1. The natural balance between prey and predator is increasingly _______, most frequently by human intervention.
(A) celebrated
(B) questioned
(C) observed
(D) disturbed

答案：登入後查看
統計： A(2), B(7), C(9), D(71), E(0) #1287992

詳解 (共 1 筆)

#2153757
1. The natural balan...
(共 292 字，隱藏中）
前往觀看
11
0