下列各项中有错别字的一项是[ ] A．冠冕　教习　沉鱼落雁　张灯结彩 B．女婿

A Sports体育运动
Many animals engage in play，but homo sapiens is the only animal (1) have invented sports.Since sports are an invention，a part of culture (2) than an aspect of nature，all definitions of sports are somewhat arbitrary. (3) sports are a human universal found in every known culture or a (4) unique to modern society depends upon one’s definition of sports.Men and (5) have always run，jumped，climbed，lifted，thrown， and wrestled，but they have (6) always performed these physical activities competitively. Although all literate societies seem to (7) contests of one sort or another in which men， and sometimes women， (8) in displays and tests of physical skill and prowess，sports may be (9) defined as physical contests performed for their own sake and not for (10) ulterior end.According to this strict definition，neither Neolithic hunters nor contestants (11) religious ceremonies such as the ancient Olympic Games were engaged in sports. (12) on the stipulation that sports must be performed for their own sake (13) the paradoxical elimination of many activities which are usually thought of as (14) ，such as exercises done for the sake of cardiovascular fitness，races run (15) satisfy a physical education requirement，ball games played to earn a paycheck. (16) definition also means abandonment of the traditional usage in which"sport，"derived (17) Middle English disporter，refers to any light hearted recreational activity.In the. (18) of some 18th- century aristocrats，a game of backgammon and the seduction of (19) milkmaid were both considered good sport，but this usage of the term (20) become archaic.

种子发芽率表示（    ）占（    ）的百分之几。

下列有关应用连续硬膜外阻滞分娩镇痛的叙述，正确的是（）

A.适用于宫缩乏力产妇

B.有一点穿刺和两点穿刺置管两种

C.常用药物为1%利多卡因或0.25%布比卡因

D.于第一产程前半期开始注药

E.禁用有仰卧位低血压综合征

若有如下程序段，其中s、a、b、c均已定义为整型变量，且a、c均已赋值(c大于0)
s=a;
for(b=1;b＜=c;b++)s=s+1;
则与上述程序段功能等价的赋值语句是( )。

A) s=a+b;
B) s=a+c;
C) s=s+c;
D) s=b+c;

断肢（指）后，现场应离体断肢（指）清洗。