经济学产量
参考答案：
通常将蔬菜生长过程中有经济价值的产量称之为经济学产量。
---- Could you play ________ basketball when you were a primary school student?
---- No, I couldn't, but I could play ________ violin.
A．the; an
B．/; the
C．a, an
D．the; /
教育先行就是教育要先于经济而发展。( )
