题目内容双击单词支持查询和收藏哦～
收藏
纠错
题目材料：
For mass-market books in 2015, which of the following is closest to the ratio of the dollar amount of sales of adult hardcover books to the dollar amount of sales of juvenile hardcover books?
-
A.7 to 2
-
B.5 to 2
-
C.4 to 1
-
D.3 to 1
-
E.2 to 1
D显示答案
