57. According to the passage, what happened simultaneously with towns' becoming larger in size? A) More primitive engineering was brought into play
B) the water occupants started to misuse water.
C) water providing points became more distant.
D) The Roman Empire prospered.
58. All of the following statements are TRUE, EXCEPT: A) Mainly because of irrigation systems it was possible to provide the humanity -with food.
B) In the greatest period of the Roman Empire water was
C) New engineering projects solved existing water problems.
D) Almost 50% of the world's electricity is based on falling