单项选择题

Humans should not develop their economy at the ______ of the ecological environment.

A．destruction
B．pollution
C．expense
D．mercy
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单项选择题
Such ______ as self-respect and industriousness merit the full backing of an employer.
A．advantages
B．traits
C．interests
D．shortcomings
单项选择题
Notwithstanding its great diversity of styles, forms, themes, and functions, the theatre of today has its roots in a basic need to give meaning to the workings of the universe.
A．In terms of
B．As regards
C．Despite
D．In view of
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