36. Gorillas are endangered species because ______.
(A) they have no predators
(B) they cause pollution
(C) there are less than 4,000 left in the world
(D) they live in natural rainforests
答案:登入後查看
統計: A(17), B(8), C(183), D(17), E(0) #1412779
統計: A(17), B(8), C(183), D(17), E(0) #1412779