Which of the following factors is most likely to increase aggregate demand（）

A. Increasing real interest rates.

B. An expected decrease in future prices.

C. An increase in real wealth.

有位诗人坐船远眺，写下了著名诗句：“满眼风光多闪烁，看山恰似走来迎；仔细看山山不动，是船行。”诗人在诗词中前后两次对山的运动的描述，所选择的参照物分别是            和_          。