氟化钠溶液每日含漱一次的氟浓度应为
A.0.2%B.0.5%C.0.1%D.0.02%E.0.05%
参考答案:E
下列头颅体表定位线组合,错误的是()
A.眶间线--两眼眶正中连线
B.听眶线--外耳孔与眶下缘连线
C.听鼻线--外耳孔中点与鼻尖连线
D.听眦线--外耳孔中点与眼外眦连线
E.听眉线--外耳孔中点与眶上缘连线
---Could it be in the restaurant_____ you had dinner with me yesterday ______ you left your keys?
A.that; that
B.that; where
C.where; where
D.where; that