A new _______to teaching English is being used here, and it has proven to be very helpful to the students.

A．way

B．system

C．approach

D．method

东北地区要发展现代农业，强化粮食基地建设，推进农业规模化、标准化、机械化和产业化经营，提高( )。

A．产量与质量

B．商品率和附加值

C．产品生产率

D．出口率