23. The word "strikingly" in line 4 is closest in meaning to (A) aggressively (B) specifically (C) noticeably (D)occasionally

21. What is the main idea of the passage? (A) Various types of traditional building materials strongly influenced modem architectural design. (B) Changing architectural styles affected the character of cities. (C) New architectural forms evolved in response to the changing needs of society. (D) Technological advances affected conventional methods of building construction.