34. Which of these dogs are more likely to be optimistic, according to the study?
(A) Ones that bark when left alone.
(B) Ones that remain calm when left alone.
(C) Ones that destroy furniture when left alone.
(D) Ones that relieve themselves when left alone.
答案:登入後查看
統計: 尚無統計資料
統計: 尚無統計資料