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of farms in the Southwestern United States. Then the farms turned into fields of dry land, because few trees grow in the dry Southwest.Now we try to save trees. In many forests, when a tree is cut down, a new tree is planted in its place. We do not want the land to die.( )1. From the passage, we can see ___________. A. tree roots hold sand B. men may destroy the land C. trees grow only in deserts D. land can never bee desert( )2. What do trees possibly do? A. Trees keep other plants away. B. Trees help other plants grow. C. Trees hold other plants down. D. Trees destroy other plants.( )3. Why did farms in the Southwestern United States turn into fields of dry land? A. Because there have been few trees growing there. B. Because people planted quite a few trees there. C. Because many people moved there to make a living. D. Because when a tree was cut down, a new tree was planted in its place.BMr. King is a tall and strong man. He teaches . in a middle school. He wears a long beard(胡子)and takes good care of it. It was Sunday yesterday. There was a big football match of the year on the playground in the centre of the city. Mr. King likes the game very much and of course he was going to watch it. With his friends39。 help, he got a ticket a few days ago. After breakfast he hurried to the bus stop, but a lot of people were waiting there. A bus came and he could hardly got on. There were a lot of people in it and it was difficult for them to put their feet. He had to grip(抓?。゛ back of the chair. At the next stop a boy got on the bus. He was short and couldn39。t grip anything. Suddenly the bus stopped and the boy almost fell to the floor. He looked around and saw Mr. King39。s beard and grip it. The man found it at once and called out, Let go off(松開)my beard, boy!Are you going to get off, sir? asked the boy. ( )4. It was difficult for Mr. King to stand because ___. A. he had drunk too much B. the bus was too small C .he got on the bus too late D. it was very crowded(擁擠) in the bus( )5. The boy gripped Mr. King39。s beard because ___. A. he was afraid to fall again B. he wanted to make the man angry C. he hoped the man found a seat for him D. he hoped the man got off soon( )6. Mr. King was afraid ___, so he shouted at him. A. the boy would pull him