[单项选择]Few creations of big technology capture the imagination like giant dams. Perhaps it is humankind’’s long suffering at the mercy of flood and drought that makes the idea of forcing the waters to do our bidding so fascinating, But to be fascinated is also, sometimes, to be blind. Several giant dam projects threaten to do more harm than good. 　　The lesson from dams is that big is not always beautiful. It doesn’’t help that building a big, powerful dam has become a symbol of achievement for nations and people striving to assert themselves. Egypt’’s leadership in the Arab world was cemented by the Aswan High Dam. Turkey’’s bid for First World status includes the giant Ataturk Dam. 　　But big dams tend not to work as intended. The Aswan Dam, for example, stopped the Nile flooding but deprived Egypt of the fertile silt that floods left―all in return for a giant reservoir of disease which is now so full of silt that it barely generates electricity. 　　And yet, the myth of controlling the wate
A. They bring in more fertile soil.
B. They help defend the country.
C. They strengthen international ties.
D. They have universal control of the waters.

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