专四

单选题请在第(50)处选择正确答案_______

A．open 
B．uncover 
C．recover
D．expose

参考答案：B进入在线模考
B。考查动词词义辨析。open意为“打开，开放”；uncover意为“揭开，揭露”；recover意为“重新获得；恢复”；expose意为“使暴露，使曝光”，结合上下文可知此处是“揭露，揭开”之意，故选B。expose之后需接to。

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