单项选择题

What is a scientific approach used to prove

A．The true value of the product.
B．The buyers' reasoning mind.
C．The true appearance of the product.
D．The high quality of the product.
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单项选择题
Finer and finer division in the field of science has led to______.
A．greater interdependence of all the various sciences
B．the elimination of the need for specialists
C．greater independence of all the Various sciences
D．the greater need for the applied scientists
单项选择题
The phrase potential buyer ( Line 1, Para. 3 ) most probably means______.
A．those who may entertain themselves
B．those who seem to be alive
C．these who may associate the product with fun
D．those who may probably buy the product
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