胃、十二指肠溃疡出血的主要症状、体征是()
A.上腹部疼痛加剧
B.上腹部可有明显压痛
C.移动性浊音阳性
D.肠鸣音减少或消失
E.以上都不是
参考答案:E
While in university, we were offered a number of afterschool activities to _____ our social skills.
A.create
B.grow
C.develop
D.settle
脑梗塞的病因不是()
A.脑动脉粥样硬化
B.各种脑动脉炎
C.有心脏形成的脑栓塞
D.糖尿病
E.以上均不是