题目内容：

 

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（真菌） networks. This makes sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This system works in a very similar way to the networks of neurons（神经元） in our brains, and when one tree is cut down, it affects all.

Simard talks about "Mother Trees". These are the largest, oldest trees that rise above the forest, a concept explained in the movie Avatar. These “Mother Trees" are connected to all the other trees in the forest by this network of fungi, and may manage the resources of the whole trees and plants in the forest. She explains how these trees pass on the wealth to the next generation, transporting important resources to young trees so they may continue to grow. When humans cut down "Mother Trees" without paying attention to these highly complex "tree societies” or the networks on which they feed, we are losing the chances to save the whole forest.

"We didn't take any notice of it,” Simard says sadly. “Mother Trees move nutrition into the young trees before dying, but we never give them a chance.” If we could send this message to the forestry industry, we could make a huge difference towards our environmental protection efforts for the future.

1.Trees can share resources with other ones by________.

A.the help from animals B.underground fungi networks

C.the communication with people D.neurons in the system of brains

2."Mother Trees" are very important because they________.

A.bring wealth to the scientists B.pass on nutrition to young trees

C.get more from the complex “tree societies” D.seem more likely to be cut down by humans

3.The underlined word “it” in the last paragraph refers to________ .

A.how trees grow old B.how "tree societies" work

C.how young trees are saved D.how forestry industry develops

4.What would be the best title for the passage?

A.Trees Are Rich in Resources B.Trees Are Good for Our Society

C.Trees Are in Need of Protection D.Trees Are More Complex Than We Think