与鼻咽癌相关的是()
A.EB病毒
B.人 * * 瘤病毒
C.乙肝病毒
D.幽门螺旋杆菌
E.丙肝病毒
参考答案:A
6~14岁小儿诊断贫血的标准是血红蛋白低于()
A.120g/L
B.110g/L
C.100g/L
D.90~60g/L
E.60~30g/L
-Why do you like dogs?
-__________ they are very friendly.[ ]
A. Because
B. But
C. And
D. Or