采集后的样品，NO20～４℃可保存（）天，20℃可保存（）小时，SO20―4℃可保存（）天。
采集后的样品，NO20～４℃可保存（）天，20℃可保存（）小时，SO20―4℃可保存（）天。
The train is late for 20 minutes. Why are there always so many _______?
The train is late for 20 minutes. Why are there always so many _______?
The meeting room is so small that it can hold 20 people ______.
The meeting room is so small that it can hold 20 people ______.
中国大学MOOC: 8. The meeting room is so small that it can hold 20 people ________.
中国大学MOOC: 8. The meeting room is so small that it can hold 20 people ________.
采集后的样品，NO20～４℃可保存（）天，20℃可保存（）小时，SO
采集后的样品，NO20～４℃可保存（）天，20℃可保存（）小时，SO
Great changes have taken place in that school. It is no longer ____it was 20 years ago.______it was so poorly equipped.
Great changes have taken place in that school. It is no longer ____it was 20 years ago.______it was so poorly equipped.
Company A has a share price of $20 with 10,000 shares outstanding. So what is the market capitalization of Company A?
Company A has a share price of $20 with 10,000 shares outstanding. So what is the market capitalization of Company A?
The meeting room is so small that it can hold 20 people ( ). A: at last B: at once C: at most
The meeting room is so small that it can hold 20 people ( ). A: at last B: at once C: at most
The meeting room is so small that it can hold 20 people ____. A: at least B: at first C: at most D: at once
The meeting room is so small that it can hold 20 people ____. A: at least B: at first C: at most D: at once
青书学堂: (单选题) The old couple married on 20 May 1964, and so every year they have a party on their ________.(本题1.0分)
青书学堂: (单选题) The old couple married on 20 May 1964, and so every year they have a party on their ________.(本题1.0分)