The author develops the idea that blood doping works in the laboratory by
A. listing the disadvantages of blood doping.
B. explaining how blood doping tainted the triumphs of some Olympians.
C. presenting some of the research findings.
D. telling the readers about the athletes' competition results.
查看答案
Which of the following statements is true according to the passage？
A. Those who admit blood doping will be punished by law.
Blood doping does athletes good.
C. The athletes who blood-doped are sure to win.
D. There is no way to find out the cases of blood doping.
In recent years much more emphasis has been put ______ developing the students' productive
A. onto
B. in
C. over
D. on
Blood doping is banned because
A. it is harmful to the athletes' health.
B. it is dishonest.
C. it is opposed by most athletes.
D. it affects the athletes' performances.
Business people and educators in the United States
A. are mainly responsible for the health of the national economy.
B. are concerned more with the productivity of the individual worker.
C. are sensitive to the unemployment rate.
D. are concerned with the development of useful skills.
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