第6题: [单项选择]关于早期胃癌的定义,正确的是 A. 癌组织局限于黏膜内,无转移 B. 癌组织局限于黏膜内或侵及黏膜下层,无转移 C. 癌组织局限于黏膜内或侵及固有肌层,无转移 D. 癌组织局限于黏膜内,可有转移 E. 癌组织局限于黏膜内或侵及黏膜下层,不论有无转移 参考答案:E 答案解析:早期胃癌指癌局限于黏膜或黏膜下层,而不论其大小或有无转移。
第15题: [单项选择]When he was( )he had become a professor. A. in his early thirty B. in his early thirties C. in his thirty early D. in his thirty earlier 参考答案:B 答案解析: