Americans defend the right to obtain a gun, and they have ________ been willing to turn a blind eye to the harm that people owning guns have caused. A: consecutively B: frequently C: hardly D: consequently

The pages of a report are numbered consecutively from 1 to 10. If the sum of the page numbers up to and including page number z of the report is equal to one more than the sum of the page numbers following page number x, then x=（）. A: 4 B: 5 C: 6 D: 7 E: 8