While he was investigating ways to improve the telescope, Newton made _______ discovery which completely changed _______ man’s understanding of colour.

A．a；/

B．a；the　

C．/；the

D．the；a

在田GB/T19000—2000族质量标准中说明质量管理体系要求的标准为( )。

A．GB/T19000—2000

B．GB/T19001—2000

C．GB/T19004—2000

D．IS019011