单项选择题
Hedges are used in scientific writing due to the following reasons except ______________.
A．hedges are considered as a strategy of being more precise in reporting results
B．authors try to appear humble rather than arrogant or all-knowing
C．hedges are used as a strategy to present unproven claims with certainty
D．authors tone down their statements in order to reduce the risk of opposition
Hedges are used in scientific writing due to the following reasons except ______________.
A．hedges are considered as a strategy of being more precise in reporting results
B．authors try to appear humble rather than arrogant or all-knowing
C．hedges are used as a strategy to present unproven claims with certainty
D．authors tone down their statements in order to reduce the risk of opposition