―Kate doesn’t look very well. What’s wrong with her?

―She has a headache because she ________ too long; She ought to stop work.

A．has been reading

B．had read

C．is reading

D．was reading

由于面包坯在烘烤后将有（）的质量损耗，故在称量时要把这一质量损耗计算在内。

A、1%-2%

B、5%-8%

C、10%-12%

D、20%-22%