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
The forecast indicated that the weather for the weekend would be________.
A．rainy and mild
B．rainy and cold
C．sunny and mild
D．cloudy and cold
单项选择题
Mr Johnson would like to work as a(n)________.
A．adviser
B．computer programmer
C．product designer
D．school teacher
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