题目

Some people are so rude. Who sends an e-mail or a text message that just says “Thank you?” Who leaves a voice mail message rather than texts you? Who asks for a fact easily found on the Internet? 【1】Maybe I’m the rude one for not appreciating life’s little courtesies(礼节). But many social norms(规范) just don’t make sense to people drowning in digital communication.Take the thank-you note. Daniel Post Senning, a coauthor of Emily Post’s Etiquette，asked, “At what point does showing appreciation outweigh the cost?”【2】 Think of how long it takes to listen to one of 直接写结果：27×3=1÷13=1-12-13=58×23=3-4×34=16×12=29÷35=12+712=1-16-13=34-12=