单项选择题
A.4以上70% B.4以上80% C.5以上70% D.5以上80%
A.（ND+H9）-K B.（ND+IB+IBD+REO）-K C.CAV D.（ND+IB+EDS+AE）-K
A.H5N1 Re-8 B.H5N1 Re-11 C.H5N1 Re-12 D.H7N9 H7-Re2