四十七岁妇女，平时月经周期规律。近2个月有接触性出血。妇科检查：子宫颈见菜花样赘生物，触之易出血。本例的诊断可能性最大的是（）

A.子宫颈息肉

B.子宫黏膜下肌瘤

C.子宫颈癌

D.子宫内膜癌

E.子宫颈结核

The rescuer can best provide an airtight seal during mouth-to-mouth resuscitation by pinching the victim’s nostrils and（）.

A.Cupping a hand around the patient's mouth

B.Keeping the head elevated

C.Applying his mouth tightly over the victim's mouth

D.Holding the jaw down firmly