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【多选题】
胸腺非依赖性抗原(TI-Ag)的特点有A.
需要Th细胞辅助
B.
不需要Th细胞辅助
C.
诱导机体产生体液免疫和细胞免疫
D.
只诱导机体产生体液免疫
E.
不产生免疫记忆
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举一反三
【单选题】We also want to use the water to irrigate barren desert land.
A.
hairless
B.
bare
C.
empty
D.
bald
【单选题】We also want to use the water to irrigate barren desert land.
A.
hairless
B.
bare
C.
empty
D.
smooth
【简答题】A．bearing B．writing C．reading D．conveying
【简答题】Every day we use money to buy what we want. But have you ever really noticed the bill (钞票) in your hand? There are different pictures on both sides of banknotes (纸币) and interesting stories behind the...
【判断题】A locutionary act is the act of conveying literal meaning by means of syntax, lexicon, and phonology.()
A.
正确
B.
错误
【单选题】—We’d better_______ if we want to be on time． —OK．
A.
sweep up
B.
use up
C.
speed up
D.
set up
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