6.

I always say that Chinese New Year is a time for the three Fs:family,friends and fireworks.The first two I don't have a problem with (naturally).But the third one is more dangerous sometimes.I'd like to give you some advice about how to protect ourselves against fireworks.
Never use fire in order to read instructions of the fireworks.Use a flashlight instead.
Do not wear any loose(宽松的)clothing as they can easily catch fire.
Do not try to set off fireworks from your balcony(阳台) or parking lot.Find out an open space that is away from dry trees,grass to play in instead.
Always keep some water nearby.It's always better to be prepared.If a firework fails to go off,do not check it out.Instead,stand a few meters away and quickly wet it with water.
Do not set off firework after drinking.
If there are people setting off fireworks nearby,be sure to stand far enough.The further away you are,the better.
48.We should set off fireworksB.
A.on the balcony
B.in an open apace
C.under a tree
D.in a parking lot
49.When a firework fails to go off,you shouldA.
A.wet it with water
B.set it off again
C.check it out
D.put it away
50.The best title for this passage isD.
A.How to Use Fire Safely.
B.How to Celebrate New Year.
C.How to Make Fireworks.
D.How to Keep Safe from Fireworks.