下列选项结果为真(.T.)的表达式是( )。A．"NA"$"NAVECO" B．"

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.

重组对话我最行！请你把下面句子填入合适的位置，组成一个小对话。

a. That's wonderful! 

b. Hello! Mrs. Smith. 

c. My son and I are going on a trip to Beijing. 

d. Hello! This is Mrs. Li speaking. 

e. Can Jenny and Danny come? 

f. They can go with you!

I invited Joe and Linda to dinner, but _____ of them came. [ ]

A. none    

B. both        

C. each        

D. neither

古代规定，五品以下官员不允许在其所居住的建筑物门前放石狮。

制订工程项目进度计划，采用计划评审技术的方法时，PERT(计划评审技术)与CPM(关键线路法)的最大区别在于PERT使用了( )。

A．平均时间估算

B．加权平均时间估算

C．总时间估算

D．阶段时间估算