A、
Babies.
B、
Old men.
C、
Young men.
D、
Doctors.
【正确答案】
B
【答案解析】
A、
Because their babies are particularly weak.
B、
Because the flu vaccines are too difficult to reach.
C、
Because the flu vaccines can be lifesaving for them.
D、
Because this is the decision made by the committee.
【正确答案】
C
【答案解析】
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