TOEFL Reading: ETS-TOEFL阅读机经 - XTNH88D1E6ND1XQZL$

Select the TWO answer choices that point to flaws in the tall-trees hypothesis, according to paragraph 2. To receive credit, you must select TWO answers. A. Many gliding animals begin their glides from midway positions of tree trunks. B. Gliding animals are not evenly spread throughout the forests of the Southeast Asian region. C. Most gliding animals are incapable of ascending to the tops of trees. D. Many gliding animals are found in locations where trees tend to be relatively short.