问题 单项选择题 A1/A2型题

超声检查发现右下颌角下方,胸锁乳突肌内侧深部的颈总动脉分叉处一5cm×3cm大小低回声包块,边界清楚,边缘规整,包块使颈内及颈外动脉向两侧推移,但管腔无明显狭窄,包块内有较丰富的动静脉血流,并可见颈外动脉分支直接进入包块内,请指出哪种疾病可能性最大()

A.颈神经纤维瘤

B.颈神经鞘瘤

C.颈交感神经鞘瘤

D.颈动脉体瘤

E.颈动脉瘤

答案

参考答案:D

解析:颈动脉体瘤是发生于颈动脉小体的肿瘤,体积较小时位于颈总动脉分叉处的外鞘内,体积较大时围绕于颈总、颈内与颈外动脉周围,为实性包块,它明显不同于其他血管性疾病表现的血管壁膨出、血管内膜分离和血管本身扭曲。

单项选择题
单项选择题

To produce the upheaval (激变) in the United States that changed and modernized the domain of higher education from the mid-1860s to the mid-1880s, three primary causes interacted. The (1) of a half-dozen leaders in education provided the personal force that was needed. (2) , an outcry (呐喊) for a fresher, more practical, and more advanced kind of instruction (3) among the alumni (校友) and friends of nearly all of the old colleges and grew into a movement that overrode (压倒) all (4) opposition. The aggressive "Young Yale" movement appeared, demanding partial alumni control, a more (5) spirit, and a broader course of study. The graduates of Harvard College simultaneously (6) to relieve the college’s poverty and demand new (7) . Education was pushing toward higher standards in the East by (8) off church leadership everywhere, and in the West by finding a wider range of studies and a new (9) of public duty.

The old-style classical education received its most crushing (10) in the citadel (城堡) of Harvard College, (11) Dr. Charles Eliot, a young captain of thirty-five, son of a former treasurer of Harvard, led the (12) forces. Five revolutionary advances were made during the first years of Dr. Eliot’s (13) They were the elevation and amplification of entrance requirements, the enlargement of the (14) and the development of the (15) system, the recognition of graduate study in the liberal arts, the raising of professional training in law, medicine, and engineering to a postgraduate level, and the fostering (培养) of greater (16) in student life. Standard of admission were sharply advanced in 1872—1877. (17) the appointment of a clean (院长) to take charge of student affairs, and a wise handling of (18) , the undergraduates were led to regard themselves more as young gentlemen and (19) as young animals. One new course of study after another was (20) —science, music, the history of the fine arts, advanced Spanish, political economy, physics and international law.

8()

A.putting

B.taking

C.growing

D.letting