Part B for Q36~39 Peter Wohlleben works in a forest in Germany. His job is to take care of trees. At the beginning of his career, he knew little about trees, but after years of hard work, __(36)__.One day something especially changed the way he sees trees.
        It happened one afternoon when he was walking in the forest. A big rock with a strange shape caught his eye. He went over and studied it carefully. __(37)__, it was not a rock, but a piece of wood covered with small green plants. More surprisingly, he saw a little green inside the wood after he cut off a small part of it. In fact, what Peter found was a tree which was cut down hundreds of years ago.        “How could it be? Without leaves, it couldn’t have lived so long,” he thought.__(38)__---it was because the other trees around it sent their roots to it underground and kept giving it “food”.
       Peter was amazed by what he found __(39)__. What does it mean if trees do help each other? Do they have feelings? Can they communicate (溝通) with each other? Since then, Peter hasn’t stopped studying trees.
【題組】36.
(A) he still knew nothing about trees
(B) he became more and more bored
(C) he found himself strong and smart
(D) he got to know more about them