19. A family of four wants to go on the tour. Their ages are 39, 35, 11, and 8. How much do they have to pay?
(A) $30
(B) $60
(C) $80
(D) $120

答案：登入後查看
統計： A(16), B(287), C(10), D(5), E(0) #3293212

詳解 (共 1 筆)

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