题目

Some people are successful, while others may not. This is because some people have some qualities, which others do not.The first thing you must remember is that in order to be successful, you must have optimism(乐观). If you do not look forward to winning, you will not try as hard as those who look forward to winning. You also need to have a clear aim and a reason for doing something because motivation(动机) is a key to achieving success. If you do not have an aim, then you will not be motivated to work hard and put your performance under the microscope (显微镜) to make sure that 东西二京是指A.西汉时的长安和洛阳B.东汉时的长安和洛阳C.西汉的洛阳，东汉的长安D.西汉的长安，东汉的洛阳