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阅读达人来帮忙，，，做几道阅读题，，， 1.a. Describe the evolution of Chicago’s drinking water system from 1834 up to 1861. (8 marks)Lake Michigan was the original water resource for Chicago and removed consequently. However, the point of intake was near the dirty Chicago river causing the water to be of poor quality. Getting enough water was also a problem. People had try to make the quantity and quality of the water better, however, they failed. The engineer of Board of Public Works had discern and evaluate them, and a tunnel had been recommended by Chesbrough in 1861. b. c. d. 2.a. b. c. 1a. (1)In the past, people from Chicago used Lake Michigan as their water resource. 2c. (1) The benefits of Chicago's system include: (1)elimination of untreated water released into streams, (2) flood control (3) minimization of water pollution, and (4) storage before water treatment. 2c. (2) Chicago's sewer system brings many benefits.

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