此资源为用户分享，在本站免费下载，只限于您用于个人教学研究。

约3310字。
　　2010届高三英语复习题：Unit 13 The USA
　　习题精选
　　一、阅读理解
　　Dingo
　　“What’s the matter, dad?”asked the boy. Something had wakened him. He had e outside to see his father standing on the steps, rifle in hand .
　　“Dingo, son. Must be the one that’s been killing our sheep.”
　　The silence of the night was split by the long, shrill wail of a dingo -- the wild dog of Australia. The wail e from the quarry about a quarter of a mile from the house.
　　The boy’s father lifted his rifle. He fired several shots in the direction of the quarry. "There , that ought to scare him off," he said .
　　In the morning the boy saddled his horse. He rode slowly along beside the old stone quarry, looking for signs of the dingo. Suddenly he saw it. It was lying flat on the limb of a tree that
　　grew out from the high cliff face . It must have slipped over the edge of the cliff in its flight
　　during the night. As it fell, it must have landed in the branches. Below the tree was a sheer drop of sixty feet . The dingo was trapped beautifully. The boy went to tell his father .
　　“Are you going to shoot it, dad?”he asked as they returned to the quarry .
　　"I guess so. It’ll only starve up there anyway." He lifted the rifle and aimed. The boy waited for the shot - but it never e. His father had lowered the rifle again.
　　"Aren’t you going to shoot it?" asked the boy.
　　"Not now, son ."
　　"Are you going to let it go?"
　　“Not if I can help it, son .”
　　"Then why don’t you shoot it?"
　　"It just doesn’t seem fair."
　　Next day when they rode out, the dingo was still there. It seemed to be gauging the distance between its limb and the top of the cliff -- as though it would jump up . Still his father didn’t shoot it .
　　By the third day the dingo was starting to look thin and weak . The boy’s father raised his rifle slowly, almost sadly. He aimed and fired. The boy looked first at the ground, expecting to see the dingo’s corpse. Finding the ground bare, he loop at the tree .
　　The dingo was still there. Never before had his father missed such an easy shot .
　　The frightened dingo glanced down at the ground. Then it crouched back on its hind legs.
　　"Look, dad. It’s going to jump. Shoot it now. Quicot;
　　Suddenly the dingo sprang. The boy watched, expecting it to hurtle to the ground. Instead he saw it clinging to the face of the cliff . Its paws grappled wildly at the sliding rock. Its hind feet pward.
　　"Now, dad," the boy urged, "or it’ll get away."
　　His father did not move.
　　The dingo hauled itself weakly over the top. Still his father didn’t raise the rifle. The dingo walked away from the edge of the cliff and drifted out of sight .
　　"You let it go," the boy shouted.
　　“Yes, I let it go," his father said.