题型:填空题 患者男性,55岁,近2年出现头昏、乏力、面色苍白,伴上腹隐痛;无发热,小便正常,大便潜血(+)。血红蛋白70g/L,红细胞3.0×10/L,白细胞6.5×10/L,血小板200×10/L,网织红细胞0.008;尿常规蛋白(+),管型(﹣),白细胞1~3个/HP;血尿素氮5.2mmol/L。关于该患者实验室检查结果,以下哪些叙述正确()A.血清铁蛋白230ug/LB.血清运铁蛋白受体升高C.血清铁降低,总铁结合力降低D.HP(+〕E.骨髓象为中、晚幼红细胞增生F.红细胞寿命缩短G.血液锌卟啉降低H.网织红细胞2.9%I.高铁血红蛋白还原试验阳性J.骨髓细胞外铁染色阴性 查看答案
题型:填空题 目前,我国农村中小学学生均可享受国家免费提供的面包、牛奶等营养餐。下图表示某营养物质在人体内的代谢过程,据图回答。(1)面包中以淀粉在口腔中被初步消化为麦芽糖,麦芽糖及未消化的淀粉在小肠中被彻底分解为〔a〕 。(2)经过图中②此过程后,血液变成了营养丰富的 血。(3)物质a进入血液后,至少需要 次流经心脏,才能到达下肢肌肉细胞。(4)肌肉细胞产生的代谢废物随血液流到肾脏,形成尿液必须经过 两个生理过程。 查看答案
题型:填空题 Many students find the experience of attending university lectures to be a confusing and frustrating experience. The lecturer speaks for one or two hours, perhaps (61) the talk with slides, writing up important information on the blackboard, (62) reading material and giving out (63) The new student sees the other students continuously writing on notebooks and (64) what to write. Very often the student leaves the lecture (65) notes which do not catch the main points and (66) become hard even for the students to understand. Most institutions provide courses which (67) new students to develop the skills they need to be (68) listeners and note-takers. (69) these are unavailable, there are many useful study-skills guides which (70) learners to practice these skills independently. In all cases it is important to (71) the problem before actually starting your studies. It is important to (72) that most students have difficulty in acquiring the language skills (73) in college study. One way of (74) these difficulties is to attend the language and study-skills classes which most institutions provide throughout the (75) year. Another basic strategy is to find a study partner with whom it is possible to identify difficulties, exchange ideas and provide support.A.withoutB.withC.onD.except 查看答案