单项选择题 The（）employed in this book is overly flamboyant,（）the scientific proof intended to corroborate it.

单项选择题 It is the mark of an educated mind to rest （） with the degree of precision which the nature of the subject （） and not to seek exactness where only an approximation is possible.

单项选择题 His undoubtedly aggressive behavior only served to further endear him to all who had dealings with him, for they recognized that behind the（）facade, there beat a compassionate heart.