以下哪一项不是腹膜后器官
A. 胰腺
B. 肾脏
C. 肾上腺
D. 腹主动脉与下腔静脉
E. 十二指肠后壁
下列检查中哪一项对缺铁性贫血最有诊断意义
A. 血红蛋白减少
B. 血清铁减少
C. 总铁结合力增高
D. 骨髓铁粒染色阴性
E. 小细胞低色素性贫血
The word "flies" in the second sentence of the second paragraph means______.
A. flights
B. carriages
C. journeys
D. butterflies
______was proclaimed Canada's national anthem on July 1, 1980.
A. "God Save the Queen"
B. "The Star-Spangled Banner"
C. "O Canada"
D. "March of the Volunteers"