What type of context clue is used in the sentence Their greatest fear was of a conflagration, since fire would destroy their flimsy wooden settlement before help could arrive? （ ）
A、Definition.
B、Example.
C、Synonymy.
D、Hyponymy.
【正确答案】：C
【题目解析】：本题考查提供线索以猜测词义。语境提示包括以下几种：（1）Definition 定义；（2）Example 举例；（3）Synonymy 同义关系；（4）Hyponymy上下义关系。Synonyms or synonymous expressions are frequently employed to explain new words. In this sentence conflagration and fire are synonyms, so the meaning of conflagration is very clear.同义词或同义表达式频繁地被作者们用来解释新词。在这句话中conflagration和fire是同义词表示“火”。题干中的句意：他们最大的担心是大火，因为火灾会在援助到来之前就摧毁他们脆弱的木屋。故选C。
