{{B}}pAssAgE onE quEstions 26 to 28 ArE BusED on thE pAssAgE you hAvE just hEArD、{{/B}}

A．thAt Drugs shoulD not BE usED without DoCtors’ ADviCE.
B．thAt Drugs AnD suBstAnCEs ArE DiFFErEnt.
C．thAt suBstAnCEs shoulD BE usED in A sCiEntiFiC wAy.
D．thAt thE misusE oF suBstAnCEs is hArmFul.