2013年5月托福考试:托福阅读真题之输血
【Introduction】 输送血液可以称为生命的礼物。然而,从每年5百万输血病人的大部分情况来看,实际上,输血弊大于利。 【Section One】Article Why Banked Blood Goes Bad It‘s a problem that doctors have been wrestling with for several years, as study after study shows a disturbing spike in heart di...