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
173.答案是B，第一空特指；第二空a means of making a living.一种谋生的途径。
174.答案是B；第一空世界卫生组织是专有名词，需要加the；第二空为特指。
