当低血糖病人出现休克时,医生会通过静脉注射给病人补充浓度为0.1%的葡萄糖溶液,

题型:选择题

问题:

当低血糖病人出现休克时,医生会通过静脉注射给病人补充浓度为0.1%的葡萄糖溶液,其主要目的是[ ]

A.供给全面营养物质

B.供给能源物质

C.供给水分

D.维持细胞的渗透压

考点:糖类的种类和作用
题型:选择题

What does it feel like to break a bone (骨头)? It’s different for everyone, but the pain is often sharp (严重). If the break is small, however, the person may not feel much pain at all. If you think that you or someone else has broken a bone, the most important things to do are to stay calm, make the hurt person comfortable, and call the doctor. Do not move the injured body part since movement could make it worse.

To treat the break, the doctor will need to take an X-ray. This gives the doctor the information he or she needs to set (接上) the bone: to put it back to its normal place. If the bone is large or it is broken in more than one place, the doctor may need to use metal pins (钢钉) to set it. After the bone has been set, the next step is usually putting on a cast, the special, hard thing that will keep the bone in place for a month or two.

Your bones are excellent at healing themselves. Broken bones will produce many new cells (细胞) and tiny blood vessels (血脉). These cover both ends of the broken part, and close up the break until the bone is as whole and strong as before.

小题1: Which of the following is the best title for the passage?

A.How to Know if a Bone is Broken

B.How Broken Bones Heal Themselves

C.Common Causes (原因) of Broken Bones

D.What You Should Know about Broken Bones小题2: When someone breaks his bone, the following should be done except ______.

A.asking the doctor for help

B.comforting the hurt person

C.moving the injured part

D.staying calm小题3:Which is the correct order to treat the break?

a. take an x-ray  b. use metal pins to set it  c. put it back to its normal place  d. put on cast

A.a→b→c→d

B.a→c→b→d

C.a→d→c→b

D.d→a→b→c小题4:The underlined word “heal” in Paragraph 3 is closest in meaning to “______”.

A.break again

B.become worse

C.wound or hurt

D.become healthy again小题5: Where would you probably read this passage?

A.In a story book.

B.On a poster.

C.In a health care book.

D.In a chemistry book.

题型:选择题

在不断通入氢气的条件下,加热铜和氧化铜的混合物40g。一段时间后,停止加热,称得残余固体质量为33.6g。求参加反应的氧化铜的质量

题型:选择题

正常人T波与QRS波群方向相同的原因是()

A.复极顺序与除极顺序相同,都是从心内膜向心外膜方向推进

B.心内膜与心外膜同时除极和复极

C.复极从心外膜向心内膜方向推进,与除极方向相反

D.除极与复极从室间隔开始向左、右心室推进

E.细胞膜最早开始除极的部位最先开始复极

题型:选择题

女孩,3岁。为21-三体综合征的易位型。其下列染色体核型中哪项最常见

A.46xy,-13,+t(13q21

B.46xx,-14,+t(14q21

C.46xy,-21,+t(21q22

D.46xx,-21,+t(21q21

E.46xx,-22,+t(21q22

题型:选择题

尾流漩涡是怎么围绕每个翼尖旋转的?

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