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A. 10 percent to 25 percent for the proportion of workers who use drugs occasionally on the job B. determine exactly when simpl
A. 10 percent to 25 percent for the proportion of workers who use drugs occasionally on the job B. determine exactly when simpl
admin
2011-01-06
120
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
It is not always easy to ______.
选项
答案
B
解析
答案相关句是第三段第一句It is not always easy to determine exactly when simple drug use becomes abuse.
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职称英语卫生类C级题库职称英语分类
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职称英语卫生类C级
职称英语
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