ＳＵＰＰＯＳＥ ＳＯＭＥＯＮＥ ＧＡＶＥ ＹＯＵ Ａ ＰＥＮ假如给你一支笔

李　君

Suppose someone gave you a pen—asealed，solid-colored pen.

假如有人送你一支笔，一支不可拆卸的单色钢笔。