请选出以下语句的输出结果 ( ) printf("%d\n,strlen("\t\"065\xff\n"));
A.5
B.14
C.8
D.输出项不合法,无正常输出
参考答案:A
He looked as if he ______ the answer. [ ]
A. knew
B. had known
C. knows
D. has known
附子回阳救逆的有效成分是乌头碱。()