Murphy征阳性的体征最多见于的疾病是()
A.急性胆囊炎
B.急性阑尾炎
C.胃溃疡
D.急性胃肠炎
E.食物中毒
参考答案:A
- Someone is knocking at the door.
- It ______ be Tom. He is still in the school.
A.can’t
B.mustn’t
C.couldnot
D.might; not
对抗的课堂气氛则是()、学生过度兴奋、各行其是、随便插嘴、故意捣乱。