The Eisteddfod is a festival ______ entirely to music and literature in the Welsh Language and held for week in August in Wales.

A．began to build a monumental building together with Walter Chrysler
B．joined in the construction of a tall building along with Walter Chrysler
C．kept a secret of his own skyscraper while he joined Walter Chrysler
D．did not know how taller his building would be than Walter Chrysler's

A．There was a small airport on the top of the building.
B．Walter Chrysler kept the height of his building secret.
C．It was Shreve, Lamb & Harmon who began the plan.
D．John Jacob Raskob was both inventive and predictiv