24.You must be hungry. Shall we get something to eat?

We provide you, for example, 24/7 technical support.本句中的24/7指的是？

It _________ as you go south, about 12°C - 24°C.

If you have 20 pages to be typed, how long does it take to get them finished A: More than 48 hours B: More than 24 hours. C: Within 24 hours. D: In 24 minutes.

Thank you for your letter of 24 June and I am pleased to ______ my participation in this year’s conference.

If you don’t cancel an appointment with your doctor 24 hours ahead of the schedule, it will affect your credit.

You are managing a 24*7 database. The backup strategy for the database is to perform user-managed backups. Identify two prerequisites to perform the backups.（）

You can process a refund either after the return arrives or immediately if you plan a returnless refund on an item with its value lower than the return shipping cost. Once you received a return, you are expected to issue a refund to the buyer within 24 hours; otherwise, Amazon might refund the buyer and charge the amount to your seller account. ( )

Questions 23 to 24 are based on the following news.At the end of the news, you will be given 10 seconds to answer the questions. Now listen to the news. How many hours have the fires lasted for A: 48 hours. B: 72 hours. C: 24 hours. D: 96 hours.

中国大学MOOC: According to CAAC’s regulation, if you ask for a refund of your ticket 24 hours before the departure time, the cancellation fee is _________of the original fare..