单选题 The teacher spoke highly of such ______ as loyalty, courage and truthfulness shown by his students.
[A] virtues [B] features [C] properties [D] characteristics

【正确答案】 A
【答案解析】本句中的such as表示举例，后面的名词分别为loyalty(忠诚)，courage(勇敢)和truthfulness(诚实)，是对空格处名词的解释。句中的三个名词归结起来都属于应当具有的“美德”，因此应选virtues。句意：老师高度评价了学生们所表现出的忠诚、勇敢和诚实的美德。