男,49岁,既往体健,因头晕半天,黑便3次,急诊。血压80/50mmHg,心率124 发布时间:2017-07-18 06:42 │ 来源:www.tikuol.com 题型:单项选择题 问题: 男,49岁,既往体健,因头晕半天,黑便3次,急诊。血压80/50mmHg,心率124/分,面色苍白,冷汗。首先考虑A.急性肠炎B.急性胃穿孔C.心绞痛D.心肌梗死
题型:单项选择题 阅读下列短文,从所给的四个选项中选出最佳答案. A young man once asked Albert Einstein, the great scientist, 1 the secret of success(成功) is. The scientist told him that the secret of success is 2 work. A few days later the young man asked him the same question again. Einstein was very 3 . He did not say 4 , but wrote 5 words on a piece of paper and handed it 6 the young man. The young man looked at the piece of paper. 7 it was written: A=X+Y+Z. “What does this mean?” asked the young man. “A means success,” explained the old scientist. “X stands for(代表) hard work, Y stands for good methods(方法), and Z…, Z means stopping 8 and getting down to work.”小题1:A.howB.whatC.whichD.why小题2:A.hardB.easyC.goodD.bad小题3:A.pleasedB.happyC.angryD.sorry小题4:A.anythingB.nothingC.somethingD.everything小题5:A.a littleB.littleC.a fewD.few小题6:A.forB.toC.ofD.with小题7:A.OverB.OnC.InD.At小题8:A.talkB.to talkC.talkedD.talking 查看答案
题型:单项选择题 血红蛋白是由()A.一对珠蛋白肽链和二个亚铁血红素组成B.一对珠蛋白肽链和四个亚亚铁血红素组成C.两对珠蛋白肽链和二个亚铁血红素组成D.两对珠蛋白肽链和三个亚铁血红素组成E.两对珠蛋白肽链和四个亚铁血红素组成 查看答案