8.(-1)2003+(-1)2004=( )
0 293411 293419 293425 293429 293435 293437 293441 293447 293449 293455 293461 293465 293467 293471 293477 293479 293485 293489 293491 293495 293497 293501 293503 293505 293506 293507 293509 293510 293511 293513 293515 293519 293521 293525 293527 293531 293537 293539 293545 293549 293551 293555 293561 293567 293569 293575 293579 293581 293587 293591 293597 293605 366461
| A. | 0 | B. | -1 | C. | 1或者-1 | D. | 1 |