最易发生栓塞的脑血管是（）
A.大脑中动脉
B.大脑前动脉
C.基底动脉
D.大脑后动脉
E.小脑后下动脉
参考答案：A
.
The growing speed of a plant is influenced by a number of conditions, _______are beyond our control.
A．most of them
B．most of which
C．most of what
D．most of that
腹股沟疝修补术后复发较常见的因素包括（）
A.遗留内环太大
B.疝囊游离和切除不够，未做到真正的高位结扎
C.腹横筋膜或腹横肌腱膜弓缝合失误
D.血肿形成或感染
E.以上都是
