The search for buried treasureha

The search for buried treasurehas been traditional quest. It was a(n) 16  of pirate gold thatlured Jim Hawkins in Robert Louis stevenson's novel Treasure Island. It wasreal life  17  of gold and artifacts for archaeologist HowardCarter in 1922, when he found the tomb of Egypt's King Tutankhamen. Today themore likely search is for the gold, silver,jewels, and other wealth 18  to the of the seas in shipwrecks. So great is the treasure restingat the bottom of the seas  19  many adventurers explore theoceans every year,  20  the most advanced technology—sonar equipment, smallsubmarines and undersea robots.

There are records of more than8,000  21  having sunk off the east coast of the Americas 22  an uncounted number in the Pacific. Perhaps the most famous ofthese was the Titanic, the luxury ocean liner that  23  aniceberg and sank in 1912. The wreck of the Titanic was found in September 1985, 24  salvaging(打捞) it is a very difficult prospect, as it was found  25 a depth of 13,000 feet.

Treasure hunting is 26  mining for gold silver, and other precious minerals. Mining is asearch for  27  . Treasure hunting is search for actualwealth, the processed commodities  28  gold and silver bars,coins and jewelry. Government policy regarding the  29  of treasurevaries from nation to nation. United States courts have normally 30  found treasure to the finder. In Great Britain it belongs to thegovernment.
请选择恰当选项填入（21）
A、treasures
B、vehicles
C、ships
D、equipment
【正确答案】：C