试题与答案

免疫是机体的一种特殊的保护性生理功能,对维持人体健康极为重要。 (1)免疫功能失

题型:填空题

题目:

免疫是机体的一种特殊的保护性生理功能,对维持人体健康极为重要。

(1)免疫功能失调可引起过敏性疾病。荨麻疹的起因是在过敏原的刺激下,浆细胞分泌的抗体分布在____;当同一种过敏原再次侵入机体时,有关细胞释放出的组织胺引起毛细血管______等变化,进而出现红肿现象。

(2)器官移植时,异体器官常不可避免地会被患者的______细胞识别并攻击。为了避免器官移植时的异体排斥反应,医院建议保留婴儿的脐带血,以便必要时_______。

(3)接种过流感疫苗的健康人也可能在短期内不止一次地患流感,其免疫学原因可能是____________。

答案:

(1)皮肤某些细胞的表面   扩张、管壁通透性增强

(2)效应T   利用自身的干细胞构建组织、器官

(3)流感病毒易发生变异,使原来的疫苗失去效用

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阅读理解。

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    "Yes, I know all about that," answered the patient sadly."You see, I'm that man's tailor."

根据短文内容判断正(T)误(F)。

( ) 1. The man's pains in the stomach was caused by too much worry.

(     ) 2. The doctor's earlier patient had made some clothes for the new one.

( ) 3. The earlier patient wasn't worried any more, because he had paid for the tailor.

(     ) 4. The tailor was worried that the man whom he made clothes for would not give the money to him.

( ) 5. The doctor wasn't a doctor, but a thief.

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