The banks, where they are coming, but when?
External means outside basically
<span>The central idea of this passage is D. The Egyptian
pyramids are familiar even to people who have never visited them.
The author clearly starts by saying that, although he has never seen the
pyramids before, he knew exactly what they’re supposed to look like. Many times
before he has seen them in pictures, so it is understandable that the idea of what
the pyramids look like is already in his head. Although he then continues to
talk about the size of the pyramids, there is still a tone of familiarity. </span>
