疟疾的病理因素是（）
A.风寒、风热
B.疟邪、瘴毒
C.暑湿、热毒
D.风痰、瘀血
E.疟蚊
参考答案：B
可以特异性提呈抗原的APC为（）
A.巨噬细胞
B.DC
C.上皮细胞
D.朗格汉斯细胞
E.B细胞
The editor’s job is to keep the newspaper ______ and ______ to the readers.
A．balanced; interested
B．balancing; interesting
C．balanced; interesting
D．balancing; interested
