题目

John was dismissed last week because of his____attitude towards his job. A．informal    B．casual    C．determined     D．earnest 答案：B 解析: 形容词词义辨析。根据句意：“约翰上周被解雇是因为他对工作满不在乎的态度”，只有B项符合题意。informal非正式的；determined坚定的；earnest认真的。

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