Perthes试验可检查
A．交通支静脉瓣膜功能B．大隐静脉瓣、小隐静脉瓣、交通支静脉瓣功能C．下肢功能D．深静脉功能E．浅静脉功能
参考答案：D
关于小肠源性肿瘤，叙述错误的是（）。
A.小肠腺癌是最常见的小肠原发性恶性肿瘤
B.十二指肠壶腹部的腺癌大部分为腺瘤癌变所致
C.胃肠道间质瘤（GIST）是小肠最常见的间叶源性肿瘤
D.转移性肿瘤占小肠恶性肿瘤的50%以上
E.当肠黏膜无溃疡，且肿瘤存在多个中心时，应考虑原发性肿瘤
Not until you told me what had happened, ________. [ ]
A. didn’t I know anything about it
B. I knew nothing about it
C. did I know anything about it
D. had not I known anything about it
