Variant 1 You could have come first and won the race if you … faster

20. 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 water.

21. Which of the following is the best title for the first paragraph of the text?

A) The worldwide demand for water. B) Irrigation systems full into disuse.

C) A description of Ancient water supplies. D) the history of the Roman Empire.