单项选择题

The rocks are very big with______ of colors on them.

A．shapes
B．rails
C．bands
D．marks
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单项选择题
The prevailing union of passionate interest in detailed facts with equal devotion to abstract ______is a hallmark of our present society; in the past this union appeared, at best, ______and as if by chance.
A．data... extensively
B．philosophy... cyclically
C．generalization... sporadically
D．evaluation... opportunely
单项选择题
Punishment for violating moral rules is much more common than reward for following them; thus, ______the rules goes almost ______in society.
A．association with... undefended
B．adherence to... unnoticed
C．affiliation of... uncorrected
D．opposition to... unchecked
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