问题
单项选择题
支气管扩张发病的机制是()
A.支气管一肺组织感染及阻塞
B.肺结核
C.肿瘤压迫
D.支气管先天性发育缺损和遗传因素
E.支气管内结石
答案
参考答案:A
支气管扩张发病的机制是()
A.支气管一肺组织感染及阻塞
B.肺结核
C.肿瘤压迫
D.支气管先天性发育缺损和遗传因素
E.支气管内结石
参考答案:A
cooking food in the bush and sleeping in tents. But they’re the exciting 小题2:__________ that I enjoyed most. One of the activities was 小题3:__________ Flying Fox. 小题4:__________ you are taking part in the activity, you are attached to a wire that stretches from the top of a cliff to the ground. Then you jump off the cliff. There are very strong ropes and clips so you are very safe. Before I went on the Flying Fox, I was a bit 小题5:__________. My classmates kept on encouraging me. So I closed my eyes and jumped. I felt my whole body was flying! It was so exciting! |