【题目】____ to everyone the importance and value of these historic sites, the government has strengthened regulations to protect them.
A. To stress B. Stressing
C. Having stressed D. Stressed
在线课程【答案】A
【解析】
试题分析：句意：为了给每个人强调这些历史遗址的重要性和价值，政府已经加强了保护他们的规定。此处不定式表目的，故选A。