2. 外语
  3. A. 10 percent to 25 percent for the proportion of workers who use drugs occasionally on the job B. determine exactly when simple

A. 10 percent to 25 percent for the proportion of workers who use drugs occasionally on the job B. determine exactly when simple

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问题 A. 10 percent to 25 percent for the proportion of workers who use drugs occasionally on the job
B. determine exactly when simple drug use becomes abuse
C. the 1920s until the 1960s
D. the 1960s until the 1970s
E. signals passing through the nervous system
Estimates of employee drug use very greatly, ranging from ______.
选项
答案A
解析 依据是第四段第三句“Estimates of employee drug use vary greatly; ranging from 10 percent to 25 percent for the proportion of workers who use drugs occasionally on the job”。
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