Visiting a city you have never been before can be a fun. Finding out informations about the city

before you go can make the trip more interested! Most cities have a travel office from that you

can get manyuseful things.One of the most valuable things is a city map.With a map of the city

shows its streets, you can find your way.It tells about famous places to see.It may even give

them a short history of the city.For example，almost everyone who visits New York want to go

to look the Statue of Libery. You might also find out whether the city had any special foods

while you are visiting.

颅后窝骨折的临床特征为( )。

A．熊猫眼
B．乳突后，枕下区皮下出现淤血
C．脑脊液鼻漏
D．眼镜样血肿
E．脑脊液耳漏