单项选择题

According to the author, the great outburst of major inventions in early America was in a large part due to______.

A．elementally schools
B．enthusiastic workers
C．the attractive premium system
D．a special way of thinking
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单项选择题
A technologist can be compared to an artist because______.
A．they are both winners of awards
B．they are both experts in spatial thinking
C．they both abandon verbal description
D．they both use various instruments
单项选择题
It is implied that adaptiveness and inventiveness of the early American mechanics______.
A．benefited a lot from their mathematical knowledge
B．shed light on disciplined school management
C．was brought about by privileged home training
D．owed a lot to the technological development
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