China southern winter climate cool, moist, summer is hot, humid climate. The main crops have rice. While north China in winter cold, dry, hot summer, more rain. The main crops include wheat
China has several thousands years' history in growing wheat.
it has been several thousands yeare since rice was planted in China.
Lots of rice are planted in southern China every year.In southern China, lots of rice are planted every year.这句只适合用被动语态,因为中国南方无法担任主语。
The history of planting rice in China may date back to thousands of years ago.
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