单项选择题

In an allergic reaction, the immune system mistakenly ______ a harmless substance as a harmful one.

A．translates
B．dubs
C．interprets
D．produces
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单项选择题
The great ______ that have influenced the world's thinkers came not from committees but from individuals who groped for the truth in independent research.
A．obeservations
B．generalization
C．manifestation
D．catastrophes
单项选择题
They greeted his proposal with ______ and refused to give it serious study.
A．incredulity
B．fickleness
C．derision
D．intensity
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