Accessibility links
Skip to main content
Skip to main Navigation
Skip to Search
About Learning English
Beginning Level
Intermediate Level
Advanced Level
US History
Video
Follow Us
Languages
Search
Search
Previous
Next
Breaking News
Quiz - Studying Opioid Users as They Try to Stop
July 25, 2019
Question 1 / 4
Why are U.S. government scientists studying the brains of opioid users?
They want to understand the brain’s reward system.
Scientists do not understand how dopamine responds to drug use.
They want to see if medicines can change the brains of addicts.
Scientists hope to find a cure for drug addiction.
Submit Answer
Next Question
Quiz - Studying Opioid Users as They Try to Stop
XS
SM
MD
LG
