题目

Dear Mr. Wolfson， The purpose of this letter is to inform you of one of our citizens who I believe should receive some special recognition for dedicated (敬业的) community service. The person I recommend is Elizabeth Samuelson. I believe you know her in your position as volunteer coordinator (协调员)． I have known Elizabeth for more than 20 years as both a friend and a neighbor. During that time I have seen her work tirelessly on scores of community projects and committees. As far as I know, she has never received any kind of recognition from the community for her work. I belie在△ABC中，若=（ ）A．60°B．30°C．120°D．150°