题目

小明将一只点燃的蜡烛放在凸透镜（f=10cm）前18cm处，光屏上得到了烛焰倒立、 的清晰像．然后他在蜡烛和凸透镜之间放置了一个远视眼镜片，由于远视眼镜片对光线有 作用，所以光屏上烛焰的清晰像变模糊了（如图所示）．若想在光屏上重新得到清晰的烛焰像，他可将光屏凸透镜． 答案：【1】放大【2】会聚【3】靠近One morning, a little mouse went out to find something to eat. He was careless and met a fierce(凶猛的)lion. The lion caught the mouse. The lion wanted to eat him. “Please let me go, Mr Lion,” said the mouse. “One day, I will help you.”The lion laughed, “How could a little mouse help a big lion?” “Well,” he said, “I will let you go. But you must walk more carefully. ”The mouse was very thankful. “Thank you, Mr Lion. You are very kind. I will repay(报答)you one day. ”the little mouse said. The next week, the mouse was looking for something to eat again. He saw the lion under a tree. But the lion was tied tightly(紧系着)in a strong rope. He could not get out. “I will help you,” said the mouse. His teeth were sharp. Then he bit one rope, and then another. Soon the lion was free. He was very happy. “Thank you, Mr Mouse,” he said. Later, they became good friends.1.What did the little mouse do one morning?A. He went to play.B. He went for a walk.C. He looked for something to eat.D. He went out to buy something to eat.2.Who did the little mouse meet?A. A tiger. B. A monkey. C. An elephant. D. A lion.3.What did the little mouse think of the lion?A. Kind. B. Fierce. C. Careless. D. Polite.4.Why did the little mouse help the lion?A. Because the lion gave some food to him.B. Because he wanted to repay the lion.C. Because the lion was fierce.D. Because the lion wanted to repay him.5.What is the main idea of the passage?A. A lion caught a mouse and let it go.B. The lion didn’t like eating a mouse.C. A mouse helped a lion out.D. Don’t look down upon(小看) the small things.