57 （）

When Williams began working on his book, he __________ .

• A、was paid $ 35,000 

• B、learned to paint

• C、had already buried the treasure

• D、did not know what the story would be about

This passage mainly talks about __________ .

• A、the tools made by "Flores Human" 

• B、the language used by "Flores Human"

• C、the evolution of "Flores Human" 

• D、the major surprising findings about "Flores Human"