International trade occurs when a country does not have enough of a particular item to meet its needs.

International trade occurs when a country does not have enough of a particular item to meet its needs.

A.当一个国家没有足够的某一特定商品来满足自身需求时，就需要有国家贸易。

B.当一个国家没有足够的特别商品来满足自身需求时，就需要有国家贸易。

C.国际贸易发生在一个国家没有足够的物品来满足其需求的时候。

D.当一个国家没有足够的商品来满足自身需求时，就需要有国家贸易。

正确答案是A