通常情况下，消防应急照明和疏散指示系统的应急转换时间不应大于（）s。 A.0.25

March 25 is the 17th National Day of Education on the Safety of Elementary and Middle School Students. The theme (主题)of the day this year is to give students more knowledge about how to keep safe.
How can you keep yourselves safe? Here are some suggestions.
When there is a fire: Shout out “Fire”! Call 119! Try to find a safe exit(出口) and get away quickly. Don’t use a lift. Use a piece of cloth to cover your mouth and nose.
When there is an earthquake at school: Stay calm. Follow the teachers’ instructions. Quickly move under the desk. Don’t jump out of windows or run out.
When you are on the street: Wait for the green traffic light. Look left and right before crossing the street. Don’t run across the street.
When you are eating: Wash fruits and vegetables carefully before eating them. Check the expiration dates(保质期) of the food. Don’t eat the food if it looks or smells bad.
When you are at school: Take care not to fall down or hurt yourself. Don’t run，jump or push while going upstairs or downstairs. Take care of yourself all the time.

Suggestions on      小题1:
Situations	What you should do	What you shouldn’t do
Be on fire	Shout out “fire”!    小题2:   ! Find a safe exit. Get away quickly. Use a piece of cloth to cover your mouth and nose.	Take a lift.
Have an earthquake	Stay calm. Follow the teachers’ instructions.   小题3:    .	Jump out of windows. Run out.
Be on the street	Wait for the green traffic light. Look left and right before crossing the street.	小题4:      .
While eating	Wash fruits and vegetables carefully. Check the expiration dates.	Eat bad food.
While at school	小题5:    at any time.	Jump, run or push while going upstairs or downstairs.