173.For him _____ stage is just _____ means of making living.

A.a;a

B.the;a

C.the;the

D.a;the

174.Accrodigng to ____ World Health Organization,health care plans are needed in all big cities to prevent _____ spread of AIDS.

A.the;/

B.the;the

C.a;a

D./;the

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