.来苏儿
D.10%氯化钠溶液
E.20%硫酸钠溶液
参考答案：B
五年级同学参加兴趣小组，其中画画的有26人，比参加舞蹈组人数的2倍少4人，参加舞蹈组的有多少人？正确列式是[ ]
A． 26÷2-4
B． 26÷2+4
C．（26+4）÷2
The killer was caught at a pub ______ he was surfing the net, ______ relaxed us all.
A．which, that
B．where, which
C．where, that
D．that, which
