只要预测准确，决策就会是正确的。（）
参考答案：错
— Would you like to play basketball with us?
— Yes, I'd love to. _____ I'm afraid I have no time. [ ]
A. So
B. But
C. Or
D. And
双排扣件式脚手架单立杆规范允许的搭设高度为（）
A.30米
B.40米
C.50米
D.45米
