According to the instructors in this unit, what is the proper length for making an impromptu speech?( ) A: 3 minutes B: 5 minutes C: 4 minutes D: 2 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

How much time is proper for yoga practicing each time?每次练习瑜伽多久为宜？ A: 10 minutes B: 1 hour C: 4 hours D: 30 minutes

“一刻” was about _________. A: 14.4 minutes B: 5 minutes C: 10 minutes

The doctor will be free ______. A: 10 minutes ago B: before 10 minutes C: in 10 minutes D: 10 minutes after

The teacher will be free_____ . A: 10 minutes later B: after 10 minutes C: in 10 minutes D: 10 minutes after

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

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

( )11. A. About five minutes’ walk. B. About ten minutes’ walk.C. About fifteen minutes’ walk. D. About twenty minutes’ walk. A: A. About five minutes’ walk. B: B. About ten minutes’ walk. C: C. About fifteen minutes’ walk. D: D. About twenty minutes’ walk.