单项选择题

As a salesman, he works on a (an) （）basis, taking 10% of everything he sells.

A．salary
B．pension
C．commission
D．income

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单项选择题
The semantic components of the word gentleman can be written as （）.

A．+ANIMATE, +MALE, +HUMAN, - ADULT
B．+ANIMATE, +MALE, +HUMAN, +ADULT
C．+ANIMATE, - MALE, +HUMAN, - ADULT
D．+ANIMATE, - MALE, +HUMAN, +ADULT
单项选择题
The utterance We are already working 25 hours a day, eight days a week. obviously violates the maxim of （）.

A．quality
B．manner
C．relation
D．quantity
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