脾的动脉周围淋巴鞘内的主要细胞是（）。
A、B细胞
B、T细胞
C、巨噬细胞
D、交错突细胞
参考答案：B
John did quite well in his exams, _____ how little he studied. [ ]
A. consider
B. considering
C. considered
D. to consider
142857÷117+285714÷117+571428÷117．
