阅读理解
Questions 26-30 are based on the following table:
单选题
Which marital status shows the least difference between males and females?
单选题
Which of the following had the highest marriage rate?
单选题
The percentage of females out of marriage in 2011 was ____________.
单选题
Which group showed the greatest change over the 20 years?
单选题
What characteristic can be found from the table?