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The Olympic Games are seen as the greatest test of an athlete’s ability and are supposed to celebrate the spirit of fair play. But in fact, sportsmen have been using drugs to cheat their way to victory since the Games first began. In the early years, athletes ate mushrooms(蘑菇)and plant seeds to improve their performance. Nowadays, this kind of cheating has a name doping(服用兴奋剂). Just last month, Britain’s top sprinter(赛跑选手) Dwain Chambers and several American athletes tested positive(呈阳性)for the drug THG. Until a coach secretly gave a sample of THG to scientists, no one knew how to test for it. “We’re like cops(警察)chasing criminals—athletes are always adapting and looking for areas we haven’t investigated,” said Jacquew de Ceaurriz, a French anti-doping expert. Since the first drugs test was carried out at the 1968 Olympics in Mexico City, many cheats have been caught out. The most famous case in history is that of Canadian sprinter Ben Johnson. He broke the 100 meters world record in winning gold at the 1988 Seoul(汉城)Olympics. But days later, he tested positive for drug use, lost his gold medal and was banned from the sport. Five years later, he returned to action—only to be found positive again and banned forever. China has also had problems with drug cheats. At the 1994 Asian Games, 11 Chinese athletes—seven of them swimmers—tested positive for banned drugs. Sports organizations promised th at cheating on this scale would not happen again. Experts are also worried that doping can damage a person’s health. It is believed to increase the risk of liver and kidney(肝肾)diseases, and women may experience reproductive(生育) problems. As long as they can stay ahead of the scientists, it is unlikely the cheats will stop. But experts say there is a limit to what can be achieved and that athletes will not be able to change their bodies using gene(基因)technology. “For the moment, genetic doping does not exist,” said de Ceaurriz. “Even in 10 or 15 years it will not be done easily—the scientific community(界)will not let it happen.” (  ) 60. Which of the following is not the way that some athletes cheat to their better sports achievements? A.Eating mushrooms.        B Taking drug THG. C. Taking genetic doping.       D. Eating plant seeds. (  ) 61. How many countries are mentioned in the passage in which there were athletes doping? A. Two.                 B. Four.                C. Sic.                  D. Eight. (  ) 62. We can infer from the passage that ____. A.scientists get a lot of information about drugs before the athletes take doping B.taking doping will never happen again because of the serious test C.few athletes used drug cheats before the first drugs test was carried out at the 1968 Olympics D.problems with drug cheats are still serious though they are severely tested (  ) 63. Which statement of the following is true? A.Many police are sent to chase criminals of taking doping during the Olympic Games. B.The drug test was carried out until the 1968 Olympics. C.There is the possibility that women athletes taking doping will give no birth to a child. D.Ben Johnson was banned from sports forever for being tested positive for drug use at the 1988 Seoul Olympics.
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【简答题】设加工第一象限直线0A,起点 ,终点 。要求:1、采用3位的累加器,按数字积分器法进行插补计算;2、作出走步轨迹图。(逐点比较法)
【单选题】膀胱膨出出现张力性尿失禁,是因为下列哪项
A.
 膀胱尿道前角消失
B.
 膀胱尿道后角消失
C.
 膀胱尿道前后角消失
D.
 膀胱三角消失
【简答题】正向偏置时,硅材料二极管的死区电压约为 , 锗二极管的死区电压为 ;当二极管导通后,硅管的导通压降为 ,锗管的导通压降为 。
【单选题】如果设计加工第一象限的直线OA,起点为O(0,0)终点坐标为A(11,7),则进行插补运算的结果是,在+x方向走的步数应当是( ).
A.
11
B.
12
C.
7
D.
8
【单选题】膀胱膨出出现张力性尿失禁,是因为下列哪项
A.
膀胱尿道前角消失
B.
膀胱尿道后角消失
C.
膀胱尿道前后角消失
D.
膀胱三角消失
E.
阴道前庭消失
【简答题】二极管导通后,硅二极管的正向压降约为( )V,锗二极管的正向压降约为 ( )V。
【单选题】当代大学生应当自觉地用 的人生观指引人生。
A.
拜金主义
B.
为人民服务
C.
享乐主义
D.
个人主义
【单选题】设加工第一象限直线OA,起点为O(0,0),终点为A(6,3),进行插补计算所需的坐标进给的总步数Nxy为( )
A.
7
B.
8
C.
9
D.
10
【单选题】关于肝性脑病患者饮食护理的叙述,正确的是
A.
每日总热量以脂肪为主
B.
血氨偏高者限制蛋白质摄入
C.
病情好转后主要选择动物蛋白
D.
病情好转后主要选择动物蛋白
E.
每日饮水量不少于2000mL
【简答题】谈谈中国为什么实行民族区域自治制度,而未采取苏维埃联邦制度的模式?
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