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  3. Drugs have been a part of the American story since the very first day Columbus landed in the New World. The Taino Indians presen

Drugs have been a part of the American story since the very first day Columbus landed in the New World. The Taino Indians presen

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问题      Drugs have been a part of the American story since the very first day Columbus landed in the New World. The Taino Indians presented Columbus with a gift of tobacco, which would go on to become one of the most important drugs in our history. And if drugs have【B1】______ since the beginning, so have drug problems. And so have【B2】______ to solve those drug problems.
     Since the 19th century when Americans first discovered new【B3】______ drugs like heroin and cocaine, the whole society has【B4】______ the problem of drug abuse and【B5】______ .
     When the 20th century began, the United States --【B6】______ with its first drug epidemic【B7】______ set up effective restrictions: at home through 【B8】______ law enforcement and overseas by starting a world movement to limit opium and coca crops.【B9】______ . The first epidemic was forgotten.
     During the 1960s, drugs like marijuana, and psychedelics came on the scene, and a new generation embraced drugs.【B10】______ . In 1973,the U. S. Drug Enforcement Administration was created to enforce federal drug laws. In the 1970s, cocaine reappeared. Then, a decade later, crack appeared, spreading addiction and violence at epidemic levels.
    Today, the DEA’s biggest challenge is the dramatic change in organized crime.【B11】______ .
【B7】
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答案gradually
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