我国山羊主要分布在哪个区域?
参考答案:
我国山羊主要分布农区(62%),其次在牧区(23%),半农半牧区的山羊最少(15%)。
With a lot of problems _____, the newly-elected headmaster is having a hard time. [ ]
A. settled
B. settling
C. to settle
D. being settled
患者,女,30岁,10年来,反酸、嗳气、上腹部饱胀,伴有规律性上腹痛,进食后加重。胃镜检查,胃窦小弯侧可见溃疡。不支持消化性溃疡诊断的胃镜所见是()
A.溃疡直径小于2cm
B.溃疡边缘整齐
C.溃疡底部平坦
D.溃疡周围黏膜皱襞中断、结节状肥厚
E.溃疡呈椭圆形