单项选择题




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单项选择题
When facts are （） and data hard to come by, even scientists occasionally throw aside the professional pretense of （）and tear into each other with shameless appeals to authority and arguments that are unabashedly ad hominem.

A．elusive...objectivity
B．established...courtesy
C．demonstrable...neutrality
D． ineluctable...cooperation
E．hypothetical...scholarship
单项选择题
C
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