( )的确定是国家根据产业现状、发展和变化趋势,为取得最大产业经济效益,并为使国民经济协调、快速发展而确定的。
A.主导产业
B.支柱产业
C.基础产业
D.先导产业
参考答案:B
—Don't shout in the library, please.
—________[ ]
A. It doesn't matter.
B. That's all right.
C. Sorry, I won't.
D. Excuse me.
流量有()和()流量.