【題組】30.(AB)More than 20 years later, at a cost of over $1 billion, the physical restoration of the river is now complete.(AC) The designation entails special protections and future funding for conservation work.(AD) Sixty years ago, the Kissimmee meandered for more than 100 miles from the Kissimmee Chain of Lakes to Lake Okeechobee.(AE)As the wetlands have come back, so have the birds.(BC) When the channelization was completed in the 1970s, everybody realized it was a mistake.(BD) The channel acted like a pipe, moving water quickly off the landscape to Lake Okeechobee, and then to the ocean.