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【单选题】
对TI-2抗原发生应答的主要细胞是A.
祖B细胞
B.
前B细胞
C.
不成熟B细胞
D.
B1细胞
E.
T细胞
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举一反三
【单选题】- What day is today? -__________.
A.
It’s March 6
B.
It’s a fine day today
C.
It’s March
D.
It’s Monday
【单选题】We were caught in________ heavy rain but afterwards we enjoyed_________ bluer and cleaner sky.
A.
a, the
B.
不填; the
C.
a, a
D.
不填; the
【单选题】—What a fine day, isn’t it— .
A.
Is that so
B.
I like the weather
C.
Yes, isn’t it
D.
But it’s not
【单选题】Speaker A: What a fine day today! Speaker B:
A.
No problem.
B.
I don’t like it today.
C.
How about going for a trip?
【多选题】三极管通过改变______来控制______；而场效应管是通过改变B来控制______ ，是一种______控制器件。
A.
基极电流
B.
栅—源电压
C.
集电极电流
D.
漏极电流
E.
电压
F.
电流
【单选题】在 linux 中与用户有关的文件为 ( )
A.
./etc/passwd 和/etc/shadow
B.
/etc/passwd和/etc/grpoup
C.
./etc/passwd和/etc/gshadow D ./etc/shadow和/etc/group
【单选题】— What a fine day! How about going for a ride? —_________. But we need to be home before six o’clock for the baseball match.
A.
I have no idea
B.
Excuse me
C.
You’re right
D.
Sounds great
【单选题】---Excuse me , sir , what a fine day it is ! --- ________ . You will want to have a spring outing , I suppose ?
A.
What for ?
B.
So what?
C.
How come ?
D.
How nice !
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