Look at the picture to complete the question 14- 15. The following is Beibei's evaluation of China's topography. What is unreasonable is that (a) it is beneficial for water vapor from the ocean to reach the inland and form.
China's topography is high in the west and low in the east, showing a three-stage distribution. The influence of this terrain on the climate in China is conducive to the warm and humid air flow on the ocean going deep into the inland of China and forming abundant precipitation; The impact on rivers is that most rivers flow eastward, connecting east and west traffic. At the junction of stairs, there is a big river drop, which is rich in water. Option ABC is correct and does not meet the meaning of the question.
Therefore, choose: d.