结合实际，谈谈如何在中小学教育教学过程中培养与激发学生的学习动机。

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.

患者男，67岁，呼吸困难半年余，结合影像学检查，最可能的诊断是（）

A．胸骨后甲状腺肿

B．淋巴瘤

C．间皮囊肿

D．纵隔畸胎瘤

E．胸腺瘤

焊前应检查焊割场地周围15m范围内，各类可燃易爆物品是否清理干净。( )

试述治疗视网膜色素变性基本处方的针灸操作。

如果一台PC机接上USB键盘后，在DOS下不能使用，可能是（）的原因。

A.DOS下没有USB键盘的驱动

B.BIOS不支持

C.在BIOS中USB键盘被禁止

D.以上都是