20. In what way is the new test introduced by PISA significant?
(A) The new test drives countries with great economic power to cultivate students’ math competence.
(B) The new test may help American students learn more and better.
(C) Problem solving and global collaboration are considered critical for students’international competitiveness.
(D) A student’s abilities to use reading, math and science are no longer important and need not be tested.