第2题: [单项选择]关于大肠癌的描述,下列哪项是恰当的 A. 类癌由腺瘤癌变而来 B. 盲肠癌最多见 C. 少数癌瘤产生CEA D. Dukes D期有远隔器官转移 E. 未分化癌多见 参考答案:D 答案解析:[解题思路] 大肠癌以直肠和乙状结肠最多见。多为高分化和中分化腺癌,并多数产生CEA。少数为类癌,是由嗜银细胞发生的。未分化癌少见。 DukesD期大肠癌伴有远隔脏器转移。 [命题规律] 考察“
第34题: [单项选择]Questions 33 to 35 are based on the passage you have just heard. A. It helps develop our personalities. B. It enables us to acquire first-hand knowledge. C. It makes our life more interesting. D. It brings about changes in our lifestyle. 参考答案:B 答案解析:[听力原文] What does the passage tell us about traveling