题目

Would it surprise you to learn that, like animals, trees can communicate with each other and pass on their wealth to the next generation--their young trees?Suzanne Simard, forest ecologist at the University of British Columbia, explains how trees are much more complex than most of us ever imagined. Simard and her colleagues have made the major discovery that trees and plants really do communicate and interact with each other.Trees live on through their group work and support, passing around the resources such as nitrogen and carbon “depending on who needs it by miles of underground fungi（—That must be a mistake.  　 —No, it _____ a mistake.  A．mustnotbeB．needn’tbeC．cannotbeD．wouldnotbe