目前,关于人类胚胎干细胞研究和应用中道德争议的焦点问题是() A.人类胚胎干细胞的功

题型:单项选择题 A1/A2型题

问题:

目前,关于人类胚胎干细胞研究和应用中道德争议的焦点问题是()

A.人类胚胎干细胞的功能到底如何

B.人类胚胎是否是生命、是否应该得到尊重

C.人类胚胎发育阶段如何划分

D.人类胚胎干细胞是否可以商品化

E.人类胚胎是否可以克隆

考点:临床医学检验技术(主管技师)医学伦理学医学伦理学题库
题型:单项选择题 A1/A2型题

(2014届南京市秦淮区第一学期期末试题)(10分)铁矿石冶炼成铁是一个复杂的过程。炼铁的原理是利用一氧化碳与氧化铁的反应,该化学方程式为                                      

(1)某钢铁厂每天需消耗5000t含氧化铁76%的赤铁矿石,该厂理论上可以日产含铁98%的生铁的质量是多少?(请写出计算过程,结果精确到0.1t)

(2)某化学兴趣小组在实验室中模拟炼铁原理的实验,并对固体产物的成分进行探究。

[设计实验] 用一氧化碳还原纯净的氧化铁粉末,实验装置如右图,酒精灯b的作用是       

[进行实验]该小组按上述实验设计,在一定温度下进行了实验,测得下列数据:

①反应前玻璃管和内盛氧化铁粉末的总质量66.0g(玻璃管的质量为60.0g)。

②反应后玻璃管和内盛黑色固体的总质量m(冷却到室温称量)。

[分析与讨论]本实验中,玻璃管内固体粉末由红色全部变为黑色。小明同学认为该黑色固体全部是铁,但小华同学提出了质疑,于是大家提出查阅资料。

[查阅资料]

①一氧化碳还原氧化铁的固体产物的成分与反应温度、反应时间等因素有关。

②一氧化碳还原氧化铁的实验过程中固体产物可能有四氧化三铁、氧化亚铁、铁。

物质        

性质

四氧化三铁氧化亚铁氧化铁铁粉
颜色黑色黑色红色黑色
能否被磁铁吸引不能不能
[进一步实验和得出结论]

①该小组同学将反应后的黑色固体研磨后,再用磁铁吸引,发现黑色固体粉末全部能被吸引,则该黑色固体粉末中不可能含有氧化铁和       

②该小组同学将黑色固体粉末投入硫酸铜溶液中,一段时间后无紫红色固体析出,则该黑色固体粉末为       。其实,进行如上图所示实验后,若测得反应后玻璃管和内盛黑色固体的总质量m为       g,也能得出这个结论。

[反思与评价]一氧化碳还原氧化铁的实验中,若要得到铁可适当提高反应温度和延长反应时间。上图所示实验装置中,应作的一处修改是                            

题型:单项选择题 A1/A2型题

除哪项外,以下可见掌跖部角化过度:

A.手足慢性湿疮

B.毛发红糠疹

C.神经性皮炎

D.鹅掌风

E.红皮病

题型:单项选择题 A1/A2型题
Forty-three years seems like a long time to remember the name of a person.I have forgotten the name of an old lady who was a(n)  36  on my paper route when I was a twelve-year-old boy.Yet it seems like just yesterday that she taught me a lesson in   37 One afternoon, a friend and I were  38  rocks onto the roof of the old lady’s house  39  her backyard.The object of our play was to observe how the rocks changed to missiles as they   40  to the roof’s edge and shot out into the   41 
I found myself a perfectly smooth rock and sent it for a ride.The stone was too smooth, however, so it   42  from my hand as I let it go and headed   43  for a small window on the old lady’s back wall.
I was too scared about getting   44  that first night to be concerned about the old lady with the broken window.However, a few days later,   45  I was sure that I hadn’t been discovered, I started to feel   46  for her misfortune.
I made up my mind that I would   47  my paper delivery money, and in three weeks I had the seven dollars that I   48  would cover the cost of her window.I put the money in an envelope with a(n)  49  explaining that I was sorry for breaking her window and hoped that the seven dollars would cover the   50  for repairing it.
I waited until it was dark, then put the envelope through the letter slot in her door.
The next day, I   51  the old lady her paper and was able to   52  the warm smile that I was   53  her.She thanked me for the paper and said, “Here, I have something for you.” It was a bag of cookies.I thanked her and ate the cookies as I   54  my route.
After several cookies, I   55  an envelope.When I opened the envelope, I was shocked.Inside was the seven dollars and a short note that said, “I’m proud of you.”
小题1:
A.assistant B.customerC.adviserD.neighbour
小题2:
A.selfishness B.clevernessC.carefulness D.forgiveness
小题3:
A.picking B.kickingC.throwingD.striking
小题4:
A.fromB.underC.byD.around
小题5:
A.flowedB.rolledC.droppedD.fell
小题6:
A.yardB.kitchenC.room D.sky
小题7:
A.stepped B.stoppedC.skippedD.slipped
小题8:
A.rightB.slowC.straightD.fast
小题9:
A.caughtB.trappedC.lostD.hurt
小题10:
A.butB.whenC.beforeD.though
小题11:
A.guiltyB.nervousC.anxiousD.safe
小题12:
A.borrowB.saveC.transfer D.move
小题13:
A.usedB.earnedC.chose D.calculated
小题14:
A.bookB.noticeC.note D.article
小题15:
A.periodB.distanceC.size D.cost
小题16:
A.handedB.showedC.left D.sold
小题17:
A.witnessB.bringC.return D.wear
小题18:
A.comparing toB.receiving fromC.learning aboutD.playing with
小题19:
A.continuedB.forgotC.followed D.chose
小题20:
A.toreB.feltC.bought D.marked
题型:单项选择题 A1/A2型题

起落架选择活门位于什么位置?

A、机身上部整流罩内

B、机腹底部的整流罩内

C、左液压舱内

D、右液压舱内

题型:单项选择题 A1/A2型题

()是人类意识活动中一种最积极的、富有成果性的意识形态,是人们从事创造活动的出发点和内驱力,是创新思维和创造能力的前提。

A.创新意识

B.创新思维

C.创新能力

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