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【简答题】
Long after the 1998 World Cup was won, disappointed fans were still cursing the disputed refereeing decisions that denied victory to their team. A researcher was appointed to study the performance of some top referees. The researcher organized an experimental tournament involving four youth teams. Each match lasted an hour, divided into three periods of 20 minutes during which different referees were in charge. Observers noted down the referees’ errors, of which there were 61 over the tournament. Converted to a standard match of 90 minutes, each referee made almost 23 mistakes, a remarkably high number. The researcher then studied the videotapes to analyse the matches in detail. Surprisingly, he found that errors were more likely when the referees were close to the incident. When the officials got it right, they were, on average, 17 meters away from the action. The average distance in the case of errors was 12 meters. The research shows the optimum (最佳的) distance is about 20 meters. There also seemed to be an optimum speed. Correct decisions came when the referees were moving at a speed of about 2 meters per second. The average speed for errors was 4 meters per second. If FIFA, football’s international ruling body, wants to improve the standard of refereeing at the next World Cup, it should encourage referees to keep their eyes on the action from a distance, rather than rushing to keep up with the ball, the researcher argues. He also says that FIFA’s insistence that referees should retire at age 45 may be misguided. If keeping up with the action is not so important, their physical condition is less critical. 小题1:The experiment conducted by the researcher was meant to ________. A.review the decisions of referees at the 1998 World Cup B.analyse the causes of errors made by football referees C.set a standard for football refereeing D.reexamine the rules for football refereeing 小题2:The number of refereeing errors in the experimental matches was ________. A.slightly above average B.higher than in the 1998 World Cup C.quite unexpected D.as high as in a standard match 小题3:The findings of the experiment show that ________. A.errors are more likely when a referee keeps close to the ball B.the farther the referee is from the incident, the fewer the errors C.the more slowly the referee runs, the more likely errors will occur D.errors are less likely when a referee stays in one spot 小题4:The word “officials” (Para. 4) most probably refers to ________. A.the researchers involved in the experiment B.the inspectors of the football tournament C.the referees of the football tournament D.the observers at the site of the experiment 小题5:What is one of the possible conclusions of the experiment? A.The ideal retirement age for an experienced football referee is 45. B.Age should not be the chief consideration in choosing a football referee. C.A football referee should be as young and energetic as possible. D.An experienced football referee can do well even when in poor physical condition.
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举一反三
【简答题】n. 腰,腰部,腰围_____
【单选题】用铈量法测定铁时,滴定至化学计量点时的电位是 ( ) [已知 ¢ Ce4+/Ce3+= 1.44 V, ¢ Fe3+/Fe2+= 0.68 V ]
A.
0.68 V
B.
1.44 V
C.
1.06 V
D.
0.86 V
【单选题】铈量法测定铁时,滴定至 50% 时的电位是 [ 已知 ¢ (Ce 4+ /Ce 3+ )= 1.44 V , ¢ (Fe 3+ /Fe 2+ )= 0.68 V]
A.
0.68 V
B.
1.44 V
C.
1.06 V
D.
0.86 V
【单选题】已知 ¢ (Ce4+/Ce3+)=1.44 V, ¢ (Fe3+/Fe2+)=0.68 V, 则反应 Ce4++Fe2+=Ce3++Fe3+ 在化学计量点时溶液中c(Fe3+)/c(Fe2+)为
A.
1.1×10-18
B.
92.5
C.
36.2
D.
2.8×106
【单选题】用铈量法测定铁时, 滴定至 50% 时的电位是( ) [已知 ¢ (Ce4+/Ce3+)= 1.44 V, ¢ (Fe3+/Fe2+)= 0.68 V]
A.
0.68 V
B.
1.44 V
C.
1.06 V
D.
0.86 V
【单选题】如果一种商品的价格下降会引起另外一种商品需求量的下降,也就是说,两种物品之间的交叉价格弹性是正的,那么,这两种物品之间的关系很可能是( )
A.
不相关的两种商品
B.
必需品
C.
互补品
D.
替代品
【单选题】以 Ce 4+ 滴定 Fe 2+ [ 已 知 φ θ ¢ (Ce 4+ /Ce 3+ )= 1.44 V, φ θ ¢ (Fe 3+ /Fe 2+ )= 0.68 V ] ,在 1 mol·L -1 H 2 SO 4 溶液中,最适宜采用的指示剂为
A.
二苯胺磺酸钠( φ θ ¢ In = 0.84 V )
B.
邻苯氨基苯甲酸( φ θ ¢ In = 0.89 V )
C.
邻二氮菲 - 亚铁( φ θ ¢ In = 1.06 V )
D.
硝基邻二氮菲 - 亚铁( φ θ ¢ In =1.25V )
【单选题】排除蓄电池自放电故障时,要关闭( )。
A.
点火开关
B.
各用电设备
C.
起动机
D.
发电机
【简答题】围绝经期综合征(绝经前后诸证)(40分) 例:某患者,女性,48岁。干部,近2个月经未潮,时感烘热汗出,午后面红潮热,头目眩晕,腰酸耳鸣,夜间盗汗,寐差梦多,烦躁不安,皮肤干燥、瘙痒,口干便结,尿少色黄。 查体:T36.9℃,P84次/分,R18次/分,BP115/70mmHg。心肺听诊阴性,腹软,舌红少苔,脉弦细数。 辅助检查:血常规:WBC6.0×109/L,N%67%,HGB109g/L。 ...
【单选题】患者女,38岁,阴道不规则出血1个月,发热2天伴下腹坠痛、腰酸痛来诊。平素月经规律,5/28天,G 2 P 1 ,上环8年,曾患左附件炎。1个月前月经中期阴道开始出血,量时多时少,同时感下腹部坠痛,腰酸,精神不振,疲乏,失眠,昨日起发热,T:38.8℃,腹痛、腰酸加重。查体:BP16/10.7kPa(120/80mmHg),P100次/分,心、肺(-),下腹部肌紧张(+),压痛(+),反跳痛(±)...
A.
全子宫+双附件切除术
B.
右附件切除术
C.
左附件切除术
D.
左附件切除+子宫次全切除术
E.
盆腔肿瘤减灭术
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