题目内容：
[填空题,5分] __ the age of eighteen, he had written two books.
参考答案：
选择题：[填空题,5分] __ the age of eighteen, he had written tw
- 题目分类：河南农业大学-大学英语
- 题目类型：选择题
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项目的一个实例是（ ）。
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[填空题,2.4分] At the time I admired his ______ (youth
[填空题,2.4分] At the time I admired his ______ (youth) enthusiasm.