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
24
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.
Controversy arises over the illegality of some common drugs due to______.
选项
答案
testing uncertainties,doubts about banning certain medicinal substances or commondrugs such as caffeine,and simple lack of concern
解析
根据第二段中的“The illegality of some drugs has not been accepted by a numberof other international and national amateur athletic federations,for reasons including testinguncertainties,doubts about banning certain medicinal substances or common drugs such ascaffeine,and simple lack of concern.”可知,针对一些普通药物的违法性产生争议的原因包括检测的不确定性、对禁用咖啡因等一些药用物质或普通药品所产生的怀疑以及简单地只是不关心此问题。
转载请注明原文地址:https://kaotiyun.com/show/OPQO777K
0
考博英语
相关试题推荐
WhowontheWorldCup2004footballgame?WhathappenedattheUnitedNations?Howdidthecriticslikethenewplay?【61】aneven
Insuchachanging,complexsocietyformerlysimplesolutionstoinformationalneedsbecomecomplicated.Manyoflife’sproblems
Forover30years,DonaldKroodsmahasworkedtodisclosesuchmysteriesofbirdcommunication.Throughfieldstudiesandlabora
Tensofthousandsofretireesarepullingupstakesinsuburbanareasandfashioningtheirownretirementcommunitiesinthehea
Althoughtoomuch【C1】______tothesun’sultravioletrayscancauseskincancer,sunshinemayhavea【C2】______effectagainstsome
Hypertensionplacesstressonanumberoforgans(calledtargetorgans,includingthekidney,eyes,andheart,causingthemto___
Theopeningceremonyisagreatoccasion.Itisessential______forthat.
Foryearspediatriciansdidn’tworrymuchabouttreatinghypertensionintheirpatients.Afterall,kidsgrowsofast,it’shard
Itissaidthatsomethingwas_____waybackwhenEnronCEOJeffreyWilliamdepartedthecompanyonlysixmonthsafterbeingeleva
Prof.Smith______fortyorsowhenIfirstmethimattheInternationalPeaceConferenceinGeneva.
随机试题
"Avoidtherush-hour"mustbethesloganoflargecitiesallovertheworld.Whereveryoulook,there’repeople,people,people.
阅读某教师的口语交际教学叙事片段,按照要求答题。为了提高学生的口语表达能力,我结合传统节日组织了一次口语交际教学活动,在中秋节到来之前,我安排学生搜集有关中秋节的资料,分门别类加以整理。然后要求所有学生结合自己搜集的资料写一段关于中秋节的短文,在
A.表虚证B.表实证C.里虚证D.里实证发热,恶风,头项强痛,汗出,脉浮无力,此属
既能凉血止血。又能散瘀解毒消痈的药物是()
A.通宣理肺丸B.养阴清肺丸C.蛇胆川贝液D.参贝北瓜膏E.苏子降气丸治风寒束表,咳嗽宜用
凡被降低或取消质量等级的旅游景区,自降低或取消等级之日起1年内,不得重新申请重新评定等级。()
在人体内食物吸收的主要部位是()。
下列关于特殊侵权的表述正确的是()。
A、It’s11:35.B、It’s11:28.C、It’s11:45.D、It’s11:38.D本题的解题关键在于听清but后的部分it’s7minutesahead。男士问女士几点了,女十说:“我的表显示是11:45.但是它快7分
Isscienceinfinite?Canitkeepgivingusprofoundinsightsintotheworldforever?Orisitalreadybumpingintolimits?Inhi
最新回复
(
0
)