rice是可數名詞嗎

例句：

1、Thai land exports its fine rices around the world.

泰國將精米出口到世界各地。

2、The land is cultivated with rice, cotton and vegetable.

地裏種着水稻、棉花和蔬菜。

3、Rice measures more easily than flour.

大米比麪粉容易計量。