由于血脑屏障破坏所致的肿瘤增强是:
A．脑膜瘤
B．垂体瘤
C．听神经瘤
D．胶质瘤
E．三叉神经瘤
参考答案：D
The manager was concerned to hear that two of his trusted workers _____.
A．are leaving
B．have left
C．were leaving
D．will leave
假释
