Under high amounts of emotional stress, the body releases ______ amounts of epinephrine
and ______ amounts of norepinephrine into the bloodstream.
a. small, small c. large, small
b. small, large d. large, large
Question 2
The positive effects of heroin ______.
a. are immediate c. vary greatly from user to user
b. take several minutes to develop d. take several hours to develop