形成我国水旱灾害的气候原因是()
A、各地降水量差别很大
B、降水量的季节分配不均,年际变化也大
C、每年秋末、冬季受寒潮影响
D、台风带来的特大暴雨
参考答案:B
读一读,猜一猜。
My name is Bob. My father and mother have (有) six children (孩子). Half (一半) are boys and half
are girls. How many brothers do I have? How many sisters do I have?
1. I have ____________ brothers.
2. I have ____________ sisters.
不支持纵隔肿瘤诊断的是()
A.透视下转动病人,肿块基底部及边缘与纵隔不能分离
B.深呼吸时肿块随呼吸上、下移动
C.纵隔肿块有宽的基底与纵隔相连
D.肿块的边缘与纵隔边缘之夹角为钝角
E.肿块最大上下径在纵隔内