题目内容：
Poor grades are usually the result of___________.
A.poor sleeping habit B.laziness C.lack of sleep D.inability to form good study habits
参考答案：
答案解析：
选择题：Poor grades are usually the result of___________.A.poor sleeping habit B.lazines
- 题目分类： 职业能力测验
- 题目类型：选择题
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