40. According to this article, what nutrients can the grass-eating animals get from the grasses of the plains?
(A) proteins
(B) water
(C) carbohydrates
(D) vitamins
答案:登入後查看
統計: A(580), B(154), C(88), D(63), E(0) #3329190
統計: A(580), B(154), C(88), D(63), E(0) #3329190