15.
(A) This method is often used in science and math classes.
(B) It also allows them to apply what they’ve learned in new situations.
(C) However, some students prefer to study in groups.
(D) The teacher asked them to repeat the words several times.
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統計: A(0), B(5), C(0), D(0), E(0) #3557057
統計: A(0), B(5), C(0), D(0), E(0) #3557057