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问题 解答题

一列火车从石家庄到北京，每小时行100千米，2.8小时到达，火车提速后每小时行140千米，上午8：00开出，几时到达？

答案

100×2.8÷140，

=280÷140，

=2（小时）；

8时+2时=10时；

答：10时可以到达．

填空题

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.
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单项选择题

鞍区、桥小脑角区的MRI检查技术叙述错误的项是（）

A.适应证垂体微腺瘤，垂体腺瘤，桥小脑角占位，鞍区脑膜瘤

B.常规采用高分辨、薄层矢状、冠状面扫描

C.微小病变，如垂体微腺瘤需做动态增强扫描

D.横断位是观察垂体和海绵窦最好的方位

E.鉴别鞍区病变的出血或脂肪成分需加做脂肪抑制序列
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