题目内容：
提高现在耕地单位面积产量有潜力。A. Increasing the yield per unit area on the existing cultivated land is potential.
B. It is potential for increasing the yield per unit area on the existing cultivated land.
C. There is potential for increasing the yield per unit area on the existing cultivated land.
D. It is potential to increase the yield per unit area on the existing cultivated land.
参考答案：