民国初年上海流行单页公历“月份牌”，其绘画主题多为女性。如图是一张“月份牌”，它可以用来研究近代（　　）

①服饰变革   ②交通变化  ③女性地位   ④礼仪革新。

    A small plane had some trouble with its engine while it was in the high sky. The pilot knew that there was nothing he could do to keep the plane long in the air, so he rushed back to where his three passengers sat and explained the dangerous situation. At last he said, "I am a married man with three children. I am sorry to tell you that there are only three parachutes aboard. " With that he took up one and jumped out.
    One of the passengers reacted quickly. “I am a great man, I am the smartest man and the world can not do without me. "With that he too jumped out.
   The other two passengers, an old man and a young soldier, were quiet for a moment. At last the old man said, “Son, I'm old and have lived a full life. I am ready to meet my God.”
“You will have to give up that,”the young man said, smiling,“The world's smartest man just jumped out with my backpack.”