单项选择题

Speciation, ______, results when an animal population becomes isolated by some factor, usually geographic.

A．form biological species
B．biological species are formed
C．which forming biological species
D．the formation of biological species
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单项选择题
True patriotism ______ putting the interests of one country above everything, ______ one's life.
A．consists of... containing
B．consists of... including
C．consists in... including
D．consists in... containing
单项选择题
He was driving very fast because he was ______ of the fact that there was a speed limit.
A．innocent
B．aware
C．ignorant
D．sure
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