题目

将甲、乙两种金属的性质相比较，已知①甲跟水反应比乙与水反应剧烈；②甲单质能从乙的盐溶液中置换出单质乙；③甲的最高价氧化物的水化物碱性比乙的最高价氧化物的水化物碱性强；④与某金属反应时甲原子得电子数目比乙的多；⑤甲单质的熔沸点比乙的低。能说明甲的金属性比乙强的是      A、①④   B、③⑤   C、①②③    D、①②③④⑤“If you want to see a thing well, reach out and touch it!”That may seem a strange thing to say it. But touching things can help you to see them better. Your eyes can tell you that a glass ball is round. But by holding it in your hands, you can feel how smooth and cool the ball is. You can feel how heavy the glass is. When you feel all these about the ball, you really see it. With your skin, you can feel better. For example, your fingers can tell the difference between two coins in your pocket. You can feel a little drop of water on the back of your hand, too. You can even feel sounds against your skin. Have you ever wanted to know why some people like very loud music? They must like to feel the sounds of music.All children soon learn what “Don’t touch!” means. They hear it often. Yet most of us keep on touching things as we grow up. In shops, we touch things we might buy: food, clothes. To see something well, we have to touch it. The bottoms of our feet can feel things, too. You know this when you walk on warm sand, cool grass or a hard floor. All feel different under your feet. There are ways of learning to see well by feeling. One way is to close your eyes and try to feel everything that is touching your skin. Feel the shoes on your feet, the clothes on your body, the air on your skin. At first, it is not easy to feel these things. You are too used to feel them! Most museums are just for looking. But today some museums have some things to touch. Their signs say, “Do touch!” There you can feel everything on show. If you want to see better, reach out and touch. Then you will really see! 小题1:When people buy things in shops, they often _____. A．try them on firstB．keep their right hands on themC．ask about themD．feel and touch them小题2: Why does it say “At first, it is not easy to feel these things”? because ______. A．the things are used by people, tooB．people feel the things too oftenC．people know how to use the thingsD．the things are easy to feel小题3: Which of the following is true? A．Touching is helping us to see better. B．Our feet, fingers, hands and skin can help us buy food.C．People have to learn to see by feeling as they grow up.D．Visitors can feel the things on show in some museums.小题4:Which of the following can be the best title of the story? A．Touching by Feeling.B．To See or to Feel? C．To See Better-Feel D．Ways of Feeling.