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【单选题】
对流免疫电泳中抗体向负极移动的原因是
A.
抗体带正电荷
B.
抗体带负电荷
C.
抗体不带电荷
D.
抗体的电泳作用大于电渗作用
E.
抗体的电渗作用大于电泳作用
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【单选题】听力原文：W: I'm thinking of getting a new pantsuit to wear to James' wedding. M: I just hope that my old suit still fits. You know how I feel about shopping. Q: What does the man imply? (14)
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