题型:选择题 ----May we leave the classroom now?----No, you . You to leave until the bell rings.A.mustn’t; are allowedB.can’t; aren’t allowedC.don’t have to; are allowedD.needn’t; aren’t allowed 查看答案
题型:单项选择题 垂体大腺瘤的CT表现中,下列哪项是错误的A.肿瘤呈圆形,或呈分叶或不规则形B.垂体瘤钙化较多见C.平扫为等密度,或略高密度、低密度D.冠状扫描显示肿瘤呈哑铃状E.增强扫描,大多数呈均匀强化 查看答案