The changes in china's economy since the 1990s have resulted in a) china's shift to greater market economy reforms. b) china's isolation from the international economy. c) china's increased reliance on their command economy. d) china's economic stagnation and lack of productivity.

Drugs have a high potential for abuse. there is no routine therapeutic use for these drugs and they are not available for regular use. they may be obtained for “investigational use only” by applying to the u.s. drug enforcement agency. examples include heroin and lsd. which scheduled drug is this?