A tornado usually lasts about 30 seconds.
举一反三
- How long is the appropriate time for eye contact with the interviewer？ A: about 20 seconds. B: about 30 seconds. C: about 10 seconds. D: about 5 seconds.
- 确保两次启动之间的时间至少间隔 30 秒。 A: Make sure that the time between starts is a minimum of 30 seconds. B: Check that 30 seconds have elapsed between starts. C: Check that 30 seconds have timed between starts.
- When the tornado touches the ground, it does ___________________. It usually touches the ground for only about _______________, and it usually travels along the ground for only about ________________, but during that one minute, buildings are __________, trees are ____________ out of the ground, small objects are ________________, and sometimes people are ___________or _________.
- It was about 30 seconds before Alex ________ from the water. we are quite scared。
- 17e0c472232d984.jpgIt was about 30 seconds before Alex __________from the water; we werequite scared.