参与TD-Ag刺激机体产生抗体的细胞是()
A.B细胞
B.T细胞和B细胞
C.巨噬细胞、B细胞、T细胞
D.巨噬细胞和B细胞
E.巨噬细胞和T细胞
参考答案:C
4个人吃12个鸡蛋,平均每人吃几个?
—Mo Yan won the 2012 Nobel Prize for literature!
—It’s such _______ news that all of us feel very ________.
A. excited; exciting
B. exciting; excited
C. excited; excited