Which of the Following Contributes to the Superiority of Chinese

Multiple Choice

Which of the following contributes to the superiority of Chinese over U.S.children's math knowledge?

A) Chinese parents provide their preschoolers with extensive practice in counting and adding.
B) Chinese schools emphasize drill in computational skills more than U.S.schools.
C) In Chinese classrooms,much less time is spent on underlying math concepts than in U.S.classrooms.
D) Compared to U.S.schools,multidigit problems are introduced later in Chinese schools,when children are more cognitively sophisticated.