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

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