单选题 As skies fill with millions of migrating birds, European scientists say the seasonal miracle appears to depend on a seeming______: The fatter the bird, the more efficiently it flies.(浙江大学2010年试题)
【正确答案】 D
【答案解析】解析：在给出的选项中：interruption“中断”；description“描述”；qualification“资格”；contradiction“矛盾”。contradiction一词总结了原句中解释性分句表达的意思。所以，正确答案是D。