单项选择题

The businessman’s __________ purpose was to sell the product.

A．principle
B．primary
C．primitive
D．predominant
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单项选择题
I arrived at the park, __________ discover that it was closed for the winter.
A．just to
B．as a result
C．only to
D．and
单项选择题
Improved health can lead to a __________ population.
A．largest
B．larger
C．biggest
D．bigger
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