单项选择题
()
A.-3 B.0 C.3 D.5
1, -4, 9, -16, ( )。A.18B.20C.-20D.25
单项选择题1, -4, 9, -16, ( )。
()A.7B.8C.10D.13
A.7 B.8 C.10 D.13
()A.3B.4C.5D.6
A.3 B.4 C.5 D.6