中国现有宜农荒地3500 万公顷，其中可开垦为耕地的约有1470万公顷。（  ）

中国现有宜农荒地3500 万公顷，其中可开垦为耕地的约有1470万公顷。（  ）
A、China now has 35 million hectares of wasteland which are suitable for farming of this, about 14.7 million hectares can be reclaimed.
B、.China now has 35 million acres of wasteland which are suitable for farming, of this about 14.7 million acres can be reclaimed.
C、China now has 35 million acres of wasteland W hich are suitable for farming, of this, about 14.7 million acres can be reclaimed.
D、China now has 35 million hectares of wasteland which are suitable for farming. Of this, about 14.7 million hectares can be reclaimed.
【正确答案】：D
【题目解析】：公顷用hectare表达，of this意为“在这其中”，在后面句子中作状语，由于后面是一个完整的句子，of this中的O要大写，之前要用句号，而不是逗号。