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【单选题】
关于免疫应答的描述正确的是( )。A.
B细胞的活化都需要依赖T细胞
B.
T细胞对抗原肽的识别有MHC限制性
C.
所有Ag进入机体可直接被T细胞识别
D.
巨噬细胞在初次免疫应答中是重要的抗原提呈细胞
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【简答题】Questions Why are the so-called golden years not so pleasant at times for older citizens?
【单选题】Mary hadn't studied for the rest, so she answer most of the questions .
A.
harmlessly
B.
incorrectly
C.
carelessly
D.
imperfectly
【单选题】Choose the best answer for the following questions according to the text Why materials are so important in the modern times? ___
A.
Materials influence our everyday lives and accelerate the development and advancement of societies
B.
They are deep-seated in our culture.
C.
There are many kinds of materials.
D.
They are very expensive.
【单选题】Go through Text A with the tape and choose the best answer for the following questions. 1. What impressed the author so much about Mark’s response to the author’s correcting?
A.
He paid no attention to what the author said.
B.
He kept talking despite the fact that the author corrected him for misbehaving.
C.
He responded to the author’s criticism in a sincere way.
D.
He lost patience after hearing about the teacher’s criticism.
【判断题】We’d better not prepare any discussion questions about the pre-reading video so as to save time for students to read the text.
A.
正确
B.
错误
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