8.关于x,y的二元一次方程组$\left\{\begin{array}{l}{x+y=4k}\\{x-y=8k}\end{array}\right.$的解也是二元一次方程2x+3y=6的解,则k的值是( )
0 282476 282484 282490 282494 282500 282502 282506 282512 282514 282520 282526 282530 282532 282536 282542 282544 282550 282554 282556 282560 282562 282566 282568 282570 282571 282572 282574 282575 282576 282578 282580 282584 282586 282590 282592 282596 282602 282604 282610 282614 282616 282620 282626 282632 282634 282640 282644 282646 282652 282656 282662 282670 366461
| A. | 2 | B. | 1 | C. | -1 | D. | -2 |