---Imagine you are outside when earthquake es. What should you do?
----Go to open space away from buildings or treeA.the; theB.the; anC.an; theD.an; an
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D解析考查冠词。第一空泛指地震这一类事物,用an earthquake来表示。第二空用an表示泛指一块空地。句意:—想象一下,当地震来临的时候,你在外面,你会做什么?—到一块远离大楼和树木的空地上。故D正确。