单项选择题

________has contributed most to the redwoods survival.

A．Absence of natural enemies
B．Resistant bark and damp climate
C．Coastal isolation
D．Cool weather and daily fog
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单项选择题
What can be concluded about Janet
A．She has come to the party.
B．She is hosting the party.
C．She hasn’’t turned up.
D．She is planning a party.
单项选择题
Prance controlled Syria________
A．before the First World War
B．from 1516 until the end of the First World War
C．from 1516 to Syrian independence
D．from the end of the First World War to 1946
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