阿摩線上測驗
49. Why might dragonflies be considered a friend to humans?
(A) They make good pets.
(B) They are delicious to eat.
(C) They feed on insect pests.
(D) They consume farmers' crops.
答案：登入後查看
統計： A(7), B(6), C(28), D(11), E(0) #2127465
統計： A(7), B(6), C(28), D(11), E(0) #2127465
