单项选择题

Colour-blind people often find it difficult to ______ between blue and green.

A．separate
B．compare
C．distinguish
D．contrast
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单项选择题
We have many holidays from the end of March till the beginning of April. They are the best days for ______.
A．blade
B．coincidence
C．balcony
D．entertainment
单项选择题
People are waiting for ______ of whether the man is innocent or not.
A．prediction
B．perturbation
C．expedition
D．confirmation
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