单项选择题

Investment in new product development is an essential ______ of corporate success.

A．element
B．component
C．ingredient
D．constituent
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单项选择题
An expensive project like this is ______ with the government's aim of reducing public spending.
A．intrinsic
B．ingenious
C．incompatible
D．inherent
单项选择题
Americans have become ______ sophisticated and discriminating about how they live, eat and play within an ever changing world.
A．completely
B．sincerely
C．absolutely
D．increasingly
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