精选优质文档-倾情为你奉上(3,4)重点词汇1. n.c 系统；体系；制度；方法 systematic adj 有系统的; 有条理的典例 The solar system includes the sun and its eight planets. 练习 根据意思完成句子。1). The _ _ (教育系统) operates very differently in the US and China.2). He introduced us a well-designed _ _ (铁路系统).2. vt. (laid, laid, laying) 把放下；摆设；铺(地毯) ；产(蛋)典例1). He laid his hand on my shoulder. 2). Who should we lay the blame on? 重点用法 lay短语：lay eggs 下蛋 lay sth. aside
