【多选题】以下哪个选项体现的是单时制文化的特点？

A.I’m writing to remind you that tomorrow will be the deadline for submitting your annual report.#B.I’m writing to inform you that the meeting which is to be held at two o’clock this afternoon has been cancelled. The HR Department will find some time next week for the meeting.#C.“May I use your phone for a long-distance call？”. “No. I am afraid not.”#D.“ May I use your phone for a long-distance call？”. “ I think there is a