此次疾病流行的传播途径最有可能是
A.接触疫水
B.苍蝇
C.注射途径
D.水源或食物污染
E.密切接触
参考答案:D
永久性房颤需要用华法林抗凝,调整INR到1.5~3.5,孤立性房颤可以不予抗凝治疗或予以阿司匹林口服。
Liu Hua often helps her sister __________ lessons.[ ]
A. with his
B. for her
C. with her
D. of her