【简答题】A.defect B.backwardness C.handicap D.scarcity
【简答题】毛果芸香碱拮抗剂是 ,异丙肾上腺素拮抗剂是 。
【简答题】substantial annual assemble react furnish distinction contract apparent manificent
【单选题】Which of the following statements is true about scarcity?
A.
Scarcity is our inability to satisfy all of our wants.
B.
Scarcity problem arises because our wants are greater than resources available.
C.
The poor and the rich both face scarcity.
【简答题】substantial annual assemble react furnish distinction contract apparent manificent
【简答题】substantial annual assemble react furnish distinction contract apparent manificent