下列关于冠状动脉瘤的CT表现哪项是正确的（）

A.多层螺旋CT不能显示动脉瘤全貌

B.CT横断面图像不利于观察动脉瘤壁

C.多见附壁血栓

D.动脉瘤壁无钙化

E.CT横断面图像不利于观察动脉瘤壁局限性或弥漫性扩张，形态为囊状、梭形或不规则形

The bridge enables people to get to the island in less than an hour. The underlined part means
"（）".

A. makes it safe for

B. makes it possible for

C. makes it necessary for

D. makes it enjoyable for