单项选择题
A.10.1%,p<0.0001 B.9.1%,p<0.001 C.8.1%,p<0.01 D.7.1%,p<0.01
A.45.80% B.55.80% C.65.80% D.75.80%
A.34% B.44% C.54% D.64%