在体内药物分析中最常用的样本是
A.脏器B.血液C.组织D.尿液E.唾液
参考答案:B
—How much did the old man _____ you for repairing your bike?
—Five yuan. The price is very low.[ ]
A. charge
B. spend
C. cost
D. pay
闭锁两侧均呈盲端,其间有一条纤维带连接,其毗邻的肠系膜有一"Ⅴ"型缺损,为()
A.肠狭窄
B.肠闭锁Ⅰ型
C.肠闭锁Ⅱ型
D.肠闭锁Ⅲ型
E.肠闭锁Ⅳ型