问题 单项选择题

3岁男孩,身高67cm,懒动,便秘。体检:反应迟钝,上部量大于下部量,鼻梁低平.舌厚大并常伸出口外,皮肤干燥,左腕正位片叮见一枚化骨核,最可能的诊断是

A.唐氏综合征

B.佝偻病

C.垂体性矮小症

D.软骨发育不良

E.甲状腺功能减退症

答案

参考答案:E

解析:甲状腺功能减退症的典型症状包括:特殊面容和体态(头大、皮肤粗糙、面色苍黄,无光泽、面部黏液水肿、眼距宽,鼻梁低平,唇厚,舌大而宽厚、常伸出口外、躯干长而四肢短小、上部量/下部量>1.5)、神经系统症状(智能发育低下,表情呆板、淡漠,神经反射迟钝)、患儿骨龄常明显落后于实际年龄等。

问答题 简答题
单项选择题

Throughout the 19th century and into the 20th, citizens of the United States maintained a bias against big cities. Most lived on farms and in small towns and believed cities to be centres of (1) , crime, poverty and moral (2) Their distrust was caused, (3) , by a national ideology that (4) farming the greatest occupation and rural living (5) to urban living. This attitude (6) even as the number of urban dwellers increased and cities became an essential (7) of the national landscape. Gradually, economic reality overcame ideology. Thousands (8) the precarious (不稳定的) life on the farm for more secure and better paying jobs in the city. But when these people (9) from the countryside, they carried their fears and suspicions with them. These new urbanities, already convinced that cities were (10) with great problems, eagerly (11) the progressive reforms that promised to bring order out of the (12) of the city.

One of many reforms came (13) the area of public utilities. Water and sewerage systems were usually operated by (14) governments, but the gas and electric networks were privately owned. Reformers feared that the privately owned utility companies would (15) exorbitant (过渡的) rates for these essential services and (16) them only to people who could afford them. Some city and state governments responded by (17) the utility companies, but a number of cities began to supply these services themselves. (18) of these reforms argued that public ownership and regulation would (19) widespread access to these utilities and guarantee a (20) price.

20()

A.fair

B.just

C.square

D.objective