题目

The world is a colorful landscape of different languages, skin colors, and different cultures. It's important to have a good understanding of different cultures in order to become a well-rounded person【1】One way is to read books written by authors from a particular culture. Reading works by authors who have a close relationship with a particular culture allows people to gain an authentic glimpse into the food, music, language, religion, and way of a life of a particular group of people.【2】Another way to learn about different cultures is to try to learn a foreign language.【3】A perso如图所示，直线a，b被直线c所截，且∠1+∠2=180°，直线a与直线b平行吗？为什么？