54- It is pointed out in the passage that ............. .
A) the method first used by man to extract iron from its ore is well known today
B) other materials have not completely replaced iron in modern times
C) meteors are still the primary source of iron
D) iron alloys are much less important in industry than pure iron
E) at no time has iron been considered as valuable as it is today
The question has often been asked why the Wright brothers were able to succeed in
an effort in which so many others had failed. Many explanations have been offered
but three reasons are most often cited. First, they were a team. Both men worked well
together, read the same book, located and shared information, talked incessantly
about the possibility of manned flight, and served as a consistent source of inspiration
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