诱导B细胞产生特异性IgE抗体的细胞因子是-我要搜题网

[不定项选择题]共用题干 Stomach Ulcer
Stomach ulcers are the cause of severe pain for many people.Doctors have been able to help lessen the pain of ulcers.They could not cure them.Now doctors have discovered a cause of ulcers.This means they may have found a way to cure people who suffer from the stomach pain.Studies show that ten percent of the population will develop an ulcer at some time in their life.So a possible cure is good news for many people.
Ulcers are wounds in the stomach that are similar to small cuts or tears.These wounds can harm the tissue in the stomach,the pipe that carries the food to the stomach or parts of the small intestines.Fluids in the stomach then increase the pain of an ulcer.How does a person know he or she has an ulcer?Doctors say most people with ulcers feel a burning pain in their chest or stomach.This pain often is called heart burn.It usually happens before eating or during the night.It causes some people to lose their desire to eat,or they are unable to keep food in their stomachs.Doctors believed that ulcers were caused by unusually strong stomach fluids,which damaged stomach tissue.Now they have discovered that most ulcers are caused by a bacterial organism called Hillico Bactor Pilorie or H.Pillorie. H.Pillorie bacteria are what make stomach produce extra stomach fluid.Doctors found that they can kill the bacteria with medicines called antibiotics.Health experts say the discovery of a cure for ulcers can save thousands of millions of dollars in medical costs.They also believe curing ui- cers will reduce the number of people who develop stomach cancer.The number of people with stomach cancer is very high in Japan,Southeast Asia and parts of Africa.
Doctors say a person is more likely to get an ulcer if his or her family has had one.In fact a person with the family history of ulcers is three times more likely to get one than other peo-ple.There are ways people can protect themselves from developing an ulcer.Doctors say it is more important to reduce the amount of strong fluids in the stomach.To do this,doctors say,people should not smoke cigarettes or drink alcohol.And they say people should reduce tension in their lives. There has been a change in doctors'understanding of the cause of stomach ulcer.
A.Right
B.Wrong
C.Not mentioned

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[单项选择]结核杆菌典型的形态为（）
A. 细长略弯曲，无鞭毛
B. 粗短且弯曲，无鞭毛
C. 细长略弯曲，有鞭毛
D. 细长、无弯曲、有鞭毛
E. 粗短无弯曲，有鞭毛

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[简答题]阅读下列案例,并回答问题下面是某语文教师对自己两次《蛇与庄稼》阅读课教学的反思。第一次我力图突出课文中语言文字的掌握。我在备课时把“教参”中所提到的字、词、句、段、篇的知识点融合在系列的问题中，然后在课堂上将这些问题一一进行详尽解说，学生们经过整整两个课时的学习，较好地掌握了课文中生字的读、写、用；能够背诵和默写指定的段落；理解蛇与庄稼、猫与苜蓿、吐痰与肺结核的关系。第二次我在强调语言文字训练的基础上，注重学生自主学习能力的培养。我根据课文三个段落在写作手法、内容上有相似之处的特点，确立了“精讲一段，举一反三”的教学策略。在第一段体现“引导学生自己提出问题，然后讨论，最后自己试着解决问题”的教学设计。简言之，就是让学生带着问题走进课堂，自己解决问题。在课堂上学生大胆地提出了许多问题：为什么放入蛇庄稼就会丰收；什么是海啸；田鼠怎样糟踏庄稼`……整个教学过程也因学生提出的不同问题而不断调整，我适时地加以点拔指导，通过展示关系图，多媒体课件演示，小组讨论等方式在课堂上一一解决了学生们的问题。接着，我在归纳第一段的学习方法后引导他们小组合作学习课文的第二、三段，最后总结学习收获。通过两次教学，我深深地体会到教师持有的教学理念不同，学生所获得的发展也是不一样的。问题：请你结合教学过程的基本规律对这位教师的两次教学加以评析。

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[判断题]客车发电机的辅修周期为9个月。( )
A.正确
B.错误

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[判断题]网络与安防设备配置协议及策略应遵循最小化原则。( )
A.正确
B.错误

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[单选题]固定式配电箱开关箱中心点与地面的相对高度应为( )。
A.0.5m
B.1.0m
C.1.5m
D.1.8m

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[单项选择]不同的运输网类型有着不同的研究重点，国家级交通运输网络主要研究的是( )。
A. 运输场站
B. 运输通道
C. 运输枢纽
D. 运输管理

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[不定项选择题]维生素C 用于
A.防治坏血病
B.防治佝偻病
C.防治夜盲症
D.习惯性流产的辅助治疗
E.防治唇干裂

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[判断题]对拒不参加年检的旅行社，年检主管机关可注销其业务经营许可证。