【单选题】Donna can make a chair for about $100, she charges customers $150 to buy the chair, and customers perceive that the chair is worth $225. Donna's profit margin is
【简答题】.单项选择 ( ) 1. The Great Wall is wall in the world. A. long B. longer C. the longest D. the tallest ( ) 2. They are going to there a few days. A. stay, for B. stay, in ...
【单选题】Life is ____ roses, but with what Iam being equipped with by the top teachers in this elite (精英) school, I surely deserve a promising prospect. [ ]