【单选题】The residents of Vegopia spend all of their income on cauliflower, broccoli, and carrots. In 2010, they buy 100 heads of cauliflower for $200, 50 bunches of broccoli for $75, and 500 carrots for $50. ...
【简答题】阅读理解。 Carrots are grown on farms and in small family gardens throughout the world. They are easy to grow and easy to harvest. They have a pleasing taste. When people think about carrots, a picture of ...