Our school is on the side of Chaoyang Road,      our school is a large housing block where many people from the city live here.

A．across

B．opposite

C．in the front of

D．face

下列哪些表现或指标有助于贫血严重程度的判断()

A．呼吸困难

B．心悸

C．头晕

D．脸色苍白

E．外周血血红蛋白浓度