单项选择题

We can learn from the passage that______.

A．both pure scientists and applied scientists are not equally important
B．the aircraft designer stands for the pure scientist
C．geophysics and biochemistry are examples of' new specialties
D．pure scientists are more important

<上一题目录下一题>

热门试题

单项选择题

The applied scientist______.

A．does original research to understand the basic law
B．applies the results of research to practical problems
C．is not interested in practical problems
D．provides the basic knowledge for the pure scientist