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原文: Don't drop it! A:What are you going to do with that vase,Penny? B:I am going to put it on the table,Sam. A:Don't do that .Give it to me. B:What are you going to do with it? A:I'm going to put it here,in front of the window. B:Be carefull !!  Don'…
原文: Making a bookcase. A:You are working hard,George. What are you doing . B:I am making a bookcase.Give me that hammer please,Dan. A:Which hammer? This one? B:No,not that one. The  big one. A:Here you are. B:Thaks ,Dan. A:What are you going to do no…
原文: Our village . This is a photograph of our village. Our village is in  a valley. It is between to hills. The village is on the river. Here is another photograph of the village. My wife and I are walking along the banks of the river. We are on the…
原文:A fine day. It is a fine day today. There are some clouds in the sky. But the sun is shining. Mr.Jones is with his family. They are walking over the bridge. There are some boats on the river. Mr.Jones and his wife are looking at them. Sally is loo…
原文:Where is Sally? A:Where is .. B? B:She is in the garden,A. A:What's she doing? B:She is sitting under the tree. A:Is .. in the garden ,too? B:Yes ,he is. He's climbing the tree. A:I beg your pardon? Who's climbing the tree? B:.. is. A:What about t…
---恢复内容开始--- 程序的异常:报错之后程序终止. 异常处理搭配使用: l = ['创建老师','创建学校'] while True: try: for num,item in enumerate(l,1): print(num,item) index = int(input('num:')) print(l[index - 1]) break except ValueError: print('请输入一个数字:') except IndexError: print('请输入选择范围内的数…
  上周Erlang讨论群里面提到lists的++实现,争论大多基于猜测,其实打开代码看一下就都明了.贴出代码截图后有同学问这代码是哪里找的?   "代码去哪里找?",关于Erlang源码阅读的路线图江湖上只有一份残卷了.我觉得"代码在哪儿?"这类问题是信息不对称造成的,本身难度不大,就像<贫民窟的百万富翁>里面的情节:贾马尔知道市井生活中的零零碎碎却说不出国徽上的文字,我们就从电影中的这一幕开始本文的探索吧     内景,演播室—夜晚 普瑞姆:这个问题…
Friday the Thirteenth Is Friday the 13th really an unusual event? That is, does the 13th of the month land on a Friday less often than on any other day of the week? To answer this question, write a program that will compute the frequency that the 13t…
Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. For example, 123 -> "One Hundred Twenty Three" 12345 -> "Twelve Thousand Three Hundred Forty Five" 1234567 -&g…
第18章---高度难题 1,-------另类加法.实现加法. 另类加法 参与人数:327时间限制:3秒空间限制:32768K 算法知识视频讲解 题目描述 请编写一个函数,将两个数字相加.不得使用+或其他算数运算符. 给定两个int A和B.请返回A+B的值 测试样例: 1,2 返回:3 答案和思路:xor是相加不进位.and得到每一个地方的进位.所以,用and<<1之后去与xor异或.不断递归. import java.util.*; public class UnusualAdd { pu…