1.Weareapproachingthelimitofthenumberofpeopletheearthcansupportadequatelyandweshouldturnto ___ birthcontrol.
A.efficient
B.vigorous
C.military
D.cooperative
2.Thelocalpeoplecouldhardlythinkofanygoodwayto ___ disasterofthewar.
A.shakeoff
B.getoff
C.putoff
D.takeoff
3.Asisknowntoall, acountrygetsa(n) ___ fromtaxes.
A.income
B.revenue
C.fund
D.payment
4.Hecould ___ theshadowyfigureofamanstandingamongthetrees.
A.discover
B.distinguish
C.discern
D.disguise
5.Weare ___ facedwiththenecessitytorecognizethathavingmorepeopleimpliesalowerstandardofliving.
A.readily
B.inevitably
C.smoothly
D.delibrately