引起口腔粘膜球菌性口炎的细菌是()
A.金黄色葡萄球菌
B.变形链球菌
C.放线菌
D.牙龈类杆菌
E.梭形杆菌
参考答案:A
—You mustn't lend the book to others.
—______.[ ]
A. A1l right ,I won't
B. Yes,I must
C. No , I needn't
D. Certainly , I must
一堆桃子,5个5个地分,剩余3个;7个7个地分,剩余2个,则这堆桃子的个数最小为( )。
A.23
B.19
C.41
D.31