问题 选择题
All the economists are working on   the financial crisis can be prevented, which has caused a huge loss throughout the world.
A.howB.when C.that D.why
答案

A

题目分析:本题考查宾语从句。句意: 所有的经济学家都致力于如何预防这场金融危机, 它对整个世界造成了巨大的损失。根据句意可知选A。

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