单项选择题

Finer and finer subdivision in the field of science has resulted in ______.

A．greater independence of each science
B．greater interdependence of all the various sciences
C．the eradication of the need for specialists
D．the need for only on classification of scientists
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单项选择题
The horizons of science have expanded means that ______.
A．the horizon changes its size from year to year
B．science has developed more fields of endeavor
C．scientists have made great progress in studying the horizon
D．scientists can see further out into space
单项选择题
The example given in the passage illustrates how ______.
A．pure science operates independently of applied science
B．the applied scientist discovers the basic laws of nature
C．applied science defines all the areas in which basic research is done
D．applied science suggests problems for the basic scientist
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