50. Forest primates and certain sea animals are mentioned in the passage as examples of animals that use tools for
(A) self-protection
(B) food preparation
(C) hunting prey
(D) building nests or home plants grow.
答案:登入後查看
統計: A(7), B(1), C(1), D(1), E(0) #801823
統計: A(7), B(1), C(1), D(1), E(0) #801823