题目

There have been many great inventions or things that changed the way we live. The first great invention was the one that is still very important today--the wheel. This made it easier to carry heavy things and to travel long distance. For hundreds of years after that there were few inventions that as much effect as the wheel. Then in the early 1800s the world started to change. There was little unknown land left in the world. People didn't have to explore much any more. They began to work instead to make life better. In the second half of the 19th century many great inventions were ma多选当我们踏着欢快的青春节拍走向自立自强之路时，每个人都有自己应当承担的责任。对于“责任”一词理解正确的是A．责任是做好自己应当做的事B．责任是不应该做违反道德和法律的事C．责任是每一个公民应有的权利D．责任是指在社会生活中扮演好每一个角色