资料：ThesoybeanpricesendedhigherthisMondayastradersexpectsuppliestoremaintight. TheactivelyJulycontractforsoybeansrose20centstosettleat$14.85abushel. TheU.S.government'sweeklypredictionforsoybeanexportswashigherthantradersexpected,saidMikeZulo.PresidentofaconsultingcompanyinAtchison,Kansas. SuppliesforbeanshavebeenextraordinarilytightasChina'sdemandforsoymealcontinuestoincreaseevenasU.S.productionstaysrelativelysteady,hesaid.Soybeanpriceshaverisenabout15percentthisyear. “ThatU.S. D. A.numbercausedthetradetorefocusonjusthowrazor-thinsuppliesareheadingintonextfall'sharvest.”Zulosaid. Whydidthepricesofsoybeanriseaccordingtothepassage?
A.Because the general production of soybean stayed steady. B.Because the supplies were expected to keep tight. C.Because China’s demand for soybean increased. D.Because the trade of soybean was quite active.正确答案B
