―Do you _____this to my sister?
―Yes,I do.
A. mean
B. agree
C. pass
D. mention
答案:D
已知数列{an}的前三项依次为-2,2,6,且前n项和Sn是n的不含常数项的二次函数,则a100=( )
A.394
B.392
C.390
D.396
大众传播法的概念与特点?