第7题: [单项选择]骨盆骨折由于解剖位置的关系,易出现并发伤,以下描述错误的是() A. 骨盆壁与多处静脉丛相邻,骨折后可伴有这些静脉的出血 B. 骶管内为马尾,骶骨骨折可损伤骶神经 C. 坐骨神经从闭孔穿出时,可因耻骨骨折而伤及 D. 坐骨支骨折可刺破直肠形成开放骨折 E. 后尿道损伤多为耻骨骨折引起 参考答案:C
A. an article of popular science B. the introduction of a book of astronomy C. a lecture given by the author to astronomy students D. the preface of a piece of science fiction 参考答案:B 答案解析:综观全文,尤其是从最后一段第一句中的“In designing this edition,the Wadsworh editors and I have tried to respond to the