Deserts dry areas with no vegetation cover more than one-third of the Earth's land surf

问题补充：

Deserts, dry areas with no vegetation, cover more than one-third of the Earths land surface.

A. surprisingly

B. eventually

C. permanently

D. virtually

答案：

A. surprisingly

B. eventually

C. permanently

(答案→)D. virtually

解析：virtually(=almost, very nearly; in every way that is really important)几乎，事实上，实际上；My book is virtually finished; I have only a few changes to make in the writing.( 我的书几乎写完了,我只要在作品中再作一点修改就可以了。)surprisingly令人惊奇的；eventually最终的；permanently永久的。