题目内容：
Professor Deiner has spent many years studying__________ in happiness.参考答案：
答案解析：
单选题：Professor Deiner has spent many years studying__________ in
- 题目分类：综合类
- 题目类型：单选题
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This is not typical of English, but is a feature of the Chin
This is not typical of English, but is a feature of the Chinese language.A．parti
The software company seems to think girls would be more inte
The software company seems to think girls would be more interested if __________
Energy specialists may be interested inof hurricanes.
Energy specialists may be interested inof hurricanes.
2006～2011年，罚没款最多的一年比最少的一年多约( )倍。
2006～2011年，罚没款最多的一年比最少的一年多约( )倍。A．2．1 B．3．1 C．1．2 D．2．2
下列选项属于过程型激励理论的是：
下列选项属于过程型激励理论的是：A．双因素理论 B．强化理论 C．需求层次理论 D．期望理论