The incidence of this disease has been gre
题型:单项选择题
问题:
The incidence of this disease has been greatly reduced thanks to our health care program.()
A. seriousness
B. frequency of occurrence
C. mortality
D. cure rate
The incidence of this disease has been greatly reduced thanks to our health care program.()
A. seriousness
B. frequency of occurrence
C. mortality
D. cure rate