When did the man order A: 30 minutes ago. B: 20 minutes ago. C: 10 minutes ago.

W:I thought you were going to be on the 5:30 train.M:I took the 5:30, but it was so late that it came in alongside the 6:00 train. How late was the train(). A: 20 minutes B: 30 minutes C: 40 minutes

How late was the train（） A: 20 minutes B: 30 minutes C: 40 minutes

​If you are a representative of the host, when should you arrive?‌​‌ A: Just on time. B: At least 10 minutes early. C: At least 20 minutes early. D: At least 30 minutes early.

What is the recommended amount of time spent on cleaning A: 5 minutes B: 10 minutes C: 15 minutes D: 20 minutes

How many minutes ofConcrete mixed in stationary mixers and transported by non-agitating equipment shall be pay? A: 30 minutes B: 20 minutes C: 40 minutes D: 15 minutes

Richard went jogging at 3:30. He jogged for 30 minutes, walked for 10 minutes then jogged again. He arrived home at 4:20. How long was his second jog? 未知类型：{'label': 'questionDesc', 'content': '请选出正确答案。', 'isMemberControl': 0, 'type': 181} A: 20 minutes B: 10 minutes

Richard went jogging at 3:30. He jogged for 30 minutes, walked for 10 minutes then jogged again. He arrived home at 4:20. How long was his second jog? 未知类型：{'label': 'questionDesc', 'content': '\xa0请选出正确答案。', 'isMemberControl': 0, 'type': 181} A: 20 minutes B: 10 minutes

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腰椎穿刺正常脑脊液细胞计数为（） A: 0～8）×10⁶/L（0～5/mm³） B: 10～20）×10⁶/L（10～20/mm³） C: 20～30）×10⁶/L（20～30/mm³） D: 30～40）×10⁶/L（30～40/mm³） E: 40～50）×10⁶/L（40～50/mm³）