单项选择题

______ plants, which manufacture their own food, animals obtain nourishment by acquiring and ingesting their food.

A．As
B．Different
C．Unlike
D．As many
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单项选择题
I had to pay ______ on a carpet I brought in through the Customs today.
A．taxes
B．rates
C．fines
D．duty
单项选择题
First designated in 1970, Earth Day has become an annual international event ______ concerns about environmental issues such as pollution.
A．dedicated to raising
B．dedicated raising
C．dedicated to raise
D．that dedicates to raising
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