题目

Remembering names is an important social skill. Here are some ways to master it.Recite and repeat in conversation. When you hear a person’s name，repeat it. Immediately say it to yourself several times without moving your lips. You could also repeat the name in a way that does not sound forced or artificial. Ask the other person to recite and repeat. You can let other people help you remember their names. After you’ve been introduced to someone，ask that person to spell the name mad pronounce it correctly for you. Most people will be pleased by the effort you’re making to learn their n复数（为虚数单位），在复平面内所对应的点在(     )A．第一象限 B．第二象限 C．第三象限 D．第四象限