单选题

There are three questions below，

单选题

The total enrollment in 1985 was approximately how much greater than the total enrollment in 1960?

A、 4 million
B、 5 million
C、 7 million
D、 9 million
E、 11 million

【正确答案】 D

【答案解析】

单选题

For which of the years shown was the ratio of male to female enrollment greatest?

A、 1980
B、 1975
C、 1970
D、 1965
E、 1960

【正确答案】 E

【答案解析】

单选题

For which of the following periods was the percent increase in female enrollment the greatest?

A、 1960 to 1965
B、 1965 to 1970
C、 1970 to 1975
D、 1975 to 1980
E、 1980 to 1985

【正确答案】 A

【答案解析】