Gram染色呈阴性反应的细菌有（）。
A.金黄色葡萄球菌
B.溶血性链球菌
C.结核杆菌
D.麻风杆菌
E.梅毒螺旋体
参考答案：C, D
—Do you mind __________ alone at home?
— Not at all. She is old enough to take care of herself.
A．Jane leaving
B．Jane having left
C．Jane’s being left
D．Jane to be left
以My teacher 为题，写一篇100字左右的短文。
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