I know the number of people in this city ____ 550,000 and a number of them ____ from Asia. [ ]

A. are; are

B. is; is

C. is; are

D. are; is

男性，35岁。右大腿被速度较快的汽车撞伤，伤后右大腿下1/3向后成角，局部明显肿胀，不能扪及足背动脉搏动，足趾发凉。诊断首先要考虑（）。

A.股骨下1/3骨折伴软组织挫伤

B.股骨下1/3骨折伴血肿

C.股骨下1／3骨折伴股动脉损伤

D.股骨下1／3骨折伴股静脉损伤

E.股骨下1／3骨折伴股神经损伤