为便于追查输血不良反应的原因，血液发出后受血者和供血者的血样保存于2～6℃冰箱的时间至少
B
暂无解析
Heaskedmewhethermybrother________(fly)toBeijing.
Matteristhename________(give)toeverythingwhichhasweightandoccupiesspace.
Ifound________toanswerallthequestionswithinthetimegiven.
我国农业社会主义改造基本完成的标志是______。
Shehadclearlyno________ofdoinganywork,althoughshewasverywellpaid.