—The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?

—________ my students have a try?

A．May

B．Must

C．Will

D．Shall

工业根据其产品的不同性质和用途而分为不同类别，下列工业产品中属于高新技术产品的是 [ ]

A、钢铁

B、汽车

C、机床

D、计算机