单项选择题


A．innovation
B．specialization
C．speculation
D．distinction
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A．FrenchB．EnglishC．GermanD．Italian
A．French
B．English
C．German
D．Italian
单项选择题
The author compares rain forests to coral reefs because ______.
A．they are approximately the same size
B．they share many similar features
C．most of their inhabitants require water
D．both have many different forms of life
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