宋元时期，江苏吴郡“地沃而物移，稼则刈麦种禾，一岁再熟”。这证明该地区在推行（    ）

文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号( ∧ )，并在其下面写出该加的词。

删除：把多余的词用斜线( \ )划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1.每处错误及其修改均仅限一词;2.只允许修改10处，多者(从第11处起)不计分。

    In the summer vacation, our family travelled to Xiamen and paid visit to my brother there.The journey we were walking on was long and bored. But as soon as I arrived, I fall in love with the city. The reason is because it is a very charming place.The streets are cleaning and the sky is blue. If you walk along the coast, you can feel the wind to blowing on your face. The sea is vast and sometimes you can find a boat or a ship. You may also do some fishing as far as it is permitted. Besides, I think the driver there drive too fast in the street. You can never be too careless when crossing the street.

裸子植物最丰富的国家是（　　）