介导Ⅳ型超敏反应的免疫细胞是() A.T细胞 B.B细胞 C.嗜酸性粒细胞 D.肥大

题型:单项选择题 A1型题

问题:

介导Ⅳ型超敏反应的免疫细胞是()

A.T细胞

B.B细胞

C.嗜酸性粒细胞

D.肥大细胞

E.中性粒细胞

考点:临床执业医师超敏反应超敏反应题库
题型:单项选择题 A1型题

阅读理解。

     Jamie stood looking at the map. He turned it around. He looked up from the map. He looked back at

the map.He took a few steps back along the path. He put his finger on the map,and looked up again. "It's no

use!", he shouted. He threw the map away,and sat down on the ground.

     I asked him what the matter was.

     Jamie said. "We're lost. We must have taken a wrong turning."

     He didn't know where we were."I'm sorry,I'm sorry."he said again and again.

     I told him not to worry. "We'll follow the fiver." I said. "The fiver flows into the sea, so it will take us

back to the coast." This seemed like a good plan. We set off down the hill. The river was a long way below

us. It was getting dark, and it was starting to rain. Jamie started to run."Come on!" he called."In an hour, it

will be dark and we won't be able to see where we're going" "Stop!" I shouted, because I saw there was a

fallen tree on the path."Don't run. It's dangerous!"

     As soon as I saw him fall, I knew he was badly hurt. When I reached him, he said that his leg hurt. He

wasn't able to stand up. Now, We were lost, we had a long way from home,and Jamie couldn't walk.

1. Why did Jamie say "It's no use!"?

A. He could find the fight way without the map.

B. The path was wrongly marked on the map.

C. The map was not big enough to see clearly.

D. He didn't think the map helpful to them.

2. The writer and Jamie were lost because _______.

A. they took a wrong turning

B. they threw their map away

C. it was too dark to see the way

D. it was a long way from home

3. In order to return to the coast. they decided to ________.

A. follow the path

B. swim across the river

C. walk along the river

D. climb the hill

4. What happened to Jamie?

A. He couldn't see anything.

B. He fell and hurt his leg.

C. He fell into the river.

D. He was hit by a stone.

5. This passage mainly tells us ________.

A. the writer and Jamie lost their way

B. the writer and Jamie climbed the hill

C. how to read a travel map

D. how to make a travel plan

题型:单项选择题 A1型题

某甲30岁,购买3年期生存保险,保险金额为10万元。已知预定利率为3%,且l30=100,d30=2,l31=98,d31=3,l32=95,d32=5,l33=90,d33=10,则该保单的趸缴纯保费是()万元。

A.8.125

B.8.235

C.8.345

D.8.435

题型:单项选择题 A1型题

I watched everyone hurrying to and fro, most with eyes ____ the ground.

A.fixed on

B.fixing on

C.to fix on

D.fix on

题型:单项选择题 A1型题

在建设用地利用过程中,若土地权属及主要用途变更,应向()申报变更登记,经过批准,方具有法律效力。

A.乡级人民政府土地管理部门

B.县级以上人民政府土地管理部门

C.县级人民政府

D.市、县级人民政府

题型:单项选择题 A1型题

某医生接待了因手被割伤前来就医的甲、乙两位病人,在详细询问后,决定给接种过破伤风疫苗的甲注射破伤风类毒素;给未接种过破伤风疫苗的乙注射破伤风抗毒素。请回答下列问题:

破伤风杆菌的主要致病因素是它产生的破伤风毒素,当破伤风杆菌初次入侵时,进入机体内的毒素丧失毒性主要是特异性免疫反应中的()免疫发挥作用,参与该过程的免疫细胞包括吞噬细胞、T细胞、()和()等,此过程中T细胞的作用是()。

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