设intx=-9,y;,则执行y=x>=0?x:—x;后y的值是______。
参考答案:I
Yesterday I_____ and I put my head back right away.
A. had a nosebleed B. got hit on the head C. cut my knee
胆道蛔虫病的典型临床表现是()
A.中上腹"钻顶样"剧烈绞痛
B.突然发病,突然缓解
C.可有蛔虫吐出史
D.可伴轻度黄疸
E.以上都是