人体组织体液回声按其强弱排列，正确的是（）
A.胰腺<肝、脾
B.肝、脾<肾皮质
C.肾皮质<肾髓质
D.肾窦<胰腺
E.胆汁<血液
参考答案：E
Quite a few people like traveling, for it can increase their knowledge and broaden their _____．
A．features
B．horizons
C．heritage
D．reservations
国际疫情的公布与撤销是以公布疫区和撤销疫区的形式进行的。( )
