填空题

The urine or hair analysis is currently the most widely used method of drug testing.

【参考答案】

Y

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填空题

By talking to the kids about the danger of taking drugs, drug use among teenagers can be decreased by about a third.

问答题

现今国家号召大学生支农 2.大学生支农存在问题 3.你怎样看待这些问题