诚信的基本要求是[ ]
A、诚恳真挚
B、诚心诚意
C、坦诚相见
D、对人守信，对事负责
答案：D
There's a rising problem with the popularity of private cars _____ road conditions need _____. [ ]
A. that; to be improved
B. which; to improve
C. where; improving
D. when; improving
托收凭证各联中需专夹保管的是第（）联。
A、一
B、二
C、三
D、四
