单项选择题

His project for a smokeless seemed perfect at the first glance but it couldn't bear the further ______.

A．temperament
B．scrutiny
C．contamination
D．symmetry
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单项选择题
We will have a dozen ______ with him 24 hours a day during the Prime Minister's visit here.
A．attendants
B．directors
C．foremen
D．laymen
单项选择题
The new constitution will outlaw ______ in employment, housing, and education.
A．isolation
B．discrimination
C．deviation
D．distinction
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