题目

假如你是李华, 你的美国笔友Bill给你发了一封电子邮件, 想了解你的梦想职业。请认真阅读下面的邮件, 根据信中的内容和你的实际情况给他写封回信。To: lihua@ china. comFrom: bill006@ america. comSubject: Your dream jobDear Li Hua,Our teacher told us China is developing fast. You are lucky enough to live in China.Would you please tell me about your dream job in the future?◆What is your dream job?◆ Why do you like the job?◆ Do you think your personality is suitable for the job? Why or why not?◆ What do you need to do for your dream job?如图所示，实线为电场线，虚线为带电粒子(不计重力)的运动轨迹，电场中A、B两点的电势分别为φA、φB，粒子在A、B两点的速度大小分别为vA、vB，加速度大小分别为aA、aB，电势能分别为EpA、EpB，则下列关系中正确的是(　　)A．φA>φB                  B．vA>vBC．aA>aB                    D．EpA>EpB