U.S. Cash Grains-Bids hold steady; sales slow

Dec 18 (Reuters) - Corn and soybean cash basis bids held steady around the U.S. Midwest on Wednesday after lower futures at the Chicago Board of Trade stalled farmer sales of the crops, grain merchants said. * Some farmers sold soybeans early but sales of the oilseed largely halted after CBOT soybean futures prices fell,