首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Surveys have shown that most football and basketball injuries involve the knee, either through twisting or through application o
Surveys have shown that most football and basketball injuries involve the knee, either through twisting or through application o
admin
2014-02-22
78
问题
Surveys have shown that most football and basketball injuries involve the knee, either through twisting or through application of lateral force. Surgery for such injuries has become much simpler with the invention of a thin device containing a fiber optics light that can be inserted into a thin slit in the knee. Repair can be accomplished through this narrow opening. Long-distance runners also suffer knee injuries, but a more common problem for runners is stress fracture, which is a weakening of the front of the shinbone caused by overuse, with pain and possible bone cracking as the result. Ligament tears are more common in gymnastics. Almost all these conditions heal with rest. Prevention of injuries depends primarily on good conditioning. Athletes are also protected by the use of better padding materials and of face masks and eye protectors in rough sports.
The improper or illegal use of drugs and substances for the temporary improvement of athletic performance in competitions has been a frequent subject of inquiry since the 1960s, when drug misuse by athletes to gain an unfair advantage began to rise dramatically. Anabolic steroids supposedly improve strength and endurance, but they can also have harmful side effects as liver damage. Tests for drugs such as heroin and other stimulants were introduced at the Olympic Games in 1968. Anabolic steroids were not banned until 1974, when a suitable test was developed. The illegality of some drugs has not been accepted by a number of other international and national amateur athletic federations, for reasons including testing uncertainties, doubts about banning certain medicinal substances or common drugs such as caffeine, and simple lack of concern. Controversy has also arisen over the legality of the practice of "blood doping," in which an athlete receives a blood transfusion just before an event. The resulting increase in red blood cells apparently increases the athlete’s aerobic power.
When were the tests for drugs used at the Olympic Games?
选项
答案
In 1968
解析
根据第二段中的“Tests for drugs such as heroin and other stimulants were introducedat the Olympic Games in 1968.”可知,奥运会在1968年开始对药品进行检测。
转载请注明原文地址:https://www.kaotiyun.com/show/7PQO777K
0
考博英语
相关试题推荐
Inacompetitiveeconomy,theconsumerusuallyhasthechoiceofseveraldifferentbrandsofthesameproducts.Underneaththeir
Vitaminsareagroupofsubstancesfoundinfood.Thebodyneedsthemforlifeandhealth.Sonaturally,manypeopleareconcern
ThebearisaclassicandenduringAmericansymbolforthebenevolentwild.Wetendtothinkwellofbears,viewingthemaslarg
BritainandSpainhavethehighestproportionofcocaineusersintheEU,accordingtoapan-Europeandrugssurveypublishedtod
Itseemedtome,andstilldoes,thatthesystemofAmericanbusinessoftenproduceswrong,immoralandirresponsibledecisions,
Althougheconomistshavetraditionallyconsideredthedistricttobesolelyanagriculturalone,the______oftheinhabitants’
Anofficeisthe"brain"ofabusiness.Inanoffice,figures,listsandinformationarecompiledwhichtellthemanagersorhe
NickYoung创立了中国发展简报,并编辑英文版本,他说,上周多位北京警方和地方统计局的官员告知他该刊物进行了“未经批准的调查”,因此被认为违反了有关收集统计数据的1983年法律。杨先生说,在该刊物发行的十几年中,当局并未提供颁布此法令的明确
Thereareavarietyofwaystothinkabouttheself.Twoofthemostwidelyusedtermsareself-conceptandself-esteem.Self-co
"TheChildisFatheroftheMan,"wrotetheEnglishpoetWilliamWordsworth.AdultstodayareasawareasWordsworthoftheimpo
随机试题
Gd—DTPA为
一患者右耳前刀砍伤缝合后,局部肿大,穿刺有清亮液体,最可能的原因是
患者要求前牙美观治疗,自觉自牙齿萌出后牙面有花斑,而且周围邻面也有类似表现。查:全口牙列均可见不同程度的散在黄竭色及白垩状斑。该患牙诊断为
一次大量饮清水后尿量增加的原因主要是
药物转运因需要载体而被称为被动转运。()
中国人民银行设立(),应当在国家宏观调控、货币政策制定和调整中,发挥重要作用。
面层可由一层或数层组成,高等级路面可包括(),或称上(表)面层、中面层、下(底)面层。
下列项目中.属于纳税人对税务机关具体行政行为不服而选择的正确申请行政复议的做法有()。
What’syourearliestmemory?Doyourememberlearningtowalk?Thebirthofasibling?Nurseryschool?Adultsrarelyrememberev
Java语言由下列哪个公司发布的?
最新回复
(
0
)