题目：
选择题
中国现有草地面积3.9亿公顷，其中可利用面积3.2亿公顷,居世界第三位。
- A. There is 390 million hectares grassland in China. Among these hectares, we can use about 320 million hectares, and it makes China ranking the third in the world in the area of usable grassland.
- B. China has a grassland area of 390 million hectares, of which about 320 million hectares can be used, which places China third in the world in the area of usable grassland.
- C. There is 390 million hectares grassland in China, of which about 320 million hectares can be used, which places China third in the world in the area of usable grassland.
- D. China has a 390 million hectares grassland. In the grassland, about 320 million hectares can be used, and it places China third in the world in the area of usable grassland.
答案：
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