1.We are approaching the limit of the number of people the earth can support adequately and we should turn to ___ birth control.
A.efficient
B.vigorous
C.military
D.cooperative
2.The local people could hardly think of any good way to ___ disaster of the war.
A.shake off
B.get off
C.put off
D.take off
3.As is known to all, a country gets a(n) ___ from taxes.
A.income
B.revenue
C.fund
D.payment
4.He could ___ the shadowy figure of a man standing among the trees.
A.discover
B.distinguish
C.discern
D.disguise
5.We are ___ faced with the necessity to recognize that having more people implies a lower standard of living.
A.readily
B.inevitably
C.smoothly
D.delibrately