第18题: [单项选择]We met Mary and her husband at a party two months ago. ________ we've had no further communication. A. Thereof B. Thereby C. Thereafter D. Thereabouts 参考答案:A 答案解析:[解析]考点:词汇辨析。thereof表示“在其中”、“关于那一点”(置于所修饰的名词后)。thereby表示“由此,从而”(置于所修饰的动词前)。thereafter表示“之后”、“随后”。ther