造成中枢神经系统慢性感染,出现类似中枢变性病临床表现的传染源是()
A.朊蛋白
B.M-蛋白缺陷型麻疹病毒
C.风疹病毒
D. * * 状多瘤空泡病毒
E.巨细胞病毒
参考答案:A
62.1805精确到百位是62.181.______.
_____ can stop the young men from going to Guangzhou to watch the basketball match.[ ]
A. Something
B. Nothing.
C. Anything
D. Everything