TOEFL Reading: ETS-TOEFL阅读机经 - 7CWNZ16FL748FY3BL$

According to paragraph 4, all of the following were true of Venice's system of cisterns and gome EXCEPT A. It was developed over several centuries B. It collected rainwater C. It was maintained with fees paid by the public D. It reflected the social and economic diversity of the city of Venice