The medical experts warned the authorities of the danger of diseases in the （）of the earthquake.

单项选择题According to the new tax law, any money earned over that level is taxed at the （）of 59 percent.

A. ratio
B. percentage
C. proportion
D. rate

单项选择题In my first year at the university I learnt the（） of journalism.

A. basics
B. basic
C. elementary
D. elements