According to the passage, the actions of the Tokugawa shoguns in their search for solvency
A. resulted in the exhaustion of the rnost easily worked deposits of silver and gold
B. raised the cost of living by pushing up prices
C. were far lower in yield than had originally been anticipated
D. acted as deterrent to trade
At the beginning of the 20th century (世纪) , the population was around 1700 million.
A. Right
B. Wrong
C. Doesn't say