GRE Text Completion: JiJing 1373-GRE填空机经1373题 - LV6Q5QU9VN7K96RGA

Suspicion is arguably a natural self-protective instinct essential to the survival of individuals and societies: a human being or community that is totally ____________ is inviting trouble. A. exultant B. regressive C. reclusive D. ingenuous E. apprehensive