阿摩線上測驗
77. What was the average gain from PSAT to SAT of students who did NOT participate in the
free personalized improvement practice through Khan Academy?
(A) about 330 points
(B) about 58 points
(C) about 34 points
(D) about 20 points
答案：登入後查看
統計： A(33), B(86), C(7), D(4), E(0) #1670410
統計： A(33), B(86), C(7), D(4), E(0) #1670410
