新托福阅读备考：Lava
了解托福阅读文章的一些背景知识，对于提高托福阅读做题准确率，拓展知识储备都很有好处，为大家带来托福阅读背景知识，希望对大家有所帮助。 Lava is magma that breaks the surface and erupts from a volcano. If the magma is very fluid, it flows rapidly down the volcano’s slopes. Lava that is more sticky and less fluid moves slower. Lava flows that have a continuous, smooth, ropy, or billowy surface are called pahoehoe (pronounced pah HOH ee hoh ee) flows; while a a (pronounced ah ah) flows have a jagged surface composed of loose, irregularly shaped lava chunks. Once cooled, pahoehoe forms smooth rocks, while a... [ 查看全文 ]新托福阅读备考：Lava的相关文章
新托福阅读备考：A Brief History of the Guitar
了解托福阅读文章的一些背景知识，对于提高托福阅读做题准确率，拓展知识储备都很有好处，为大家带来托福阅读背景知识，希望对大家有所帮助。 There is evidence that a four string, guitar-like instrument was played by the Hittites (who occupied a region now known as Asia M...[ 查看全文 ]专题推荐:
专题推荐:
专题推荐:
专题推荐:
