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【单选题】
关于自身抗体的叙述，下列哪项是正确的( )。A.
某些非自身免疫病人也可检出自身抗体
B.
正常机体不可能检出自身抗体
C.
自身抗体的检出率随年龄增加而明显降低
D.
检出自身抗体就意味着发生了自身免疫病
E.
自身抗体导致组织损伤的机制是Ⅰ型反应
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【简答题】2014-06-section A.mp3: 1 A) College tuition has become a heavy burden for the students. B) College students are in general politically active nowadays. C)He took part in many protests when he was at c...
【简答题】He has many (active) _____ that take up his time when he’s not working on his novels.
【单选题】听力原文： Many of us believe that a person's mind becomes less active as he grows older. But this is not true, according to Dr.Jarvik, professor of psychiatry at the University of California. She has stud...
A.
remember less
B.
reason better
C.
learn fewer things
D.
lose no intellectual ability
【单选题】听力原文： Many of us believe that a person's mind becomes less active as he grows older. But this is not true, according to Dr. Jarvik, professor of psychiatry at the University of California. She has stu...
A.
remember less
B.
reason better
C.
learn fewer things
D.
lose no intellectual ability
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