题目

关于加速度，下列说法中正确的是 A．加速度就是增加的速度               B．加速度一定，速度的变化也一定 C．加速度增大时，速度不一定增大       D．加速度的方向就是速度的方向 答案：COnce there was a forest where all the animals lived happily together. One day a family went to spend the day in the forest, and the son left his socks there. After the family left, a bear came by, found the socks, and decided to try them on. They fit so well, and he liked them so much that he wouldn’t take them off.All the animals talked about the bear’s new look. Soon, in that forest, there began appearing squirrels in shirts, rabbits in shoes, and even rats wearing hats! The forest doctor shook his head, telling animals, “This can’t be good. Animals don’t need clothes!” But no one listened to him. They said he was just out of fashion.However, it wasn’t long before the first results of fashion-fever came. Several times the squirrel caught his shirt on trees, stopping him in mid-jump and sending him falling to the ground from a tree. The rat couldn’t go into his hole without taking off his hat first. Even the bear, because of his socks, slipped from the river rock and almost killed himself.When the animals came to see the doctor, he gave them all the same advice, “Take off those clothes before one day they’re going to kill you.” Those who listened to the doctor’s advice stopped having accidents. And the animals realized that they didn’t need clothes at all. Starting to wear them had been very dangerous, and they had only done it to make others admire them, and to get attention.1. ______ found the socks and tried them on.A. The son B. The bear C. The rabbit D. The rat2.From the story we can know that______.A. the family had a good time with the bearB. the animals didn’t like the bear’s new lookC. the squirrel couldn’t go into his hole with his hat onD. the forest doctor told the animals not to wear clothes3.Which of the following can explain the underlined sentence “it wasn’t long before the first results of fashion-fever came”?A. Soon the animals had accidents because of the clothesB. Soon the animals had a fever because of the clothesC. Soon the animals became healthier in the warm clothesD. Soon the animals enjoyed wearing clothes very much4.The story is written to tell us______.A. helping others is helping yourself B. we should be careful in the forestC. things that fit yourself are the best D. animals must be looked after well