阿摩線上測驗
35 Young children have a limited concentration ______ and can’t focus on one activity for a long time.
(A) scale
(B) spot
(C) slot
(D) span
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統計： A(2), B(1), C(0), D(6), E(0) #4002902
統計： A(2), B(1), C(0), D(6), E(0) #4002902
