患者，女性，52岁，进油腻食物后突感右上腹绞痛1.5小时伴右肩部牵涉痛。

患者经住院观察2天后，腹痛进行加重，伴有发热，应行的治疗措施（）.

A.胆囊切除术

B.胃肠减压

C.以上均不对

D.胆囊穿刺

E.继续保守治疗

— _______ there any American teachers in your school?

— _______ only one. [ ]

A. Are ; Yes, there are

B. Are; No, there is.

C. Is; No, there isn't

D. Are; Yes, there is