WhatisthedefaultvalueoftheIS-ISlsp-refresh-intervalcommand?（） A: 60seconds B: 5minutes C: 15minutes D: 30minutes

According to the report, we have about 60 seconds to ________ of our audience when we speak.

Endotracheal aspiration should be limited to :() A: within 2 seconds B: within 5 seconds C: within 10 seconds D: within 20 seconds E: within 30 seconds

There are sixty seconds in a ______.

Only a minute amount is needed. What does minute mean in this context? A: any very short period of time B: very small C: 60 seconds D: precise or detailed

Most of the information kept in short-term memory will be stored for approximately 20 to 30 seconds, but it can be just seconds if rehearsal of the information is prevented.

Over ______ of the articles on education have been published。 A: two thirds B: two third C: seconds three D: seconds third

For Americans， two or three seconds of silence can be comfortable.（ ）

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation. How long is the registration for the orientation meeting A: 15 minutes. B: 30 minutes. C: 45 minutes. D: 60 minutes.

There are _______ seconds in a minute. A: fourty B: forty C: sixteen D: sixty