胃窦部黏膜重度不典型性增生
A．癌前病变B．交界性肿瘤C．癌肉瘤D．原位癌E．非肿瘤性病变
参考答案：A
病变可能定位于
A．右侧基底节区
B．左侧基底节区
C．脑桥
D．延髓
E．小脑
________ she was invited to the ball made her very happy.
A．Whether
B．That
C．Because
D．What
