单项选择题
Compared with large aircraft, small airplanes are not as streamlined and
hence
are less efficient.
A．at a glance
B．to a measurable degree
C．in most cases
D．as a result
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单项选择题
Shoppers’ characteristics were one of the determinants of Melvin T. Copeland’s classification of consumer goods.
A． Right
B． Wrong
C． Not mentioned
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单项选择题
Some goods are classified as convenience goods because they can be bought with little efforts.
A． Right
B． Wrong
C． Not mentioned
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