【单选题】【消耗次数:1】
造成贫血的原因可能是?
缺锌
缺碘
缺铁
缺钙
参考答案:
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相关题目
【判断题】 酸性土壤中容易发生缺锌和缺铁
①  正确
②  错误
【单选题】 老年性贫血有的原因明确,是缺铁引起的。( )
① 
② 
【多选题】 缺碘的危害包括()。
①  A.缺碘性甲状腺肿
②  B.儿童痴呆
③  C.身材矮小
④  D.胎儿畸形
【多选题】 植物缺铁的病症().
①  A.植物褪绿变黄,进而出现白化
②  B.老叶绿色,新叶缺铁黄化白化
③  C.植株矮小
④  D.早衰
【单选题】 成人缺碘可引起
①  单纯性甲状腺肿
②  甲状腺机能亢进
③  甲状腺炎
④  甲状腺机能减退
⑤  以上都不是
【单选题】 下列人体缺锌的常见体征是?
①  脸色、口唇和眼结膜苍白
②  皮肤粗糙,伤口愈合迁延
③  心脏增大、急性或慢性心律失常
④  引起克汀病
⑤  引起异食癖
【单选题】 饮食中缺碘对机体的影响是:
①  造成甲亢
②  基础代谢率增加
③  形成单纯性甲状腺肿
④  甲状腺萎缩
⑤  无影响
【多选题】 人体缺锌的临床表现有
①  生长停滞
②  味觉功能减退
③  性幼稚
④  多发性神经炎
⑤  创伤不愈合
【单选题】 体内缺铁时的最早表现为
①  A.血清铁降低
②  B.血清总铁结合力增高
③  C.贮存铁减少
④  D.平均红细胞
【判断题】 中国人缺铁比较普遍。
①  正确
②  错误
随机题目
【单选题】 Which of the following is the advantage of whole class work?
①  It is an ideal way to show materials and do presentations together
②  It allows students to work together rather than under teacher’s guidance.
③  There is always a great chance of different opinions and contributions to the work
④  It is less stressful.
【单选题】 Which of the following is the time when students work in groups?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small group
④  When students are expected to work on their own at their own speed.
【单选题】 What role does a teacher play in the following activity? The teacher gives students 2 minutes to skim a text, and when time is up, he asks students to stop and answer some questions.
①  Controller
②  Assessor
③  Organizer
④  Prompter
【单选题】 What are the possible roles of a teacher?
①  Controller, assessor
②  Organizer, prompter
③  Participant, resource-provider
④  All of the above.
【单选题】 Which of the following is the time when students study by themselves?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small groups
④  When students are expected to work on their own at their own speed.
【单选题】 What role does a teacher play in the following activity? When a student has made a sentence with borrow, “I borrowed a paper to write a letter”, the teacher says, “Well, we don’t say a paper, we say a piece of paper.”
①  Controller
②  Assessor
③  Organizer
④  Prompter.
【单选题】 Why do novice teacher often have problems giving clear instructions?
①  Their language proficiency is low
②  They are fresh from the university
③  Their instructions are too short
④  They are not able to target their instructions to the level of the learners.
【单选题】 When is appropriate for the teacher to give classroom instructions to students?
①  Give directions to tasks or activities, checking comprehension, giving feedback
②  Providing explanations to a concept or language structure, drawing attention
③  Setting requirements, checking comprehension, assigning homework
④  All of the above.
【单选题】 What are not good rules to follow for making instructions effective?
①  Use simple instructions and make them suit the comprehension level of the students
②  Use the mother tongue only when it is necessary
③  Use body language to assist understanding
④  Not model the task or activity before letting students move into groups or pairs .
【单选题】 What role does a teacher play in the following activity? When the students have in groups decided where to go for a spring outing, the teacher asks each group to tell the others why they have made such a choice.
①  Controller
②  Assessor
③  Organizer
④  Prompter.