一般而言,供给曲线是一条()
A.垂直直线
B.向右下方倾斜的曲线
C.向右上方倾斜的曲线
D.水平直线
参考答案:C
环节动物的主要特征是身体由许多形态相似的 组成。
What’s the difference between Wal-Mart in China and in USA().
A. It’s not big.
B. Trust-Mart is a branch of Wal-Mart.
C. Wal-Mart permits labor unions into its stores.
D. Wal-Mart is loath to give discounts.