单选题 In 1999, Diana read 10 English books and 7 French books. In 2000, she read twice as many French books as English books. If 60% of the books that she read during the two years were French, how many books did she read in 2000?
A. 16
B. 26
C. 32
D. 39
E. 48

【正确答案】 E

【答案解析】Use TACTIC 1: draw a picture representing a pile of books or a bookshelf.
[*]
In the two years the number of French books Diana read was 7 + 2x and the total
[*]