第8题: [单项选择]产前超声诊断胎盘内部组织结构的病变,不包括() A. 胎盘梗死 B. 胎盘植入 C. 胎盘绒毛膜血管瘤 D. 胎盘钙化 E. 胎盘囊肿 参考答案:B 答案解析:胎盘植入是胎盘异常附着于子宫,胎盘绒毛部分侵入子宫肌层。胎盘内多个大小不一形态不规则液性暗区,胎盘后方子宫肌层变薄。
第9题: [单项选择]When the colonel learned that headquarters had been unable to send him reinforcements, he ______ the order for the scheduled attack. A. countermanded B. relinquished C. rephrased D. invalidated 参考答案:A 答案解析:(countermand撤消命令)。句意为:上校听说司令部未能给他派去援军,他撤消了预定进攻的命令。B.relinquish放弃;C.rephrase给……重新措辞;D.invalidate使无效。