大学英语六级完形填空练习一
日期:2013-01-02 13:35
Historically, humans get serious about avoiding disasters only after one has just struck them. __62__ that logic, 2006 should have been a breakthrough year for rational behavior. With the memory of 9/11 still __63__ in their minds, Americans watched hurricane Katrina, the most expensive disaster in U.S. history, on __64__ TV. Anyone who didnt know it before should have learned that bad things can happen. And they are made __65__ worse by our willful blindness to risk as much as our __66__ to w
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