题目

Have you ever received a gift that was so clearly not your taste that you wondered if perhaps it had been handed to you by mistake？Worse，have you ever given a present and watched your friend look as though she had opened the wrong box? Maybe she responded with a polite “Why, thank you,” but you knew you had missed the mark. Why do presents sometimes go wrong？And what do your choices（good and bad）reflect about your personal qualities？ Choosing the right gift is an art，I believe. It calls for empathy---the ability to put yourself into someone else’s head and heart. We’re al如图，在△ABC中，∠B=30°，BC的垂直平分线交AB于E，垂足为D．若ED=5，则CE的长为（） A．10   B．8   C．5   D．2.5