阿摩線上測驗
108. Growing pressures from infrastructure development, oil exploration, and industrial
logging _____ ecosystem health the world.
(A)threat
(B) threatening
(C) threaten
(D)which threats
答案：登入後查看
統計： A(981), B(605), C(1008), D(844), E(0) #3075539
統計： A(981), B(605), C(1008), D(844), E(0) #3075539
