【简答题】The term biological clock is applied to the means, which living things 【M1】______ adjust their activity patterns, without any obvious cue, the time of day, or 【M2】______ the month, or the year. They a...
【单选题】War may be a natural expression of biological instincts and drives toward aggression in the human species. Natural (1)_____ of anger, hostility, and territoriality are expressed (2)_____ acts of viole...