已知,如图,在△ABC中,AB<AC,BC边上的垂直平分线DE交BC于点D,交AC于点E,AC=8,△ABE的周长为14,求AB的长.
6
李先生,41岁,反复咳脓痰伴间断少量咯血20年,大咯血3天来诊。体检:右下肺可闻及固定湿啰音,有杵状指。胸片示右下肺纹理增粗,可见卷发影。诊断首先考虑()
A.肺结核
B.支气管扩张症
C.慢性肺脓肿
D.慢性支气管炎
E.肺气肿
根据句意,用括号中所给动词的适当形式填空。
1. My father ________ (not have ) lunch. He is very hungry.
2. ________ (bring) your reading books here tomorrow and we will do some reading.
3. You can play football after your homework ________ (finish).
4. The students ________ (tell) to learn English well last month.
5. We helped many poor children by ________ (send) them school things in the past.