A. began using binary numbers B. was used to implement the Unix operating system C. was put into the market D. was used for modeling physical and environmental events 参考答案:C 答案解析:语意题。1959年即the late 1950’s而put into the market即成为商业语言(commercial language),因此C为正确答案。
第20题: [单项选择]患者,女,26岁,体检时发现甲状腺右叶内有一1cm大小的孤立结节,无任何自觉症状。 该患者行手术时病理检查(冰冻):“甲状腺乳头状腺癌”为主,部分为“滤泡状腺癌”,有较完整的包膜,无腺体被膜侵犯,无肿大淋巴结,其手术治疗方案应是 A. 肿瘤分化良好,有完整包膜,应行肿瘤摘除 B. 有滤泡状腺癌成分,应行甲状腺全切除与双侧颈部淋巴结清扫术 C. 肿瘤只限于右叶,又无被膜侵犯,应行甲状腺右叶全切除 D. 属分化良好型,应选用右叶与峡部全切除,左叶次全切除 E. 应行右叶全切除与右颈部淋巴结清扫术 参考答案:D