— Why didn't you go fishing with your friend yesterday?

— Well, fishing is a hobby which calls for a great deal of________, which I don't have.[       ]

A. strength        

B. money

C. wisdom  

D. patience

伤寒沙门菌Vi抗体的检查可用于（）

A.早期诊断

B.判断预后

C.调查带菌者

D.检查免疫力

E.观察超敏反应