对于一级评价项目，对其所在地区气象资料的调查期间，至少应为最近（）年。
A、5
B、4
C、2
D、3
参考答案：D
---What hot weather! Would you mind opening the windows?
---________
A．No.I won’t do it.
B．Yes, please.
C．Yes,I’ll do it.
D．No.Not at all.
