A:for; o
B:to; at
C:to; o
D:for; at
— You haven't been to Macao, have you?
— __________. How I wish to go there.
甲、乙、丙、丁四支足球队在世界杯预选赛中进球数分别为9,9,x,7,若这组数据的众数和平均数恰好相等,求出其中的x值以及此组数据的标准差.
诚实和守信两者密切联系,守信是诚实的思想基础,诚实是守信的外在表现。( )