上消化道出血可用下列哪一药物口服止血（）
A.去甲肾上腺素
B.肾上腺素
C.异丙肾上腺素
D.多巴胺
E.麻黄碱
参考答案：A
在“构建和谐校园”的活动中，李雷被评为“文明之星”。你是他的好朋友，请用简短的英语对他进行介绍，并写一句你最想对他说的话。
Li Lei is my good 76 He is quite friendly and helpful. He is always trying to help
77 He does well in all his 78 And he has many different 79 of hobbies.
He is always well-behaved. He sets us all a good example. He is the hero in our heart.
写一句你最想对他说的话： 80
TOD（总需氧量）
