单选题 Psychologists agree that human beings have a strong need to ______ their time; having too much idle time can be as stressful as having none at all.

【正确答案】 C
【答案解析】(structure组织，安排)。句意为：心理学家们一致认为，人很有必要安排时间，有过多的闲暇时光和根本没有闲暇时光一样让人紧张。A．threaten威胁；B． annihilate消灭；D．punctuate加标点于，强调。