Three Gorges Dam--Dr. Paul BenjaminOne of the world’s ___1___ dams___2___ miles long___3___ feet tall___4___ times larger > the Hoover Damreservoir ___5___ miles long___6___ workers working together to build this damWhy was it constructed?1. To provide a ___7___ ___8___ of energy2. To help ___9___ the water in the Yangtze RiverChinese authorities estimated that in the ___10___ century, ≈ ___11___ were killed by the floods. Protecting people’s lives is a priority. The dam was designed to protect people’s lives by ______12______3. To help China’s ___13___∵The dam makes the river water ___14___∴______15______Problems/Risks1. Put a lot of ___16___ underwater① Many ___17___ and ___18___ will probably ___19___② Put many very old ___20___ and ___21___ sites underwater2. Have a ___22___ ___23___ on the environment① Factories flooded by the reservoir are ___24___ the river.② An increase in erosion, or the ___25___ ___26___ of soil and rock near the river3. Earthquakes are another ___27___ in this areaSo ___28___ ___29___[音频]