官方真题Official7托福阅读词汇真题练习——diffused&emerged

在托福阅读备考中，想要快速的提升自己的托福阅读能力，除了不断的累积自己的词汇和句型之外，从官方真题Official练习入手也不失为一个不错的方法。那么，在以下内容中我们就为大家带来官方真题Official7托福阅读词汇，希望能为大家托福阅读备考带来帮助。

Paragraph 1: There is evidence of agriculture in Africa prior to 3000 B.C. It may have developed independently, but many scholars believe that the spread of agriculture and iron throughout Africa linked it to the major centers of the Near East and Mediterranean world. The drying up of what is now the Sahara desert had pushed many peoples to the south into sub-Sahara Africa. These peoples settled at first in scattered hunting-and-gathering bands, although in some places near lakes and rivers, people who fished, with a more secure food supply, lived in larger population concentrations. Agriculture seems to have reached these people from the Near East, since the first domesticated crops were millets and sorghums whose origins are not African but west Asian. Once the idea of planting diffused, Africans began to develop their own crops, such as certain varieties of rice, and they demonstrated a continued receptiveness to new imports. The proposed areas of the domestication of African crops lie in a band that extends from Ethiopia across southern Sudan to West Africa. Subsequently, other crops, such as bananas, were introduced from Southeast Asia. 【官方真题Official7- Agriculture, Iron, and the Bantu Peoples】

1. The word “diffused” in the passage is closest in meaning to

○ emerged

○ was understood

○ spread

○ developed

答案：(3)