阅读理解。根据短文内容，判断正（T）误（F）。
Swimming is very popular in summer. People like swimming in summer
because water makes them feel cool.If you swim in a wrong place,it may not be
safe.These years,more than ten people died in this city while they were enjoying
in the water and most of them were students. But some people are still not
careful in swimming.They often think they swim so well that nothing can happen
to them in water. Summer is here again. If you go swimming, don't forget that
better swimmers have died in water. They died because they were not careful,no
t because they were not good at swimming. So don't get into water when you are
alone. If there is a"No Swimming" sign,don't get into water,either.If you
remember all this,swimming will be safer.
( )1. Swimming is a very safe sport.
( )2. We shouldn't swim in some wrong places.
( )3. Only students die in water.
( )4. If you are good at swimming,you will not die in water.
( )5. If we often practice swimming,we will be safer.