GRE Reading Comprehension: PPO-GRE阅读PPO - 836V9641034Q341QR

The author of the passage would most likely agree with which of the following statements about mature standing herbage? A. It tends to be fairly easy for grazing animals to digest. B. It is likely to predominate at sites with increased soil nitrates. C. Its abundance at a site will make the site less attractive to bison.