皮皮学，免费搜题
登录
搜题
【单选题】
新生儿出生后保留其脐带血，是因为脐带血内含有大量的造血干细胞，它不仅能够增殖分化成红细胞，还可以增殖分化成淋巴细胞，参与人体免疫调节。下列描述中错误的一项是（）A.
由造血干细胞形成淋巴细胞的过程中，细胞内mRNA发生了改变
B.
浆细胞在特异性识别抗原后，自身能合成并分泌抗体消灭抗原
C.
吞噬细胞能识别抗原，在非特异性免疫和特异性免疫中都有着重要的作用
D.
效应T细胞与靶细胞结合并使其裂解死亡的过程属于细胞凋亡
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】— In my opinion, China has more ______ to deal with the disease of A/H1N1. — I quite agree with you. Chinese medicine works well. [ ]
A.
advantages
B.
interests
C.
equipments
D.
materials
【单选题】It is futile to argue with him once he has made up his mind.
A.
unpleasant
B.
encouraging
C.
helpful
D.
useless
【单选题】Is it, in your opinion, possible _____ new measures will be taken to improve the terrible traffic? [ ]
A.
whether
B.
what
C.
when
D.
that
【单选题】—John, why just stand there with your mouth closed? You are expected to air your opinion. —________.You have another supporter in me.
A.
I'm with you on that
B.
I'm through
C.
Nonsense
D.
Hold your tongue
相关题目：