Unit 3 导读·话题妙切入 同步讲解 【新教材】外研版（2019）选择性必修第二册

The golden age is before us, not behind us. —Mark Twain 黄金时代在我们面前而不在我们背后。 ——马克·吐温 The challenge for our generation is to create a world where everyone has a sense of purpose. —Zuckerberg 我们这代人面临的挑战，是创造一个人人都能有使命感的世界。 ——扎克伯格 Comprehensive reform demands dedication, courage and patience. —Reinhard Mohn 全面改革需要奉献、勇气和耐心。 ——莱恩哈德·摩恩 Every generation needs regeneration. —Spurgeon 每一代都需要更新。 ——斯珀吉翁 It was the best of times, it was the worst of times；it was the age of wisdom, it was the age of foolishness；it was the epoch of belief, it was the epoch of incredulity；it was the season of light, it was the season of darkness；it was the spring of hope, it was the winter of despair；we had everything before us, we had nothing before us；we were all going direct to Heaven, we were all going direct to the other way. Can you imagine a world without the Internet? It's surprising to think about it. Now, China has more than 162 million Internet users, according to the China Internet Network Information Centre