图中脑室内高回声区域为()
A．室管膜下出血
B．脉络丛
C．肿瘤
D．脑室出血
E．脑室扩张
参考答案：B
Do you know the boy _______ sunglasses? He's my new friend, Brad. [ ]
A. wear
B. wearing
C. wears
D. is wearing
ADSLModem与用户计算机相连的接口是（）
A.RJ11
B.RJ45
C.IEEE1394
D.S/V端子
