不属于嗜肝DNA病毒科中的成员是()
A.鸭乙型肝炎病毒
B.土拨鼠肝炎病毒
C.黑线姬鼠肝炎病毒
D.地松鼠肝炎病毒
E.乙型肝炎病毒
参考答案:C
Lately some scientists are experimenting _____ white mice to _____ this kind of medicine. [ ]
A. on, try on
B. with, test on
C. on, test out
D. with, carry out
遵循IP协议的网络叫做“IP网”,但“IP网”必须与互联网连接。