能够导致母猪流产、死胎,家兔人工接种常导致奇痒并死亡的病原是()
A.伪狂犬病病毒
B.日本乙脑病毒
C.猪繁殖与呼吸道综合征病毒
D.猪瘟病毒
E.细小病毒
参考答案:A
It's hard to imagine a world _____ printing _____ we have so many printed things now.[ ]
A. without; because
B. with; so that
C. without; as a result
D. with; so
利下无度,或大便失禁,神疲畏寒,腹痛,喜热喜按,应诊为
A.肾阳虚证
B.脾胃阳虚证
C.大肠虚寒证
D.寒湿困脾证