We discussed about winter break last class.
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Today’s lesson is about
A. about winter sports
B. Kwanzaa and Christmas
C. successful people
A compound sentence has
A. One independent clause only.
B. one independent clauses separated by a colon or a semi colon or a comma and a conjunction.
C. One independent clause and no dependent clauses
BCR复合物的组成成分为
A. mIg, CD3
B. IgM, CD79a/CD79b
C. IgD, CD79a/CD79b
D. mIg, CD79a/CD79b
E. mIg, IgA和IgG
传递B细胞活化第一信号的信号转导分子为
A. CD79a和CD79b
B. CD19和CD21
CD3和CD4
D. CD4和CD8
E. CD40和CD40L
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