城区交通量调查方案与郊区交通量调查方案不同，其原因是什么？（）
A、交通模式
B、地区模式
C、郊区模式
参考答案：A
DQL1250/1500.30斗轮式堆取料机主要由哪几大部分组成？
The boy doesn't speak _____ his sister, but his written work is very good. [ ]
A. as well as
B. so good as
C. more better than
D. more worse than
