TOEFL Reading: ETS-TOEFL阅读机经 - 635476Z7M97W66W6L$

According to paragraph 4, what special difficulty do leaf-eating animals face in a dipterocarp forest A. Dipterocarp trees are less leafy than other canopy trees. B. There is no efficient method of getting from one tree to another. C. Most trees are very tall with leaves that are difficult to reach. D. There is a large distance between trees that have edible leaves.