問題詳情：
短文中有10處錯誤，錯誤涉及一個單詞的增加、刪除或修改。
增加：在缺詞處加一個漏字元號（∧），並在此符號下面寫出該加的詞。
刪除：把多餘的詞用斜線（＼）劃掉。
修改：在錯的詞下劃一橫線，並在該詞下面寫出修改後的詞。
注意：1.每處錯誤及其修改均僅限一詞；
2.只允許修改10處，多者（從第11處起）不計分。
Mao Zedong once wrote a poem in which he dreams of "walls of stone of hold clouds and rains tills a smooth lake rises in the narrow gorges" his dreams have been come power of the Yangtze River has been harnessed by the Three Gorges of China's energy is produced by burning coal,that causes serious air pollution and increases global efore,the dam will generate electricity equals to about 40 millions tons of coal without causing so many reservoir has flooded a lot of cities and than a million of people has moved form their t 800 historical relics have been submerged.
【回答】
med; back; ; 劃掉 h;
ver; l 劃掉
知識點：其他
題型：短文改錯
