关于冠词的英语单项选择,
1.Whilehewasinvestigatingwaystoimprovethetelescope.Newtonmade_____discoverywhichcompletelychanged____man’sunderstandingofcolour.
A.a;/B.a;theC./;theD.the;a
2.Themostimportantthingaboutcottoninhistoryis_____partthatitplayedin_____IndustrialRevolution.
A./;/B.the;/C.the;theD.a;the
3.Whenhelift_____college,hegotajobas______reporterinanewspaperoffice.
A./;aB./;theC.a;theD.the;the