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    Sun Yat-sen,{#blank#}1{#/blank#} was the leader of the 1911 Revolution, first suggested the idea of a dam across the Yangtze River in 1919. Three quarters of China's energy {#blank#}2{#/blank#} (produce) by burning coal. In 1993, China used 1.2 billion tons of coal for heating and generating{#blank#}3{#/blank#}(electric).{#blank#}4{#/blank#} (fortunate), burning coal causes serious air pollution and increases global warming. The dam will generate electricity equal{#blank#}5{#/blank#} about 40 million tons of coal without causing so much air pollution.