男性，30岁。工作中被高压电击伤头部，致颅骨及头皮5cm×5cm大小缺损。颅骨缺损修

患者常在劳累之后低热，伴有头晕乏力，气短懒言，食少纳呆，大便溏薄，舌淡苔白，脉弱。其治法是

A．滋阴清热
B．活血化瘀
C．清肝泻热
D．甘温除热
E．益气养血

男，3岁，常有排尿中断现象，并伴有疼痛，患儿常用手挫拉阴茎，改变体位后，能够恢复排尿，患儿可能是（）。

A.膀胱结石

B.后 * * 瓣膜

C.膀胱炎

D.膀胱憩室

E.前 * * 瓣膜

现有甲、乙两个水平相当的技术工人需进行三次技术比赛，规定三局两胜者为胜方，如果在第一次比赛中甲获胜，这时乙最终取胜的可能性有多大（）

A．1/4

B．1/3

C．1/2

D．1/6

Questions refer to the following information.

In a marketing survey for products A, B, and C, 1,000 people were asked which of the products, if any, they use. The three circular regions in the diagram above represent the numbers of people who use products A, B, and C, according to the survey results. Of the people surveyed, a total of 400 use A, a total of 400 use B, and a total of 450 use C.
How many of the people surveyed use exactly one of the products

A．75

B．100

C．150

D．250

E．(E) 325

治疗肾盂肾炎时，需酸化尿液增强药效的抗生素是（）

A.链霉素

B.庆大霉素

C.呋喃坦啶

D.磺胺药

E.卡那霉素