They ____ my wallet when I got on the bus.[ ]
A. still
B. steel
C. steal
D. stole
答案:D
在等差数列{an}中,若a4+a6+a8+a10+a12=120,则2a9-a10的值为[ ]
A.28
B.24
C.22
D.20
环境影响评价的基本功能?