(),36,81,169
A.16
B.27
C.8
D.26
参考答案:A
解析:分别是4,6,9,13的平方,即后项减前项分别是2,3,4的一组等差数列,选A
Of the two speeches, I think the ______ was better.
A.latter
B.later
C.late
D.latest
当k等于( )时,函数
在定义域内是连续函数。
A.1
B.0
C.-1
D.2