单项选择题

A．Coastal isolation.
B．Resistant bark and damp climate.
C．Absence of natural enemies.
D．Cool weather and daily fog.
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单项选择题
A．Seven o’’clock.B．Seven thirty.C．Eight o’’clock.D．Eight thirty.
A．Seven o’’clock.
B．Seven thirty.
C．Eight o’’clock.
D．Eight thirty.
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