2.Modern science has found that _______ one is using chopsticks,over 30joints and over 50
muscles are used,which is a favorable stimulation to the brain.( )
0 138282 138290 138296 138300 138306 138308 138312 138318 138320 138326 138332 138336 138338 138342 138348 138350 138356 138360 138362 138366 138368 138372 138374 138376 138377 138378 138380 138381 138382 138384 138386 138390 138392 138396 138398 138402 138408 138410 138416 138420 138422 138426 138432 138438 138440 138446 138450 138452 138458 138462 138468 138476 151629
muscles are used,which is a favorable stimulation to the brain.( )
A. | since | B. | although | C. | unless | D. | while |