The typical length of time between the first day of one period and the first day of the next is __________ days in young women, and __________ days in adults (an average of 28 days).
举一反三
- When is the tomb-sweeping activity usually on Qingming Day( ) A: The first five days B: The first 15 days C: The first 20 days
- This conference will last for __________. A: one day B: two days C: three days D: four days
- How many days will the clients stay at the hotel A: One day B: Four days C: Five days
- There are _____ days in June and _____ day is Children’s Day. A: thirteen; first B: thirty; the second C: thirty; the first D: thirteen; the first
- The agenda should be distributed at least ________ before the meeting. A: one day B: two days C: three days D: five days