---- Is there a vaccine pig influenza?, I’m anxious to know.
----- Don’t worry, there is a vaccine for pigs against pig influenza
A. for; available
B. against ; use
C. to; access
D. against; available
网友回答
A. for; available
B. against ; use
(答案→)C. to; access
D. against; available
解析：C考查考查介词和形容词短语作定语的用法。句意：有治疗猪流感的疫苗么？我非常想知道，不要担心，现在有防止猪感染猪流感的疫苗。available可利用的,against反对符合句意。