练习说明：
周一到周五是16个单词 + 一段翻译（单词做到认识就好，快速记忆多次重复。翻译关注紫色部分的表达，可以进行互译检测：看到中文回忆英文，看到英文回忆中文）
周六真题及其详解，再次巩固词汇体会完形题目
周日文章结构图，可以对照之前的翻译练习再次巩固
前期大家可以多关注单词。
The Internet affords anonymity to its users, a blessing to privacy and freedom of speech. But that very anonymity is also behind the explosion of cyber-crime that has swept across the Web.
Can privacy be preserved while bringing safety and security to a world that seems increasingly lawless?
afford负担得起，买得起；提供，给予
anonym：an-无+ onym-表示“name名字”→匿名；假名
anonymous：无名的；无特色的
anonymity：匿名
onymous 署名的
antonym 反义词
synonym 同义词
very + 名词
1. (used to add emphasis to a noun) exact or particular（用于强调名词）同一的，恰好的，正是的
What ended up happening was the very thing we feared the most.后来发生的事情正是我们最害怕的。
2.used to describe or emphasize the furthest point of something最远端的；末端的
We were at the very end of the queue, so we didn't manage to get any tickets.我们排在队伍最后面，所以没有买到票。
behind
1.responsible for or the cause of是…背后的原因
Marie Curie was the woman behind enormous changes in the science of chemistry.居里夫人使整个化学领域发生了巨变。
behind常见意思是：在…后面；落后于
在本文中behind的意思是指背后的原因
But that very anonymity is also behind the explosion of cyber-crime that has swept across the Web.
这里后一个that引导定语从句，修饰cyber-crime
