更新时间: 试题数量: 购买人数: 提供作者:

有效期: 个月

章节介绍: 共有个章节

收藏
搜索
题库预览
Larry was on another of his underwater expeditions (探险) but this time, it was different. He decided to take his daughter along with him. She was only ten years old. This would be her first trip with her father on what he had always been famous for. Larry first began diving when he was his daughter's age. Similarly, his father had taken him along on one of his expeditions. Since then, he had never looked back. Larry started out by renting diving suits from the small diving shop just along the shore. He had hated them. They were either too big or too small. Then, there was the instructor. He gave him a short lesson before allowing him into the water with his father. He had made an exception. Larry would never have been able to go down without at least five hours of theory and another similar number of hours on practical lessons with a guide. Children his age were not even allowed to dive. After the first expedition, Larry's later diving adventures only got better and better. There was never a dull moment. In his black and blue suit and with an oxygen tank fastened on his back, Larry dived from boats into the middle of the ocean. Dangerous areas did not prevent him from continuing his search. Sometimes, he was limited to a cage underwater but that did not bother him. At least, he was still able to take photographs of the underwater creatures. Larry's first expedition without his father was in the Cayman Islands. There were numerous diving spots in the area and Larry was determined to visit all of them. Fortunately for him, a man offered to take him around the different spots for free. Larry did not even know what the time was, how many spots he dived into or how many photographs he had taken. The diving spots afforded such a wide array of fish and sea creatures that Larry saw more than thirty varieties of creatures. Larry looked at his daughter. She looked as excited as he had been when he was her age. He hoped she would be able to continue the family tradition. Already, she looked like she was much braver than Larry had been then. This was the key to a successful underwater expedition.【缺少答案,请补充】
In the mid-1950s, I was a somewhat bored early-adolescent male student who believed that doing any more than necessary was wasted effort. One day, this approach threw me into embarrassment. In Mrs. Totten's eighth-grade maths class at Central Avenue School in Anderson, Indiana, we were learning to add and subtract decimals (小数). Our teacher typically assigned daily homework, which would be recited in class the following day. On most days, our grades were based on our oral answers to homework questions. Mrs. Totten usually walked up and down the rows of desks requesting answers from student after student in the order the questions had appeared on our homework sheets. She would start either at the front or the back of the classroom and work towards the other end. Since I was seated near the middle of about 35 students, it was easy to figure out which questions I might have to answer. This particular time, I had completed my usual two or three problems according to my calculations. What I failed to expect was that several students were absent, which threw off my estimate. As Mrs. Totten made her way from the beginning of the class, I desperately tried to determine which maths problem I would get. I tried to work it out before she got to me, but I had brain freeze and couldn't function. When Mrs. Totten reached my desk, she asked what answer I'd got for problem No. 14. "I...I didn't get anything," I answered, and my face felt warm. "Correct," she said. It turned out that the correct answer was zero. What did I learn that day? First, always do all your homework. Second, in real life it isn't always what you say but how you say it that matters. Third, I would never make it as a mathematician. If I could choose one school day that taught me the most, it would be that one.【缺少答案,请补充】