被中外学者誉为“北回归线上的绿宝石”的是()。
A.丹霞山
B.鼎湖山
C.西樵山
D.罗浮山
参考答案:B
哪一项治疗为首选
A.手术
B.赛庚啶
C.溴隐亭
D.黄体酮
E.雌激素
The Urgency Signal()indicates that the station calling has a very urgent message to transmit concerning the safety of a ship or aircraft,or of some person on board or within sight.
A.SOS
B.XXX
C.TTT
D.PAN