According to the theory of "thought" devised by J.B. Watson, thinking is ___________.
A. talking to the soul
B. suppressed speech
C. speaking nonverbally
D. a nonlinguistic behavior
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According to the author, when we intend to describe our thoughts, ___________.
A. we merely report internal speech
B. neither words nor imagery works
C. we are overwhelmed with vague imagery
D. we sometimes can't think of appropriate words
去除龈下结石属于社区人群牙周健康的哪一级水平
A. 基本急诊保健
B. 一级水平
C. 二级水平
D. 三级水平
E. 四级水平
考察两组数据精密度之间是否有显著性差异，可采用
A. t检验
B. F检验
C. G检验
D. 法
E. 回归分析
It remains a mystery that how the ancient Egyptians could ___________ the huge stone blocks to build those pyramids.
A. hoist
B. tow
C. hurl
D. toss
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