一个人的血型在一生中不会改变，但因某些疾病可使血型抗原发生“暂时”变化
参考答案：对
---Where is Zhang Ming?
---Oh, don’t you know he to Beijing to see his parents and he’ll be back tomorrow.
A. has gone B. has been C. had gone
多潘立酮为
A．胃动力药B．抗酸药C．平喘药D．祛痰药E．镇咳药
