例句與造句

1. Doctors now know that a combination of three or more drugs is the most effective treatment for HIV . Using a single drug can lead quickly to drug resistance.
2. In November 2009, Ohio announced that it would only use a single drug for lethal injections, consisting of a single dose of Sodium thiopental, the first state to do so.
3. It's difficult to find use a single drug in a sentence. 用use a single drug造句挺難的