18. Why did mongooses become undesired in Hawaii?
(A) They ate too few black rats.
(B) They caused
deadly diseases.
(C) They did more harm than good.
(D) They behaved fiercely toward humans.
答案:登入後查看
統計: A(4), B(5), C(24), D(3), E(0) #3108405
統計: A(4), B(5), C(24), D(3), E(0) #3108405