二、听力理解：请听下面的对话，根据对话内容进行判断，正确写“T”错误写“F”。 Listen to the dialog and decide whether the following statements are True(T) or False (F). 点击听音频 They will sell the books in a supermarket next month.__1__ 2 . Menglin Publishing House has been engaged in charity work for many years.__2__ 3 . It is not decided when and where the sale will be held.__3__ 4 . George will make a plan for the book sale with Melinda together.__4__ 5 . George asks Melinda to hand in the plan next week.__5____3__(完形填空) .T .F
国家标准（GB2893－82）中规定的四种安全色是(单选题)