内囊后肢前2/3的供血动脉是（）
A.大脑前动脉
B.大脑中动脉
C.大脑后动脉
D.脉络膜前动脉
E.后交通动脉
参考答案：B
Listen! Someone ______ for help! [ ]
A. called
B. is calling
C. has called
相分裂导线有哪几种组合方式？
