女性,44岁,反复发作上腹部疼痛3年。近3天上腹绞痛,伴发热寒战,皮肤巩膜黄染。
该病最可能的原因是()
A.肿瘤
B.结石
C.蛔虫
D.炎性狭窄
E.先天畸形
参考答案:B
句型转换,每空一词.
1. He works in a bank. (就画线部分提问)
_____ _____ he _____ ?
2. They are workers. (就画线部分提问)
_____ _____ they?
3. I want to be a teacher. (就画线部分提问)
_____ _____ you want to be?
4. Tom wants to be a policeman. (改为否定句)
Tom _____ _____ to be a policeman.
5. He wants to be a football player. (改为一般疑问句)
_____ he _____ to be a football player?
下列选项中属于口腔初级预防的是
A.义齿修复
B.充填治疗
C.窝沟封闭
D.牙周深刮
E.正畸矫治